Unit 5: Mental and Physical Health

The biopsychosocial approach to health

Mental and physical health are deeply interconnected. Health psychology starts with a simple but powerful idea: your health is not only “in your body.” The biopsychosocial approach explains health and illness as the combined result of biological factors (genes, brain, immune system), psychological factors (stress, coping, beliefs, emotions), and social-cultural factors (relationships, poverty, discrimination, cultural norms, access to care). This matters because many real-world health problems—chronic pain, heart disease risk, addiction, depression—can’t be fully understood or treated by biology alone.

A useful way to think about the biopsychosocial model is as a set of interacting feedback loops. For example, a biological vulnerability (family history of anxiety) can make you more reactive to stress. That psychological stress response can disrupt sleep and raise inflammation (biological changes). Poor sleep may increase irritability and reduce patience, straining relationships (social changes). Social conflict then becomes a new stressor, intensifying the cycle.

A common misconception is that the biopsychosocial approach means “everything matters equally.” In reality, different conditions have different weightings. A bacterial infection is strongly biological, but stress and access to care still influence recovery. A panic disorder is strongly psychological and biological (brain systems, conditioning, cognition), but social context shapes triggers and help-seeking.

Health psychology’s key goals

Health psychology focuses on understanding and improving wellness across multiple levels. Key goals include:

• Understanding how behavior and mental processes affect physical health (e.g., smoking, exercise, stress)
• Preventing illness (changing risky behaviors, increasing protective habits)
• Improving treatment outcomes (adherence to medication, coping during chronic illness)
• Promoting well-being (resilience, social connection, purpose)

Important related terms

• Health: more than the absence of disease; includes physical, mental, and social well-being.
• Illness: the subjective experience of symptoms (how you feel and interpret what’s happening).
• Disease: an objectively measurable biological condition (e.g., tumors, viral infection).

These distinctions matter on exams because questions may ask you to separate biological markers (disease) from self-report and interpretation (illness).

Exam Focus

• Typical question patterns:
  • Identify which part of a scenario is biological vs psychological vs social.
  • Explain how stress or coping could affect a medical condition.
  • Apply the biopsychosocial model to prevention (what interventions would target each level?).
• Common mistakes:
  • Treating “psychological” as “imaginary.” Psychological factors are real causes with biological pathways.
  • Confusing illness with disease (subjective experience vs objective pathology).
  • Ignoring social factors (support, SES, culture) when asked for a full biopsychosocial explanation.

Stress: what it is and how the body responds

Stress is the process by which you perceive and respond to events you appraise as threatening or challenging. Stressors are the events or conditions that trigger this process, but stress itself includes your interpretation and response. Stress activates both physiological and psychological reactions, such as increased heart rate and feelings of tension, which can impact mental and physical health.

Stressors: different kinds of pressure

A stressor is any event or condition that triggers stress. Stressors vary in duration and intensity:

• Catastrophes: large-scale disasters (earthquakes, war, pandemics). They can cause trauma-related symptoms and community-wide strain and may contribute to long-term effects such as PTSD. Coping with catastrophes often requires individual resilience and community support.
• Significant life changes: moving, divorce, serious illness, marriage, or starting a new job. Even “positive” changes can be stressful because they demand adjustment. These events are commonly assessed using tools like the Holmes-Rahe Stress Scale.
• Daily hassles: small but frequent irritants (traffic, deadlines, misplacing items, interpersonal conflicts). Research often finds daily hassles can predict health outcomes well because they accumulate; managing these hassles effectively is key to maintaining overall well-being.

A frequent misconception is that “stress is always bad.” Moderate stress can be motivating and improve performance on some tasks. The bigger risk is chronic stress that stays activated without enough recovery.

Appraisal: why the same event stresses two people differently

According to the cognitive appraisal theory/transactional model of stress and coping proposed by Richard Lazarus (and associated with Lazarus and Folkman), stress depends on cognitive appraisal—how you interpret the situation.

• Primary appraisal: Is this event irrelevant, positive, or stressful (harm, threat, challenge)? This first evaluation shapes the initial emotional response (fear, excitement, indifference).
• Secondary appraisal: Do I have the resources to cope (skills, time, options, support systems)? A positive secondary appraisal can reduce stress; perceiving inadequate resources can heighten it.

This explains why two students facing the same exam can respond differently—one sees challenge, the other sees threat.

The physiology of stress: sympathetic activation and the HPA axis

Your body has coordinated systems for responding to stress.

1) The sympathetic nervous system (SNS)
When you perceive threat, the SNS triggers the “fight-or-flight” response: increased heart rate, respiration, sweating, heightened alertness, and energy mobilization. The adrenal medulla releases epinephrine (adrenaline) and norepinephrine, preparing the body for quick action.

