Mood & Psychotic Disorders

🧠 Mood and Psychotic Disorders

Part 1 of 7 — Depressive Disorders

🔑 Key Concept: Depressive disorders are marked by a sad, empty, or irritable mood plus physical and cognitive changes that interfere with a person's ability to function. Ordinary sadness passes and does not shut down daily life; a depressive disorder persists and does.

This lesson covers the disorder categories in AP Psychology Topic 5.4. Parts 1 to 5 move category by category: depressive disorders here, then bipolar disorders, the schizophrenia spectrum, anxiety-related categories, and the remaining categories the course names. Part 6 is research and free-response practice, and Part 7 pulls it all together. (How disorders are defined and classified in general, the DSM, and the big explanatory models are covered in Psychological Disorders Overview.)

The two depressive disorders in AP scope

The course framework names exactly two: major depressive disorder (MDD) and persistent depressive disorder (PDD). Both involve a low or empty mood. They differ mainly in intensity and time course.

Major depressive disorder: the DSM-5-TR pattern

A person meets the criteria for a major depressive episode when five or more of the nine symptoms below are present during the same 2-week period, they represent a change from the person's usual functioning, and at least one of the five is either depressed mood or loss of interest or pleasure.

Three more conditions complete the diagnosis:

1. The symptoms cause clinically significant distress or impairment at school, work, or in relationships.
2. They are not better explained by a substance or a medical condition.
3. The person has never had a manic or hypomanic episode. If they have, the diagnosis belongs in the bipolar category instead (Part 2).

Persistent depressive disorder: lower intensity, longer duration

Persistent depressive disorder is a depressed mood for most of the day, on more days than not, for at least 2 years in adults (at least 1 year in children and adolescents, where the mood can be irritable). During that time the person also has at least two of: poor appetite or overeating, sleeping too little or too much, low energy, low self-esteem, poor concentration or trouble making decisions, and feelings of hopelessness. Over the whole period, symptom-free stretches last no longer than 2 months at a time.

🔑 AP Connection: Exam questions usually give you a short case and ask which disorder fits. Look first at time (2 weeks or 2 years?), then at intensity, then at whether there has ever been mania. Those three clues settle most depressive-versus-bipolar items.

Concept Check — Diagnosing Depressive Disorders 🎯

Possible Causes: Six Sources of Evidence

The course framework says possible causes of depressive disorders come from biological, genetic, social, cultural, behavioral, or cognitive sources. No single source explains every case. On the exam you will be asked to connect a specific piece of evidence to the right kind of cause.

A caution about "chemical imbalance"

You will often hear that depression is "caused by a chemical imbalance." The evidence is more modest. Neurotransmitter differences are correlated with depression, and drugs that change serotonin activity help many people, but neither fact proves that low serotonin is the starting cause. On the AP exam, describe neurotransmitters as a possible biological cause and avoid claiming that one chemical explains the disorder.

Worked case: one person, several sources

Practice case (hypothetical): Aiden, 17, has a parent and an aunt who have both been treated for depression. Last spring his family moved, he lost his close friends, and he was cut from the basketball team. Since then he has been telling himself, "Nothing I do ever works out, and it never will." He stopped going to practice open gyms because "there's no point." For a month he has slept poorly, felt worthless, and lost interest in almost everything.

Step 1: Name the pattern. A month of low mood, loss of interest, poor sleep, and worthlessness with impairment fits a major depressive episode (assuming at least five symptoms and no history of mania).

Step 2: Sort the evidence by source.

• Family history → genetic predisposition.
• The move and loss of friends → social stressors and reduced social support.
• "Nothing I do ever works out, and it never will" → cognitive: an internal, global, stable explanatory style.
• Stopping open gyms because "there's no point" → behavioral: learned helplessness and lost reinforcement.

Step 3: Combine. A predisposition plus stressful events plus a thinking pattern that magnifies them is a stronger explanation than any one factor. In the language of the overview lesson, that is a diathesis-stress account.

🔑 AP Connection: In a free-response answer, "biological factors cause depression" earns little. "Aiden's family history suggests a genetic predisposition, and the stress of the move may have triggered symptoms" connects a specific piece of evidence to a specific concept. That pairing is the skill the exam rewards.

Numbers Worth Knowing ✍️

Type a number for each.

