MCAT Psychological Social Foundations Quiz: 7a Psychological Disorders Classification
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7a Psychological Disorders ClassificationQuestion 1 of 20

A patient with schizophrenia believes that the characters in a novel she is reading are secretly communicating with her and that their actions in the story are a commentary on her life. This is an example of:

a delusion of grandeur
a delusion of persecution
a delusion of reference
an auditory hallucination
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MCAT Psychological Social Foundations Quiz

MCAT Psychological Social Foundations Quiz: 7a Psychological Disorders Classification

Practice 7a Psychological Disorders Classification in MCAT Psychological Social Foundations with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

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This quiz focuses on 7a Psychological Disorders Classification, giving you a quick way to practice the rules, question types, and explanations that matter most for MCAT Psychological Social Foundations.

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Question 1

A patient with schizophrenia believes that the characters in a novel she is reading are secretly communicating with her and that their actions in the story are a commentary on her life. This is an example of:

  1. a delusion of grandeur
  2. a delusion of persecution
  3. a delusion of reference (correct answer)
  4. an auditory hallucination

Explanation: Delusions of reference involve the belief that ordinary events, objects, or the behavior of others have a particular and unusual meaning specifically for oneself. The patient's belief that a novel's characters are communicating with her fits this definition. Delusions of grandeur (A) involve an exaggerated sense of self-importance. Delusions of persecution (B) involve the belief that one is being harmed or plotted against. An auditory hallucination (D) is a false sensory perception of sound, not a belief system.

Question 2

A combat veteran experiences intrusive memories of a traumatic event, avoids stimuli associated with the event, feels detached from others, and exhibits hypervigilance and an exaggerated startle response. These four clusters of symptoms are indicative of:

  1. Acute Stress Disorder
  2. Post-Traumatic Stress Disorder (correct answer)
  3. Generalized Anxiety Disorder
  4. Dissociative Identity Disorder

Explanation: The question describes the four main symptom clusters of Post-Traumatic Stress Disorder (PTSD): intrusion, avoidance, negative alterations in cognitions and mood, and marked alterations in arousal and reactivity. Acute Stress Disorder (A) has similar symptoms but is diagnosed when the duration is from 3 days to 1 month after the trauma; PTSD is diagnosed if symptoms last longer than a month. GAD (C) and DID (D) have different core features.

Question 3

A 30-year-old man has a history of legal trouble, deceitfulness, impulsivity, and a disregard for the safety of himself and others. He shows a lack of remorse for his actions, such as when he conned an elderly person out of their savings. To be diagnosed with Antisocial Personality Disorder, the DSM-5 requires that the individual:

  1. exhibit a lack of empathy since early childhood.
  2. have evidence of Conduct Disorder with onset before age 15. (correct answer)
  3. experience a concurrent substance use disorder.
  4. be unable to form any long-term social attachments.

Explanation: A specific criterion for the diagnosis of Antisocial Personality Disorder is that the individual must be at least 18 years old and have a history of some symptoms of Conduct Disorder before age 15. This criterion establishes the long-standing, pervasive nature of the disregard for others' rights. While lack of empathy (A) is a feature, and substance use (C) is often comorbid, they are not specific diagnostic requirements in the same way as the history of Conduct Disorder. (D) is an overstatement; some individuals can form attachments, though they are often exploitative.

Question 4

A researcher is studying the etiology of major depressive disorder (MDD). The study investigates how a specific polymorphism in the serotonin transporter gene (5-HTTLPR) interacts with the experience of significant life stressors, such as job loss or bereavement, to predict the onset of MDD. The hypothesis is that individuals with the short allele of the gene are more likely to develop MDD only if they also experience multiple stressful life events.

The serotonin transporter gene mentioned in the passage is most directly related to which etiological theory of depression?

  1. The dopamine hypothesis
  2. The cortisol theory of stress
  3. The monoamine hypothesis (correct answer)
  4. The neuroplasticity theory

Explanation: The monoamine hypothesis of depression suggests that the underlying pathophysiologic basis of depression is a depletion in the levels of the neurotransmitters serotonin, norepinephrine, and/or dopamine in the central nervous system. The serotonin transporter gene (5-HTTLPR) directly affects the function of the serotonin system, making it a key area of investigation within the monoamine hypothesis. The other theories relate to different neurotransmitters (A), hormones (B), or brain processes (D).