2) The HPA axis (hypothalamus-pituitary-adrenal axis)
The HPA axis is slower but longer-lasting. The hypothalamus signals the pituitary, which signals the adrenal cortex to release cortisol. Cortisol mobilizes energy and influences immune functioning. Short-term cortisol can be adaptive; chronically elevated cortisol contributes to wear-and-tear on the body.

General Adaptation Syndrome (GAS)

Hans Selye’s General Adaptation Syndrome (GAS) describes a typical pattern of physiological response to prolonged stress:

1. Alarm (alarm reaction): initial arousal and fight-or-flight activation (SNS), with stress-hormone release supporting immediate action.
2. Resistance: the body attempts to adapt; it maintains heightened alertness and continues releasing stress hormones while using energy reserves and coping mechanisms.
3. Exhaustion: resources become depleted; resistance breaks down and vulnerability to illness, fatigue, and mental health issues increases.

GAS is useful because it highlights that stress effects change over time. Many health outcomes are most tied to the prolonged resistance and exhaustion phases.

Chronic stress and health risk

Chronic stress is linked to conditions like high blood pressure and heart disease and can weaken or dysregulate immune functioning, increasing susceptibility to illness.

Measuring stress

Psychologists use multiple approaches:

• Self-report scales (perceived stress, daily hassles)
• Physiological measures (heart rate variability, cortisol levels)
• Behavioral indicators (sleep disruption, substance use)

Be cautious when interpreting physiology: high arousal does not tell you which emotion someone feels. Fear, excitement, anger, and even vigorous exercise can look similar in the body.

Exam Focus

• Typical question patterns:
  • Distinguish stressor vs stress (event vs appraisal/response).
  • Apply Lazarus’s primary vs secondary appraisal to explain different reactions.
  • Distinguish SNS vs HPA axis effects in a scenario.
  • Apply GAS stages to a prolonged stress example.
• Common mistakes:
  • Equating the stressor with stress.
  • Saying cortisol is “always bad” (it’s mainly harmful when chronically elevated).
  • Mixing up adrenal medulla (epinephrine) vs adrenal cortex (cortisol).

Stress and physical health: how mind and body connect

The mind-body connection refers to the interplay between mental and physical health: stress, emotions, and mental health conditions can trigger physical responses (like changes in heart rate or immune function), and physical health problems can affect mood and cognition. Stress affects physical health through multiple pathways—behavioral, cardiovascular, immune, and inflammatory. Stress doesn’t typically “cause” a specific disease in a single-step way; it often increases risk and worsens outcomes through several mechanisms.

Behavioral pathways: stress changes what you do

When stressed, people are more likely to:

• sleep less
• exercise less
• eat less nutritiously (or overeat)
• smoke, vape, or use substances
• skip medical appointments

These behavior changes are key mediators linking stress to illness. In AP-style explanations, pairing a physiological pathway with a realistic behavior pathway is often the strongest approach.

Cardiovascular effects and coronary heart disease

Chronic stress can contribute to hypertension and cardiovascular strain. Frequent SNS activation keeps the heart and blood vessels working harder than they should.

Psychology also examines personality patterns linked to cardiac risk. The classic concept is the Type A behavior pattern (competitive, hard-driving, impatient, hostile). Modern research emphasizes that hostility is the most toxic component for heart health, not ambition alone. It’s best described as associated with increased risk, not a direct cause.

Psychoneuroimmunology (PNI): stress and the immune system

Psychoneuroimmunology (PNI) studies how psychological processes (like stress and emotions), the nervous system, and the immune system interact. It highlights a bidirectional relationship: stress can influence immune responses, and physical illness can influence mental well-being.

• Short-term stress can sometimes temporarily boost certain immune defenses.
• Chronic stress is more likely to weaken, impair, or dysregulate immune functioning, increasing susceptibility to illness and slowing healing.

A common overstatement is “stress shuts down the immune system.” A more accurate view is that chronic stress can disrupt immune regulation in ways that raise health risk.

Inflammation and chronic disease risk

Inflammation helps defend the body, but chronic low-grade inflammation is linked to long-term health problems. Stress can contribute to inflammatory processes through hormonal pathways and sleep disruption.

Pain and stress

Stress can intensify pain. Pain is not purely sensory; it is also shaped by attention, emotion, and interpretation. For example, catastrophizing (“this pain means something terrible”) can increase perceived pain and disability.

Psychosomatic patterns and chronic illness

Some physical conditions are influenced or exacerbated by psychological factors, often described as psychosomatic patterns. In addition, chronic illnesses such as diabetes, cancer, and heart disease can significantly affect psychological well-being. The stress of long-term management, physical limitations, and uncertainty can contribute to anxiety, depression, and helplessness.