Match the Evidence to Its Source 🔍

Misconceptions and Respectful Language

Person-first language

Psychologists describe a person with depression or a student who has major depressive disorder, not "a depressive." The disorder is something a person has, not who the person is. AP free-response answers that use respectful, precise language also tend to be more accurate, because they keep the focus on symptoms and evidence rather than labels.

Looking ahead

Part 2 adds the missing piece from this part: what changes when a person with depressive episodes has also had periods of mania or hypomania. Treatments for depression, including antidepressants and cognitive therapy, are covered in Treatment and Therapy.

Applied Scenarios — Explaining Depression 🎯

🧠 Mood and Psychotic Disorders

Part 2 of 7 — Bipolar I and Bipolar II Disorders

🔑 Key Concept: Bipolar disorders are characterized by periods of mania (or its milder form, hypomania) and periods of depression. The person cycles between mood states, and each period can last for very different amounts of time. The single most important diagnostic fact: one lifetime manic episode is enough for bipolar I disorder.

What mania is

A manic episode (DSM-5-TR) is a distinct period of abnormally and persistently elevated, expansive, or irritable mood together with persistently increased activity or energy. It lasts at least 1 week and is present most of the day, nearly every day, or it lasts any length of time if the person needs to be hospitalized. During the episode, at least three of the following are present (four if the mood is only irritable):

Mania causes marked impairment at school, work, or in relationships, or requires hospitalization to prevent harm, or includes psychotic features such as grandiose delusions.

Decreased need for sleep is not insomnia. A person with insomnia wants to sleep and cannot, and feels exhausted. A person in a manic episode sleeps 2 to 3 hours and feels energized. This difference is a favorite exam detail.

Hypomania: the same symptoms, less severe

A hypomanic episode has the same kinds of symptoms, lasting at least 4 consecutive days. The change is noticeable to others, but it is not severe enough to cause marked impairment or require hospitalization, and it has no psychotic features. (If psychotic features appear, the episode counts as manic.)

The two bipolar disorders in AP scope

🔑 AP Connection: Name the highest "up" state the person has ever reached. Any manic episode, even once, makes it bipolar I. Hypomania plus a major depressive episode makes it bipolar II. Depression alone, with no mania or hypomania ever, keeps it in the depressive category from Part 1.

Concept Check — Mania, Hypomania, and Diagnosis 🎯

Worked Example: Reading a Mood Timeline

Clinicians often ask a client to reconstruct a mood chart, a timeline of past episodes. On the exam you may see a timeline or a short case history and need to classify it. Work through this one before you check yourself in the next section.

Practice case (hypothetical): Ravi, 24, describes the last three years.

Step 1: Label each "down" period. Year 1 fall and Year 2 winter each last at least 2 weeks with several depressive symptoms and impairment, so each is a major depressive episode.

Step 2: Label each "up" period. Year 2 summer lasts 6 days (at least 4), others notice it, and he keeps functioning without hospitalization. It is a hypomanic episode, not a manic one.

Step 3: Apply the rule. At least one hypomanic episode + at least one major depressive episode + no manic episode ever = bipolar II disorder.

Step 4: Ask what would change the answer. If the summer episode had lasted 10 days and ended with hospitalization, it would be a manic episode and the diagnosis would become bipolar I, no matter how many depressive episodes he had.

Cycling

The framework describes bipolar cycling as alternating periods of depression and mania that can last various amounts of time. Some people have years between episodes, and others cycle several times within a year. (Clinicians use the term rapid cycling when a person has four or more mood episodes within 12 months.) Periods of ordinary mood often separate the episodes, as in Ravi's Year 1 spring and Year 3.

🔑 AP Connection: A timeline question tests two habits: classify each episode by its duration and impairment, then apply the diagnostic rule to the whole history. Avoid diagnosing from the most recent episode alone.

Classify the Episode 🔍

Possible Causes of Bipolar Disorders

As with depressive disorders, the framework lists biological, genetic, social, cultural, behavioral, or cognitive sources. For bipolar disorders the evidence for a genetic contribution is especially strong.

Interaction, not a single cause

Even among identical twins, one twin can have bipolar disorder while the other does not. Genes create a vulnerability; stressors such as sleep disruption and major life events help determine whether and when episodes occur.

Misconceptions

Use person-first language: a person with bipolar I disorder, not "a bipolar."

Duration Rules ✍️

Type a number for each.