Question 5

A patient with no prior history of mental illness is hospitalized after a car accident. For one week following the accident, he experiences delusions, hallucinations, and disorganized speech, but his symptoms fully remit within two weeks. The most appropriate diagnosis would be:

  1. Schizophrenia
  2. Schizophreniform Disorder
  3. Delusional Disorder
  4. Brief Psychotic Disorder (correct answer)

Explanation: Brief Psychotic Disorder is characterized by the presence of one or more psychotic symptoms (delusions, hallucinations, disorganized speech, grossly disorganized behavior) with a duration of at least one day but less than one month, with an eventual full return to premorbid functioning. Schizophreniform Disorder (B) has a duration of 1 to 6 months. Schizophrenia (A) requires symptoms to persist for at least 6 months. Delusional Disorder (C) involves delusions but not the other prominent psychotic symptoms like hallucinations or disorganized speech.

Question 6

A child in elementary school has significant difficulty maintaining focus during lessons, is easily sidetracked by irrelevant stimuli, and frequently fails to complete homework assignments. His teacher notes that he is not disruptive, does not fidget excessively, and remains in his seat. This presentation is most consistent with which form of Attention-Deficit/Hyperactivity Disorder (ADHD)?

  1. Combined presentation
  2. Predominantly hyperactive/impulsive presentation
  3. Predominantly inattentive presentation (correct answer)
  4. ADHD cannot be diagnosed without hyperactivity.

Explanation: ADHD has three presentations. The child's symptoms (difficulty sustaining attention, easily distracted, fails to finish tasks) are all characteristic of inattention. The specific absence of hyperactivity and impulsivity points to the predominantly inattentive presentation. (A) would require symptoms of both inattention and hyperactivity/impulsivity. (B) would involve symptoms like fidgeting, running about, and interrupting others. (D) is incorrect, as hyperactivity is not required for the diagnosis.

Question 7

A 20-year-old college student presents at the campus health center with concerns about her health. For the past year, she has been convinced that she has a serious brain tumor, despite repeated reassurances and negative test results from multiple neurologists. She spends several hours each day researching symptoms online and checking her body for signs of illness. She has no significant physical symptoms, but her anxiety about having a tumor is causing her immense distress and affecting her studies.

Which of the following diagnoses best fits the student's symptoms?

  1. Somatic Symptom Disorder
  2. Illness Anxiety Disorder (correct answer)
  3. Conversion Disorder
  4. Delusional Disorder, somatic type

Explanation: Illness Anxiety Disorder is characterized by a preoccupation with having or acquiring a serious illness, in the absence of significant somatic symptoms. The student's fear of having a brain tumor, excessive health-related behaviors (researching, checking), and high anxiety, despite medical reassurance, are the core features of this disorder. Somatic Symptom Disorder (A) would require the presence of one or more distressing somatic symptoms. Conversion Disorder (C) involves a specific neurological symptom. Delusional Disorder (D) is considered if the belief is held with delusional intensity, but Illness Anxiety Disorder is more specific to this presentation, where the primary feature is anxiety about illness.

Question 8

A manic episode, which is a criterion for Bipolar I Disorder, is characterized by a distinct period of abnormally and persistently elevated, expansive, or irritable mood, and increased goal-directed activity or energy, lasting at least:

  1. 4 consecutive days.
  2. 1 week. (correct answer)
  3. 2 weeks.
  4. 1 month.

Explanation: According to DSM-5 criteria, a full manic episode must last for at least one week and be present most of the day, nearly every day (or any duration if hospitalization is necessary). The 4-day duration (A) is the minimum for a hypomanic episode. The 2-week duration (C) is the minimum for a major depressive episode.

Question 9

A researcher is studying the etiology of major depressive disorder (MDD). The study investigates how a specific polymorphism in the serotonin transporter gene (5-HTTLPR) interacts with the experience of significant life stressors, such as job loss or bereavement, to predict the onset of MDD. The hypothesis is that individuals with the short allele of the gene are more likely to develop MDD only if they also experience multiple stressful life events.

The theoretical framework guiding this research is best described as the:

  1. biomedical model.
  2. diathesis-stress model. (correct answer)
  3. sociocultural model.
  4. behavioral model.

Explanation: The diathesis-stress model posits that psychological disorders develop as a result of an interaction between a predisposing vulnerability (the diathesis, in this case, the genetic polymorphism) and a precipitating event or factor (the stress, in this case, life stressors). The study's design, which examines the interaction between a genetic factor and environmental stress, is a direct application of this model. The biomedical model (A) would focus solely on the gene, while the sociocultural (C) or behavioral (D) models would focus on other factors without this specific interactionist perspective.