Chronic illness can also make it harder to adhere to treatment plans (medications, diet, appointments), which can worsen both physical and mental outcomes. Integrated care approaches, where medical providers coordinate with mental health professionals and support systems, help address both the physical and psychological sides of chronic illness.

Exam Focus

• Typical question patterns:
  • Explain a plausible pathway from stress to illness (behavioral + physiological).
  • Identify which component of Type A is most related to cardiac risk (hostility).
  • Apply PNI to a scenario (stress affecting recovery or susceptibility).
  • Explain how chronic illness can affect mental health and treatment adherence.
• Common mistakes:
  • Claiming stress directly “causes” specific diseases without mediators.
  • Treating immune effects as one-directional and absolute.
  • Forgetting behavior changes (sleep, substance use) as key mechanisms.

Coping, resilience, and improving health behaviors

If stress is a process, then coping is the set of tools you use within that process. Coping mechanisms can be adaptive (problem-solving, seeking support) or maladaptive (avoidance, substance use). Developing effective coping skills is essential for reducing stress, enhancing resilience, and promoting overall well-being.

Coping: problem-focused vs emotion-focused

Coping refers to cognitive and behavioral efforts to manage stress.

• Problem-focused coping targets the stressor itself (make a plan, gather information, change study habits). This works best when the situation is controllable.
• Emotion-focused coping targets your emotional response (reappraisal, venting feelings, mindfulness, relaxation techniques, seeking comfort). This is especially useful when the stressor is not controllable (grief, chronic illness).

A misconception is that emotion-focused coping is “weak” or avoidant. Some emotion-focused strategies are unhealthy (denial, substance use), but others (acceptance, cognitive reappraisal) are highly adaptive.

Social support as a health buffer

Social support—emotional care, practical help, and a sense of belonging—reduces stress effects and predicts better health outcomes. It can buffer stress by reducing threat appraisal (“I’m not alone”), encouraging healthy behavior, and improving adherence to treatment. Not all connections are supportive, though; conflictual relationships can increase stress.

Optimism, locus of control, and self-efficacy

Beliefs shape coping and persistence.

• Optimism is the tendency to expect good outcomes and is linked to healthier coping.
• Locus of control: an internal locus means you believe outcomes are influenced by your actions; an external locus means outcomes are mostly due to outside forces.
• Self-efficacy is your belief that you can perform behaviors needed to reach a goal.

Health behavior change: why knowing isn’t enough

Many health problems involve behavior (diet, activity, sleep, substance use). Information alone rarely changes behavior. Effective change usually includes clear goals, environment design (remove cues for unhealthy behavior; add cues for healthy behavior), reinforcement, and social accountability. From a learning perspective, habits are shaped by operant conditioning: behaviors followed by rewards are more likely to repeat.

Example: applying coping and behavior change

Imagine you feel overwhelmed by school stress and start sleeping 5 hours a night.

• Problem-focused coping: create a weekly plan, break tasks into steps, reduce overcommitment.
• Emotion-focused coping: reframe (“I can do one step at a time”), practice relaxation before bed.
• Social support: ask a friend to study together at set times.
• Habit shaping: set a fixed bedtime cue, limit screens, reward yourself for consistency.

Notice how the best plan targets both the stressor (time demands) and the stress response (rumination).

Exam Focus

• Typical question patterns:
  • Identify whether a coping strategy is problem-focused or emotion-focused.
  • Explain how social support can buffer stress-related illness.
  • Apply self-efficacy or locus of control to predict behavior change.
• Common mistakes:
  • Labeling all emotion-focused coping as avoidance.
  • Treating “positive thinking” as sufficient without behavior change.
  • Ignoring environmental cues and reinforcement in habit formation.

Promoting wellness: lifestyle, mindfulness, and positive psychology

Wellness is strengthened by both lifestyle habits and psychological practices. Healthy routines improve mental and physical functioning, while stress-reduction skills can lower strain on body systems.

Lifestyle and health

Healthy habits like regular exercise, a balanced diet, and adequate sleep support both mental and physical health. In addition, mindfulness and relaxation techniques can reduce stress and enhance well-being.

Positive psychology

Positive psychology focuses on promoting happiness and well-being. Common practices include gratitude journaling, fostering optimism, and building social relationships.

Exam Focus

• Typical question patterns:
  • Identify realistic lifestyle-based ways to support mental and physical health (sleep, exercise, diet).
  • Apply mindfulness/relaxation as emotion-focused coping strategies.
  • Connect positive psychology practices (gratitude, relationships) to resilience.
• Common mistakes:
  • Treating wellness strategies as “one-size-fits-all” instead of matching them to the person and context.
  • Assuming positive psychology replaces clinical treatment for severe disorders rather than complementing it.