Applied Scenarios — Explaining Bipolar Disorders 🎯

🧠 Mood and Psychotic Disorders

Part 3 of 7 — Schizophrenia Spectrum Disorders

🔑 Key Concept: Schizophrenia spectrum disorders involve problems in one or more of five areas: delusions, hallucinations, disorganized thinking or speech, disorganized motor behavior, and negative symptoms. The first three involve a break with shared reality, often called psychosis. The disorder is not a "split personality."

The five symptom areas

What "positive" and "negative" really mean

These words do not mean good and bad.

• Positive symptoms are added to typical experience: something is present that should not be (a voice, a false belief, jumbled speech, frantic movement).
• Negative symptoms are taken away from typical experience: something expected is missing (emotional expression, motivation, speech, movement).

Catatonia is the one area that can go either way. The framework describes catatonic excitement as a positive-symptom manifestation and catatonic stupor as a negative-symptom manifestation.

How schizophrenia is diagnosed (DSM-5-TR)

For a diagnosis of schizophrenia, a person shows two or more of the five symptoms, each for a significant part of a 1-month period, and at least one of them must be delusions, hallucinations, or disorganized speech. Continuous signs of the disturbance last at least 6 months, and functioning in work, relationships, or self-care falls well below its earlier level.

The word spectrum signals that related conditions vary in how many symptoms are present, how severe they are, and how long they last. AP Psychology focuses on schizophrenia itself and its symptom areas. (Schizotypal personality disorder, which shares some odd-thinking features in milder, lasting form, appears with the personality disorders in Part 5.)

Acute and chronic courses

The framework notes that schizophrenia can be experienced as an acute or a chronic condition.

🔑 AP Connection: The exam tests the difference between a delusion (a false belief) and a hallucination (a false perception). Ask whether the person believes something false or senses something that is not there. Someone who hears a voice has a hallucination; someone who is convinced the voice comes from a government implant also has a delusion.

Concept Check — Classifying Symptoms 🎯

Worked Example: Sorting a Case into the Five Areas

Practice case (hypothetical): Over the past eight months, Malik, 21, withdrew from his friends and stopped attending classes. His family says he rarely shows emotion and often sits for hours without starting any activity. For the past six weeks, he has reported hearing two voices arguing about him, and he believes a television host is sending him secret instructions. When asked about his plans, he said, "The bus is late because spoons know the weather, so I stay in the orange."

Step 1: List each symptom and label its area.

Step 2: Check the diagnostic pattern. He shows more than two symptom areas, including hallucinations, a delusion, and disorganized speech, during a 1-month period. Signs of the disturbance (withdrawal, then psychotic symptoms) have continued for 8 months, more than the required 6, and his functioning has declined. The pattern fits schizophrenia.

Step 3: Note the course. The gradual withdrawal before the psychotic symptoms appeared, along with prominent negative symptoms, fits the description of a more chronic course rather than a sudden acute onset.

Step 4: Use respectful language. In a written answer, describe "Malik, a person with schizophrenia," not "a schizophrenic." Describe behaviors precisely instead of using words like "crazy," which are inaccurate and stigmatizing.

Positive or Negative? 🔍

Possible Causes: A Genetic and Biological Link

The framework states that possible causes of schizophrenia suggest a genetic or biological link, such as prenatal virus exposure or imbalances in certain neurotransmitters (the dopamine hypothesis).

1. Genetics

Risk rises with genetic relatedness to a person who has schizophrenia. An identical twin of a person with schizophrenia is far more likely to develop it than a fraternal twin, and adoption studies show that children adopted away from a biological parent with schizophrenia keep an elevated risk. But identical twins are not always concordant: if one twin has schizophrenia, the other often does not. Genes raise vulnerability without determining the outcome.

2. The dopamine hypothesis

The dopamine hypothesis proposes that overactivity in dopamine pathways contributes to the positive symptoms of schizophrenia. Two lines of evidence support it:

Limits: dopamine-blocking drugs help negative symptoms much less, so dopamine alone cannot explain the whole disorder.

3. Prenatal virus exposure

Studies have found slightly elevated risk among people whose mothers had influenza or other infections during pregnancy, and among people born after flu epidemics or in seasons when flu is common. The interpretation is that a virus during fetal development may disrupt brain development. This evidence is mostly correlational, so it shows an association rather than proof of cause.