Psychological disorders: what diagnosis is (and isn’t)

Mental health psychology asks two connected questions: (1) How do we define and classify psychological disorders? (2) How do we explain, predict, and treat them? Psychological disorders are influenced by a combination of genetic, biological, environmental, and social factors.

Defining psychological disorders

A psychological disorder is typically described as a pattern of thoughts, feelings, or behaviors that is deviant (atypical within a culture), distressing, and/or dysfunctional (interferes with daily life). These “3 Ds” are guidelines, not rigid rules. Cultural context matters: what counts as “deviant” depends on norms.

Classification and the DSM

The DSM-5-TR (Diagnostic and Statistical Manual of Mental Disorders) is the major classification system used in the United States. It provides sets of criteria for diagnoses.

Diagnosis aims to improve:

• Reliability: different clinicians reach the same diagnosis.
• Communication: shared labels help professionals coordinate care.
• Research: categories allow studies of treatment outcomes.

A key misconception is that DSM categories are the same thing as causes. A DSM diagnosis describes symptom patterns; it does not automatically explain why the disorder developed.

Labels: usefulness and risks

Diagnostic labels can validate experiences and guide evidence-based treatments, but they also carry risks such as stigma, self-fulfilling prophecies, and overgeneralization.

Culture and mental health

Culture affects which symptoms are considered problematic, how distress is expressed (psychological vs physical complaints), and willingness to seek help.

Exam Focus

• Typical question patterns:
  • Explain why diagnosis focuses on reliability and what that means.
  • Identify benefits and drawbacks of diagnostic labels.
  • Apply the “3 Ds” to decide whether a scenario suggests a disorder.
• Common mistakes:
  • Treating DSM categories as proven biological diseases (some have strong biological components, but not all).
  • Ignoring cultural context when evaluating deviance or dysfunction.
  • Assuming a label predicts a person’s behavior in every situation.

Anxiety, obsessive-compulsive, and trauma-related disorders

These disorders are united by fear, anxiety, and attempts to reduce distress—often in ways that accidentally keep the problem going.

Anxiety disorders: fear that generalizes

Anxiety disorders involve excessive fear or anxiety and related behavioral disturbances that interfere with daily functioning. They can involve physical symptoms such as increased heart rate and muscle tension.

• Generalized anxiety disorder (GAD): persistent, hard-to-control worry across many areas of life; commonly includes fatigue, restlessness, and difficulty concentrating.
• Panic disorder: recurrent panic attacks plus worry about future attacks and/or behavior changes to avoid them. Panic attacks can include racing heart, sweating, dizziness, and feelings of choking.
• Phobias: intense, irrational fear of specific objects or situations that leads to avoidance and impairment. Phobias are often discussed as specific phobias, social phobia (social anxiety disorder), and agoraphobia, depending on the trigger/context.

How anxiety is maintained (learning + cognition)

Anxiety is often maintained by negative reinforcement. Avoidance reduces fear in the short term, which rewards the avoidance behavior. But avoiding prevents new learning (that the feared outcome is unlikely or tolerable), so fear stays strong.

Cognitive factors matter too: people may overestimate danger and underestimate coping ability.

Obsessive-compulsive disorder (OCD)

OCD involves:

• Obsessions: intrusive, unwanted thoughts or urges.
• Compulsions: repetitive behaviors or mental acts performed to reduce anxiety.

Compulsions are maintained by negative reinforcement: doing the ritual lowers anxiety temporarily, increasing the likelihood of repeating it.

A common misconception is that OCD is “just being neat.” Many obsessions involve harm, contamination, or moral fear, and compulsions can include invisible mental rituals.

Trauma- and stressor-related disorders: PTSD

Posttraumatic stress disorder (PTSD) can develop after exposure to traumatic events. Core symptom clusters commonly include:

• intrusive memories/flashbacks
• avoidance of reminders
• negative changes in mood and thinking
• changes in arousal and reactivity (hypervigilance, sleep problems)

PTSD is not simply “being upset after something bad.” It is persistent and significantly impairs functioning.

Example: understanding avoidance loops

A student has panic attacks in crowded hallways. They start leaving class early to avoid crowds. Their anxiety drops immediately (negative reinforcement), so avoidance strengthens. But they never learn that crowds are survivable, so the panic continues.