4. Brain structure

Brain-imaging studies of some people with schizophrenia show enlarged fluid-filled ventricles and less tissue in some cortical areas, as well as lower activity in the frontal lobes, which support planning and judgment.

Putting it together

Many researchers use a diathesis-stress view (from the overview lesson): a genetic or prenatal vulnerability combines with later stressors, often during late adolescence or early adulthood, to produce the disorder.

Misconceptions

Key Terms and Numbers ✍️

Applied Scenarios — Evaluating Causes 🎯

🧠 Mood and Psychotic Disorders

Part 4 of 7 — Anxiety, Obsessive-Compulsive, and Trauma-Related Disorders

🔑 Key Concept: Fear is the response to a present threat; anxiety is apprehension about a possible future threat. Both are normal and useful. Anxiety disorders involve fear or anxiety that is excessive, lasts, and disturbs behavior. Two related categories, obsessive-compulsive disorders and trauma- and stressor-related disorders, also center on anxiety but are classified separately.

The five anxiety disorders in AP scope

DSM-5-TR duration details: worry in GAD occurs more days than not for at least 6 months; specific phobia, social anxiety disorder, and agoraphobia typically last 6 months or more; in panic disorder, at least one attack is followed by at least 1 month of worry or behavior change.

Distinguishing the look-alikes

Agoraphobia and social anxiety disorder are distinct, though a person can have both: in agoraphobia the fear is about being trapped or without help, while in social anxiety disorder it is about being judged.

Culture-bound expressions

The framework names two culture-bound conditions:

• Ataque de nervios, experienced mainly by people of Caribbean or Iberian descent, is linked in the framework to panic disorder. It often follows a stressful family event, such as a death or conflict, and can involve uncontrollable crying or shouting, trembling, a feeling of heat rising, verbal or physical aggression, and sometimes fainting.
• Taijin kyofusho, experienced mainly by Japanese people, is linked to social anxiety disorder. The person fears that their body or appearance is offensive or unpleasing to others. The focus is on offending others, while classic social anxiety focuses on embarrassing oneself.

🔑 AP Connection: The CED's own sample multiple-choice items include a culture-bound case. Remember the pairings: ataque de nervios ↔ panic; taijin kyofusho ↔ social anxiety.

Concept Check — Which Anxiety Disorder? 🎯

Obsessive-Compulsive and Related Disorders

These disorders involve obsessions (intrusive, unwanted thoughts, urges, or images that cause anxiety) and compulsions (repetitive behaviors or mental acts the person feels driven to perform to address the obsessions).

How an obsession and a compulsion connect:

Intrusive thought ("My hands are contaminated") → anxiety rises → compulsion (wash hands) → anxiety drops for a while → the relief makes the compulsion more likely next time.

The person usually recognizes that the thoughts are excessive, which is part of what makes OCD so distressing. Being neat or liking things organized is not OCD; the disorder involves anxiety-driven rituals that consume time and impair life.

Trauma- and Stressor-Related Disorders: PTSD

Posttraumatic stress disorder (PTSD) follows exposure to a traumatic or extremely stressful event, such as combat, assault, a serious accident, or a disaster. The exposure can be direct, as a witness, by learning it happened to someone close, or through repeated exposure to disturbing details (as with first responders).

DSM-5-TR requires that symptoms last more than 1 month and cause significant distress or impairment. People often avoid reminders of the trauma, which keeps the fear from fading.

Not everyone exposed to trauma develops PTSD. Severity of the trauma, earlier traumatic experiences, and low social support raise risk. Some people even report posttraumatic growth (from Topic 5.2) after recovery.

Name the Condition 🔍

Possible Causes: Learning, Thinking, and Biology

The framework groups the possible causes of anxiety disorders and obsessive-compulsive disorders the same way: learned associations among stimuli, maladaptive thinking or emotional responses, and biological or genetic sources. For trauma-related and dissociative disorders, the cause it names is the experience of trauma or stress.

Worked example: how a phobia is learned and kept

Practice case (hypothetical): At age 7, Jonah was knocked down and bitten by a large dog. Now 16, he crosses the street whenever he sees any dog, even a small puppy on a leash.

Step 1: Acquisition by classical conditioning. The dog (neutral stimulus) was paired with the pain and shock of the bite (unconditioned stimulus, producing fear as an unconditioned response). The dog became a conditioned stimulus that now triggers fear (conditioned response).

Step 2: Spread by generalization. Jonah fears all dogs, not just the one that bit him. That is stimulus generalization.

Step 3: Maintenance by negative reinforcement. Each time he crosses the street, his anxiety drops. Removing an unpleasant feeling makes the avoidance more likely next time: negative reinforcement (operant conditioning).

Step 4: Why it does not fade. Because he always avoids dogs, he never experiences a dog without a bite, so extinction never gets a chance to happen. (This is why exposure-based treatments work; see Treatment and Therapy.)

The same negative-reinforcement loop explains why compulsions persist in OCD: the ritual briefly relieves anxiety, so it is strengthened.

Thinking patterns

• Catastrophic misinterpretation: in panic disorder, a racing heart is read as "I'm having a heart attack," which raises fear and makes the heart race faster.
• Overestimating threat and underestimating coping: common in GAD and social anxiety disorder ("Everyone will notice my mistake, and I won't be able to handle it").
• Observational learning: a child who repeatedly watches a parent react with terror to storms can learn the fear without any direct bad experience.

Biology and genetics

• Anxiety disorders run in families, and twin studies show a moderate genetic contribution, often expressed as an anxious, inhibited temperament.
• The amygdala, a limbic structure central to fear, tends to be more reactive in people with anxiety disorders.
• Low activity of GABA, the main inhibitory neurotransmitter, has been linked to anxiety, and drugs that enhance GABA reduce it. Serotonin has been linked to OCD and anxiety, because drugs that affect serotonin often help.
• An evolutionary angle: people acquire fears of heights, snakes, and spiders far more readily than fears of cars or electrical outlets, which suggests a biological preparedness to fear threats that endangered our ancestors.

🔑 AP Connection: For any anxiety-type case, be ready to give one explanation from each of the three sources the framework names. "Learned associations" alone is incomplete if the question asks you to account for why only some people exposed to a frightening event develop a disorder; that is where genetic and biological vulnerability come in.

Key Terms ✍️

Applied Scenarios — Explaining Anxiety-Related Disorders 🎯

🧠 Mood and Psychotic Disorders

Part 5 of 7 — Dissociative, Eating, Personality, and Neurodevelopmental Disorders

🔑 Key Concept: The last four categories in Topic 5.4 differ in when they begin and what they disrupt. Dissociative disorders split off parts of memory or identity, often after trauma. Eating disorders disrupt eating in ways that harm health. Personality disorders are lasting, inflexible patterns that begin by early adulthood. Neurodevelopmental disorders begin in childhood and are judged against what is typical for a person's age.

Dissociative Disorders

Dissociation is a disconnection among things that are normally integrated: consciousness, memory, identity, emotion, perception, body representation, motor control, and behavior. The framework names two dissociative disorders.

Possible causes: the framework links dissociative disorders to the experience of trauma or stress. Many people diagnosed with DID report severe, repeated trauma in childhood, and one interpretation is that dissociation began as a way to escape an inescapable experience. Some researchers argue that cultural expectations and suggestive therapy practices also shape how DID symptoms appear, which is one reason diagnosis rates vary across countries and decades.

DID is not schizophrenia. DID involves separate identities and memory gaps. Schizophrenia involves psychosis (delusions, hallucinations, disorganized speech) and negative symptoms, with one identity.

Feeding and Eating Disorders

Feeding and eating disorders involve altered eating that impairs health or psychological functioning. Two are in AP scope.

Possible causes draw on all the sources the framework lists: genetic (eating disorders run in families and show twin-study heritability), biological (changes in appetite and reward systems), social and cultural (pressure toward a thin ideal, appearance-focused sports and media; rates have risen as Western beauty standards spread), cognitive (perfectionism, all-or-nothing thinking, a distorted body image), and behavioral (in bulimia, purging relieves the guilt and anxiety after a binge, which negatively reinforces the cycle). Eating disorders are diagnosed most often in adolescent girls and young women, but they occur across genders, body sizes, and backgrounds.

Concept Check — Dissociative and Eating Disorders 🎯

Personality Disorders

Everyone has personality traits. A personality disorder is an enduring pattern of inner experience and behavior that:

1. deviates markedly from the expectations of the person's culture,
2. is pervasive and inflexible across many situations,
3. begins in adolescence or early adulthood,
4. is stable over time, and
5. leads to distress or impairment.

This is what separates a personality disorder from an episode-based disorder such as major depression: the pattern is part of how the person usually relates to the world, not a period that comes and goes.