Exam Focus

• Typical question patterns:
  • Explain how avoidance is negatively reinforced in anxiety disorders.
  • Distinguish panic disorder vs phobia vs GAD from scenario clues.
  • Identify obsessions vs compulsions in OCD vignettes.
  • Recognize social anxiety disorder and agoraphobia as phobia-related patterns.
• Common mistakes:
  • Calling any strong fear a “phobia” without impairment or irrationality.
  • Confusing OCD with perfectionism or neatness.
  • Describing PTSD as a normal short-term stress reaction rather than a lasting disorder.

Depressive and bipolar disorders (and suicide risk)

Mood disorders involve disturbances in emotional state that affect thinking, behavior, and physical functioning.

Major depressive disorder (MDD)

Major depressive disorder involves persistent depressed mood and/or loss of interest or pleasure, along with additional symptoms such as sleep changes, appetite changes, low energy, difficulty concentrating, feelings of worthlessness, or suicidal ideation. Symptoms must persist for at least two weeks for diagnosis.

Depression is not the same as sadness. Sadness is a normal emotion that can come and go with events. Depression is more persistent, more pervasive, and interferes with daily life.

Bipolar disorders

Bipolar disorders include episodes of depression and episodes of elevated mood.

• Mania involves abnormally elevated or irritable mood and increased energy, often with decreased need for sleep, impulsivity, and risky behavior.
• Hypomania is a less severe form of mania (still a noticeable change, but typically less impairing).

Bipolar disorders are often categorized as bipolar I, bipolar II, and cyclothymic disorder, depending on the severity and frequency of mood episodes.

A common misconception is that bipolar disorder means “mood swings in a day.” Clinically, episodes usually last longer than moment-to-moment fluctuations.

Explanations for depression: biological, cognitive, and learned

• Biological factors: genetic risk and neurotransmitter systems are involved.
• Cognitive factors: negative beliefs and interpretations can maintain depressed mood. Aaron Beck emphasized negative schemas (negative views of self, world, and future).
• Learned helplessness: Martin Seligman’s concept that repeated uncontrollable stressors can lead to passive resignation resembling depressive symptoms.

These perspectives can be integrated: biological vulnerability may increase sensitivity to stress; negative thinking patterns can make stress feel hopeless.

Suicide: careful reasoning on exams

AP questions about suicide usually focus on risk factors and warning signs rather than graphic details.

Risk tends to increase with:

• prior attempts
• severe depression or hopelessness
• substance use
• access to lethal means
• social isolation

Protective factors include social support and effective treatment.

Exam Focus

• Typical question patterns:
  • Distinguish MDD vs bipolar disorder using mania/hypomania clues.
  • Apply learned helplessness or cognitive explanations to a scenario.
  • Identify why depression is more than normal sadness.
• Common mistakes:
  • Confusing bipolar disorder with everyday moodiness.
  • Assuming antidepressants are the only treatment (therapy is also evidence-based).
  • Treating a single symptom (like low energy) as sufficient for diagnosis without the broader pattern.

Schizophrenia spectrum and other psychotic disorders

Psychotic disorders involve a loss of contact with reality—through delusions, hallucinations, and disorganized thinking.

Schizophrenia: core features

Schizophrenia is characterized by disturbances in thought, perception, and behavior. Common symptoms include:

• Delusions: false beliefs held despite evidence (e.g., persecution, special powers).
• Hallucinations: false sensory experiences (often auditory, like hearing voices).
• Disorganized speech/thought: incoherent or derailed thinking.
• Disorganized or catatonic behavior.

It is useful to distinguish:

• Positive symptoms (added experiences): hallucinations, delusions.
• Negative symptoms (reductions): flat affect, reduced speech, lack of motivation.

A common misconception is that schizophrenia means “split personality.” That’s incorrect; schizophrenia is not the same as dissociative identity disorder.

Course, impact, and risk factors

Schizophrenia often involves impaired functioning in work, relationships, and self-care. Risk factors include genetic vulnerability and prenatal/early brain development factors. Stress can worsen symptoms (a diathesis-stress style explanation: vulnerability plus stress).

Treatment overview

Schizophrenia and related psychotic disorders are typically treated with a combination of antipsychotic medications and psychotherapy/psychosocial support, aiming to manage symptoms and improve quality of life.

Example: positive vs negative symptoms

A person who hears voices commenting on their behavior is showing a positive symptom (hallucination). A person who shows little facial expression and speaks very little over months is showing negative symptoms.

Exam Focus

• Typical question patterns:
  • Identify hallucinations vs delusions from a vignette.
  • Distinguish positive vs negative symptoms.
  • Correct the misconception that schizophrenia equals “multiple personalities.”
• Common mistakes:
  • Mixing up schizophrenia with dissociative identity disorder.
  • Assuming hallucinations always mean schizophrenia (they can appear in other conditions and contexts).
  • Overemphasizing one symptom without recognizing the broader impairment pattern.