The three clusters

Antisocial personality disorder is diagnosed only in adults (18 or older), with evidence of conduct problems that began before age 15.

Obsessive-compulsive personality disorder (OCPD) is not OCD. OCD involves intrusive obsessions and anxiety-reducing compulsions that the person usually wants to stop. OCPD is a lasting style of rigid perfectionism and control, with no true obsessions or compulsions, which the person often sees as simply "the right way" to do things.

Possible causes (biological, genetic, social, cultural, behavioral, cognitive): personality disorders run in families; antisocial personality disorder has been linked to low physiological arousal (little fear or anxiety response to threats or punishment), reduced frontal lobe activity, and childhood abuse or neglect; borderline personality disorder is often explained as an inborn emotional sensitivity combined with a childhood environment that dismissed or punished emotions. Cultural norms matter by definition, because a pattern counts only if it deviates from the person's own culture.

Neurodevelopmental Disorders

Neurodevelopmental disorders begin during the developmental period, and symptoms are judged by whether a behavior is appropriate for the person's age or maturity.

Possible causes: the framework lists environmental, physiological, or genetic sources. Both disorders are highly heritable in twin studies. Environmental factors include prenatal exposure to alcohol or tobacco and very premature birth. Physiological factors include differences in brain development. Vaccines do not cause autism; the study that claimed a link was retracted, and large studies have found no connection.

Language note: person-first language ("a person with ADHD") is the general standard. Many autistic adults prefer identity-first language ("an autistic person"); respectful practice is to follow the individual's preference.

Sort by Personality Cluster 🔍

Quick Recall ✍️

Applied Scenarios — Telling Patterns Apart 🎯

🧠 Mood and Psychotic Disorders

Part 6 of 7 — Research on Disorders and AP Exam Practice

🔑 Key Concept: Every "possible cause" in Parts 1 to 5 rests on a specific kind of study. Knowing which method produced a finding tells you what the finding can and cannot show. That same skill earns points on both AP free-response questions: the Article Analysis Question (AAQ), which has 6 parts worth 7 points, and the Evidence-Based Question (EBQ), which has 3 parts worth 7 points.

Which method answers which question?

Reading concordance data

Concordance is the percentage of twin pairs in which, when one twin has a disorder, the other twin has it too.

Practice data (hypothetical, for skill practice only):

Disorder	Identical-twin concordance	Fraternal-twin concordance
Disorder X	45%	15%
Disorder Y	30%	25%

How to read it:

1. Compare within a row. For Disorder X, identical twins are concordant three times as often as fraternal twins. Because identical twins share more genes, that gap points to a substantial genetic contribution.
2. Compare the gaps across rows. Disorder Y's gap is small, so genes appear to contribute less, and shared environment may matter more.
3. Notice what is below 100%. Even for Disorder X, more than half of identical pairs are not concordant, so environment must also matter.

Data Check — Interpreting Research on Disorders 🎯

Use the practice concordance table above for the first question.

AAQ Walkthrough

A practice study summary (hypothetical):

Introduction: Researchers hypothesized that dwelling on one's feelings (rumination) increases sad mood more than distraction does, especially among people who already have elevated depressive symptoms.

Participants: 120 undergraduates (ages 18 to 22) from one university in the United States volunteered for course credit. Based on a screening questionnaire, 60 had elevated depressive symptoms and 60 did not.

Method: Within each group, participants were randomly assigned to one of two 8-minute tasks. In the rumination condition, they read prompts asking them to think about their feelings and why they feel the way they do. In the distraction condition, they read prompts asking them to picture neutral scenes, such as a bus driving down a street. Before and after the task, participants rated their sad mood on a scale from 0 (not at all sad) to 100 (extremely sad).

Ethics: All participants gave informed consent and were told they could stop at any time without losing credit. Responses were stored under code numbers rather than names. At the end, participants were debriefed, completed a short positive-mood activity, and received a list of campus counseling resources.

Results:

Group	Rumination: mean change in sad mood	Distraction: mean change in sad mood
Elevated symptoms	+14 points	−6 points
Not elevated	+2 points	−1 point

Discussion: Rumination increased sad mood among participants with elevated symptoms, while distraction decreased it. In the group without elevated symptoms, both tasks produced little change.