Dissociative and somatic symptom-related disorders

These disorders highlight that psychological distress can alter memory, identity, and bodily experience.

Dissociative disorders

Dissociation involves a disruption in consciousness, memory, identity, or perception.

• Dissociative amnesia: inability to recall important autobiographical information (often related to trauma or stress).
• Dissociative identity disorder (DID): presence of two or more distinct identity states along with memory gaps.

DID is widely misunderstood. On AP-style questions, focus on defining features (identity states and amnesia-like gaps), not sensationalized portrayals.

Somatic symptom and related disorders

Somatic symptom disorders involve physical symptoms that are distressing or disruptive to daily life and may not have a clear medical explanation. The symptoms (pain, fatigue, gastrointestinal problems) are real to the person and often influenced by psychological factors such as stress or anxiety. People may become highly preoccupied with health and frequently seek medical treatment, but traditional medical interventions may not resolve underlying emotional contributors.

• Somatic symptom disorder: distressing physical symptoms plus excessive thoughts/feelings/behaviors related to the symptoms.
• Illness anxiety disorder: high health anxiety with minimal or no somatic symptoms.
• Conversion disorder (functional neurological symptom disorder): neurological-like symptoms (e.g., paralysis) without a neurological explanation.

Treatment often involves psychotherapy—commonly CBT—and stress management techniques to address both symptom experience and contributing psychological processes.

A key misconception is that these symptoms are “faked.” The distress can be real even when symptoms lack a medical explanation.

Exam Focus

• Typical question patterns:
  • Distinguish DID from schizophrenia (identity states vs psychosis).
  • Identify illness anxiety vs somatic symptom disorder.
  • Explain why “not medically explained” is not the same as “pretending.”
• Common mistakes:
  • Treating dissociation as ordinary forgetfulness.
  • Assuming somatic symptom disorders are deliberate lying.
  • Confusing hallucinations (psychosis) with dissociation (memory/identity disruption).

Eating disorders

Eating disorders involve extreme disturbances in eating behaviors, often driven by preoccupation with body image and weight. They can have serious physical and mental health consequences.

Major eating disorders

• Anorexia nervosa: intense fear of gaining weight, leading to extreme restriction of food intake and an unrealistic perception of body weight. People may engage in excessive exercise or purging to avoid weight gain. This can lead to severe malnutrition and serious physical and psychological consequences.
• Bulimia nervosa: episodes of binge eating (large amounts in a short time) followed by compensatory behaviors such as self-induced vomiting, excessive exercise, or fasting. Bulimia can lead to serious health issues, including electrolyte imbalances and gastrointestinal problems.
• Binge-eating disorder: recurrent binge eating with loss of control, without regular purging behaviors afterward. This can lead to weight gain and potential physical health problems and is often linked to emotional distress and feelings of shame or guilt.

Exam Focus

• Typical question patterns:
  • Identify anorexia vs bulimia vs binge-eating disorder from behavioral clues (restriction vs binge/purge vs binge without purging).
  • Explain how body image and weight preoccupation can maintain disordered eating patterns.
• Common mistakes:
  • Assuming all eating disorders involve purging (binge-eating disorder does not).
  • Treating eating disorders as “choices” rather than serious psychological conditions with medical risk.

Personality disorders, antisocial behavior, and stigma

Personality disorders are enduring patterns of inner experience and behavior that deviate from cultural expectations, are inflexible, and cause impairment.

Antisocial personality disorder (ASPD)

Antisocial personality disorder involves a pattern of disregarding others’ rights, deceitfulness, impulsivity, irresponsibility, and lack of remorse. In AP Psychology, ASPD is often connected to behavioral indicators (aggression, rule-breaking), possible biological correlates (e.g., low arousal or reduced fear conditioning discussed in some research), and environmental risk (abuse, inconsistent discipline).

Be careful not to equate ASPD with “criminal.” Not all criminals meet criteria, and not all with ASPD are criminals.

Borderline personality disorder (BPD) (commonly tested)

Borderline personality disorder is often characterized by instability in mood, relationships, and self-image, along with impulsivity. Fear of abandonment and self-harm behaviors may appear.

Stigma and misconceptions

Personality disorders are particularly stigmatized because traits are seen as “who someone is.” A healthier psychological perspective is that these patterns reflect complex development involving temperament, learning history, and environment—and many people improve with treatment.