The six AAQ tasks, answered

🔑 AP Connection: Each AAQ answer must cite this study. "Results may not generalize because of the sample" earns nothing; "all participants were 18-to-22-year-old volunteers from one university" does. Under the October 2025 clarification, the ethics part asks you to identify a guideline described in the study and describe how the researchers applied it.

Apply the AAQ Skills 🔍

These refer to the practice study summary above.

EBQ Mini Set

Prompt: Develop and justify an argument about whether learning and environmental experience contribute to the development of anxiety disorders.

Source 1 (practice summary, hypothetical): In a longitudinal study, 200 children were observed at ages 4 and 10. Children whose parents frequently showed visible fear of everyday situations (storms, dogs, crowds) were more likely to meet criteria for an anxiety disorder at age 10 than children whose parents rarely showed fear.

Source 2 (practice summary, hypothetical): In a laboratory study, adult volunteers viewed pictures of geometric shapes. One shape was repeatedly followed by a loud, unpleasant noise. After several pairings, participants showed increased skin conductance (a sign of arousal) to that shape alone, and the response spread to similar shapes.

Source 3 (practice summary, hypothetical): A twin study found that identical twins were more often concordant for generalized anxiety disorder than fraternal twins, but fewer than half of identical pairs were concordant.

Part A: a defensible claim

"Learning and environmental experiences contribute to the development of anxiety disorders, although they likely act on a genetic vulnerability."

The claim takes a clear position and can be supported with the sources.

Parts B and C: evidence plus explanation, from different sources

Using Source 3: it can qualify the claim. Higher identical-twin concordance suggests a genetic contribution, but concordance below 50% means environment must matter too, which fits a combined explanation.

🔑 AP Connection: Parts B and C must each cite a different source and use a different psychological concept. Restating the source is not an explanation; the point comes from linking the evidence to a concept and back to the claim.

Exam Practice — Judging Responses 🎯

🧠 Mood and Psychotic Disorders

Part 7 of 7 — Synthesis: Telling Disorders Apart

🔑 Key Concept: Most AP questions about disorders give a short case and ask you to name the disorder, a symptom, or a possible cause. Success comes from asking a few questions in a fixed order instead of matching on a single word.

The whole map of Topic 5.4

A decision sequence for any case

1. Has the person lost contact with reality? Delusions, hallucinations, or disorganized speech without a mood episode → schizophrenia spectrum.
2. Are there mood episodes? Find the highest "up" ever: mania → bipolar I; hypomania plus major depression → bipolar II; depression only → depressive disorder (2 weeks or 2 years?).
3. Is fear or anxiety central? Find its focus: one object, places where escape is hard, unexpected attacks, being judged, or everything.
4. Are there intrusive thoughts with rituals, or trouble discarding? → OCD or hoarding disorder.
5. Did it follow a trauma? Flashbacks and hypervigilance → PTSD; lost memory or identity → dissociative disorder.
6. Is eating the problem? Low weight → anorexia; binge-compensation cycles → bulimia.
7. Is it a lifelong style rather than an episode? → personality disorder; then find the cluster.
8. Did it begin in childhood, judged against age norms? → ADHD or ASD.

Disorders can co-occur (for example, depression with an anxiety disorder), so a case may fit more than one category. On multiple-choice items, choose the option that the specific details support best.

Mixed Review — Name the Disorder 🎯

The Look-Alike Pairs

These pairs account for many wrong answers. For each, one deciding question separates them.

Cross-Category Misconceptions

Language that is accurate and respectful

• Say "a person with schizophrenia," "a student living with bipolar disorder."
• Avoid using disorder names as casual adjectives ("I'm so OCD," "the weather is bipolar"). It trivializes real conditions and spreads misconceptions.
• Avoid slurs such as "crazy" or "psycho." Describe the behavior precisely instead; precise description is also what earns credit on the AP exam.

Pick the Category 🔍

Writing About Causes: One Template for Every Category

When a question asks for a possible cause, match the type of evidence to the type of cause, then connect it to the specific case.

🔑 AP Connection: Treatments for each disorder (antidepressants, lithium, antipsychotics, exposure therapy, cognitive therapy, dialectical behavior therapy, and more) are the subject of Treatment and Therapy. A strong cause statement prepares you for that lesson, because many treatments target the same causes: exposure therapy targets learned fear, cognitive therapy targets maladaptive thoughts, and antipsychotics target dopamine activity.

Integrated Practice — Causes and Evidence 🎯