Exam Focus

• Typical question patterns:
  • Identify ASPD traits in a vignette (lack of remorse, repeated deceit, irresponsibility).
  • Distinguish a personality disorder (enduring pattern) from a temporary state.
  • Explain stigma’s effects on treatment-seeking.
• Common mistakes:
  • Using “psychopath” as a clinical diagnosis (AP usually expects ASPD language).
  • Assuming personality disorders are untreatable.
  • Confusing impulsivity in BPD with mania in bipolar disorder.

Substance use and addiction: learning, reward, and dependence

Substance-related and addictive disorders show how powerful reinforcement and brain reward systems can be. Substance use can involve alcohol, drugs, or nicotine and can lead to changes in brain function and behavior.

Key terms: tolerance, withdrawal, dependence

• Tolerance: needing more of a substance to achieve the same effect.
• Withdrawal: negative physical/psychological effects when substance use stops.
• Dependence: continued use despite significant problems; may involve tolerance and withdrawal.

Why addiction is hard to stop

Addictive substances can strongly reinforce behavior by affecting the brain’s reward pathways, creating a cycle of compulsive use despite harmful consequences.

• Through operant conditioning, immediate rewards (pleasure or relief) increase future use.
• Through negative reinforcement, people may use substances to reduce distress or avoid withdrawal.
• Through classical conditioning, cues (places, people, stress feelings) can trigger cravings.

Stress is an important risk factor because substances can become an emotion-focused coping strategy. Unfortunately, this often worsens stress long-term by creating health, relationship, and academic problems.

Treatment overview

Effective treatment often addresses both psychological and physical aspects of addiction. Common elements include:

• Behavioral therapies to recognize and change patterns of use
• Support groups such as Alcoholics Anonymous (AA)
• Medication in some cases to manage withdrawal or reduce cravings

Example: tolerance vs withdrawal

If someone reports that they need more alcohol than before to feel relaxed, that’s tolerance. If they feel shaky and anxious when they stop drinking, that’s withdrawal.

Exam Focus

• Typical question patterns:
  • Apply tolerance and withdrawal to a vignette.
  • Explain addiction using reinforcement (including negative reinforcement: using to avoid withdrawal).
  • Identify conditioned cues that trigger cravings.
• Common mistakes:
  • Confusing tolerance (needing more) with withdrawal (symptoms when stopping).
  • Explaining addiction as purely “lack of willpower” instead of learning + biology + environment.
  • Ignoring the role of stress and coping in relapse.

Treatment and therapy: how psychological change happens

Treatment is where AP Psychology often asks you to connect theories of behavior and cognition to real interventions and to match a disorder to an evidence-based approach.

The goals of therapy

Psychological treatment aims to reduce symptoms, improve functioning (school/work/relationships), build coping skills, and prevent relapse. Psychotherapy is a therapeutic approach that treats psychological disorders through structured conversations with trained professionals to help people understand and manage thoughts, emotions, and behaviors.

Psychodynamic therapy and psychoanalysis

Psychodynamic therapy (historically rooted in Freud) emphasizes unconscious processes, early experiences, and recurring relationship patterns. Modern psychodynamic approaches are generally more focused and less intensive than classic psychoanalysis.

Psychoanalysis, developed by Sigmund Freud, aims to bring repressed feelings and memories into conscious awareness to gain insight and resolve inner conflicts. Classic techniques include free association, dream analysis, and transference.

Humanistic therapies

Humanistic therapy emphasizes personal growth, self-actualization, and the inherent potential for self-healing. Client-centered therapy (Carl Rogers) highlights empathy, genuineness, active listening, and unconditional positive regard. The therapeutic relationship is considered a key mechanism of change.

Behavior therapies

Behavior therapies apply learning principles.

• Exposure therapy reduces fear by repeatedly confronting the feared stimulus without the expected catastrophe.
• Systematic desensitization pairs relaxation with gradual exposure.
• Aversive conditioning pairs an unwanted behavior with an unpleasant stimulus (used cautiously).
• Token economies reinforce desired behaviors with conditioned reinforcers (tokens) exchangeable for rewards.

A central goal is breaking avoidance cycles and reinforcing healthier behaviors.

Cognitive therapy and cognitive-behavioral therapy (CBT)

Cognitive therapy targets maladaptive thought patterns (distortions). CBT combines cognitive restructuring with behavioral strategies and is typically structured, practical, goal-oriented, and often short-term.

A common CBT sequence:

1. Identify automatic thoughts (“I’m going to fail; I’m worthless”).
2. Evaluate evidence and alternative explanations.
3. Replace with more accurate, helpful thoughts.
4. Practice new behaviors (problem-solving, exposure, activity scheduling).

CBT is widely used for anxiety and depression because these disorders often involve both avoidance and distorted interpretations.

Group and family therapies

• Group therapy provides support, universality (“I’m not alone”), and opportunities to practice social skills.
• Family therapy treats the family system as part of both the problem and the solution, especially when interaction patterns maintain symptoms.

Example: matching therapy to a problem

A teen with a dog phobia avoids parks and friends’ houses. A strong evidence-based match is exposure therapy (often within CBT). The goal is not to “talk them out of fear” but to help the brain relearn safety through new experiences.

Exam Focus

• Typical question patterns:
  • Match therapy type to a scenario (exposure for phobias, CBT for depression/anxiety, client-centered for self-concept).
  • Identify the mechanism (negative reinforcement maintaining avoidance; CBT targeting distortions).
  • Interpret therapist statements (unconditional positive regard vs cognitive reframing).
  • Recognize classic psychoanalysis techniques (free association, dream analysis, transference).
• Common mistakes:
  • Saying “psychoanalysis = hypnosis” (not the same).
  • Treating CBT as only “positive thinking” rather than evidence-based skill building.
  • Forgetting that exposure requires prevention of avoidance/safety behaviors for full effect.

Biomedical treatments and integrated care

Many psychological disorders have biological components, so treatment may include medication or brain-based interventions—often alongside psychotherapy and lifestyle changes.

Psychopharmacology (medications)

Medication categories commonly discussed include:

• Antipsychotic drugs: used primarily for schizophrenia and other psychotic disorders.
• Antidepressant drugs: used for depression and some anxiety disorders.
• Anti-anxiety drugs (anxiolytics): can reduce acute anxiety but may carry dependence risk for certain medications.
• Mood stabilizers: used for bipolar disorder.

AP exams typically emphasize matching broad classes to broad disorder types rather than brand names or molecular details.

Brain stimulation and other medical procedures

Electroconvulsive therapy (ECT) is used in severe cases (often severe depression) when other treatments have not worked. Modern ECT is performed under anesthesia, despite inaccurate media portrayals.

Integrated treatment (biopsychosocial in action)

Many conditions respond best to combined approaches that address symptoms, skills, and environment.

• Depression: CBT + medication can be effective, especially for more severe cases.
• Panic disorder: CBT with exposure is central; medication may help some individuals manage symptoms while learning skills.
• Schizophrenia: medication to reduce psychosis plus psychosocial support to improve functioning.

Integrated care is also essential for chronic medical conditions that affect mental health. Collaboration between healthcare providers, mental health professionals, and support systems helps improve adherence and overall well-being.

A misconception is that medication “cures” a disorder the way antibiotics cure a bacterial infection. Often, medication manages symptoms and reduces relapse risk; long-term coping and functioning may require psychological and social supports.

Exam Focus

• Typical question patterns:
  • Match medication class to disorder type (antipsychotics for schizophrenia; mood stabilizers for bipolar).
  • Explain why combined treatment may be recommended.
  • Identify misconceptions about ECT based on inaccurate media depictions.
  • Explain why integrated care matters for chronic illness + mental health.
• Common mistakes:
  • Assuming medication is always first-line for every disorder.
  • Confusing antipsychotics with antidepressants.
  • Treating biomedical and psychological treatments as competing rather than complementary.

Evaluating treatment effectiveness and ethical issues

AP Psychology emphasizes scientific thinking: treatments should be evaluated with evidence, not anecdotes.

Why people may improve without effective treatment

Improvement after a treatment can occur for reasons other than the treatment itself:

• Spontaneous remission: symptoms improve over time.
• Regression toward the mean: extreme symptoms often become less extreme naturally.
• Placebo effects: expectations produce real perceived (and sometimes physiological) improvement.

This doesn’t mean therapy “doesn’t work.” It means you need controlled research to separate true treatment effects from other reasons for improvement.

How treatments are tested

Evidence-based evaluation often includes randomized controlled trials (treatment vs control), placebo comparisons (for medications), outcome measures over time (including relapse), replication, and meta-analysis.

Ethics in treatment

Ethical therapy requires:

• Informed consent (clients understand risks and alternatives)
• Confidentiality (with legal/ethical limits when safety is at risk)
• Competence (therapists practice within training)
• Appropriate boundaries

Ethics questions often appear as scenarios asking what a therapist should do to protect a client’s rights or safety.

Exam Focus

• Typical question patterns:
  • Explain placebo effects, spontaneous remission, or regression toward the mean.
  • Identify why controlled studies are needed to judge therapy effectiveness.
  • Apply an ethical principle (confidentiality, informed consent) to a vignette.
• Common mistakes:
  • Using a single success story as “proof” a treatment works.
  • Confusing placebo effects with “fake” improvement (placebos can produce real changes).
  • Treating confidentiality as absolute (there are limits related to harm/safety).