Question 10

A young woman is described as having unstable interpersonal relationships that alternate between idealization and devaluation. She has a fragile sense of self, chronic feelings of emptiness, and engages in impulsive behaviors like reckless driving and self-harm. This pattern is most indicative of:

  1. Histrionic Personality Disorder
  2. Borderline Personality Disorder (correct answer)
  3. Dependent Personality Disorder
  4. Bipolar II Disorder

Explanation: The described symptoms—unstable relationships (idealization/devaluation), identity disturbance, chronic emptiness, and impulsivity/self-harm—are all hallmark features of Borderline Personality Disorder (BPD). Histrionic PD (A) is more centered on attention-seeking. Dependent PD (C) involves a pervasive need to be taken care of. While BPD involves mood instability, the pattern described is more pervasive and identity-based than the distinct episodes of hypomania and depression seen in Bipolar II Disorder (D).

Question 11

A patient presents with sudden paralysis of her left arm following a highly stressful argument with her spouse. Extensive medical testing reveals no neurological or physical cause for the paralysis. The patient does not seem overly distressed by her symptom. This presentation is most characteristic of:

  1. Somatic Symptom Disorder
  2. Illness Anxiety Disorder
  3. Conversion Disorder (correct answer)
  4. Factitious Disorder

Explanation: Conversion Disorder (Functional Neurological Symptom Disorder) is characterized by one or more symptoms of altered voluntary motor or sensory function, with clinical findings providing evidence of incompatibility between the symptom and recognized neurological or medical conditions. The sudden onset of a neurological symptom (paralysis) after a stressor is a classic presentation. Somatic Symptom Disorder (A) involves excessive thoughts/feelings about somatic symptoms. Illness Anxiety Disorder (B) is a preoccupation with having a serious illness. Factitious Disorder (D) involves the intentional falsification of symptoms for the purpose of assuming the sick role.

Question 12

A patient has been experiencing a depressed mood and at least two other depressive symptoms for most of the day, more days than not, for the past three years. The symptoms, while chronic, have not been severe enough to meet the criteria for a major depressive episode. This condition is best described as:

  1. Major Depressive Disorder, recurrent
  2. Cyclothymic Disorder
  3. Persistent Depressive Disorder (Dysthymia) (correct answer)
  4. Adjustment Disorder with depressed mood

Explanation: Persistent Depressive Disorder (Dysthymia) is characterized by a chronic depressed mood that lasts for at least two years (one year in children/adolescents) and is accompanied by at least two other depressive symptoms. It is less severe but more chronic than Major Depressive Disorder (A). Cyclothymic Disorder (B) involves chronic mood swings with numerous periods of hypomanic and depressive symptoms that do not meet criteria for a full episode. Adjustment Disorder (D) is a response to an identifiable stressor and is time-limited.

Question 13

A 45-year-old accountant is described by his colleagues as exceptionally detail-oriented, rigid, and a perfectionist to the point that it interferes with his ability to complete projects on time. He is devoted to work, often at the expense of leisure activities and friendships. He is reluctant to delegate tasks unless others agree to do things exactly his way. He does not report experiencing intrusive, unwanted thoughts or repetitive, ritualistic behaviors.

Based on the passage, which diagnosis is most consistent with the accountant's behavior?

  1. Obsessive-Compulsive Disorder (OCD)
  2. Obsessive-Compulsive Personality Disorder (OCPD) (correct answer)
  3. Narcissistic Personality Disorder
  4. Generalized Anxiety Disorder

Explanation: The accountant's behavior reflects a pervasive pattern of preoccupation with orderliness, perfectionism, and mental and interpersonal control, at the expense of flexibility, openness, and efficiency. This is the hallmark of Obsessive-Compulsive Personality Disorder (OCPD). The passage specifically notes the absence of intrusive thoughts (obsessions) and ritualistic behaviors (compulsions), which rules out OCD (A). His behavior is not primarily driven by grandiosity (C) or pervasive worry (D).

Question 14

A patient experiences episodes of feeling as though they are an outside observer of their own body and mental processes, as if they are in a dream. During these times, their sense of reality remains intact. These experiences are distressing and interfere with their work. This is most characteristic of:

  1. Depersonalization/Derealization Disorder (correct answer)
  2. Dissociative Amnesia
  3. Schizophrenia, prodromal phase
  4. Brief Psychotic Disorder

Explanation: Depersonalization is defined as experiences of unreality, detachment, or being an outside observer with respect to one's thoughts, feelings, sensations, body, or actions. Derealization is the experience of unreality or detachment with respect to surroundings. The key is that reality testing remains intact, distinguishing it from psychosis (C, D). Dissociative Amnesia (B) involves memory loss, not a sense of detachment.

Question 15

A 45-year-old accountant is described by his colleagues as exceptionally detail-oriented, rigid, and a perfectionist to the point that it interferes with his ability to complete projects on time. He is devoted to work, often at the expense of leisure activities and friendships. He is reluctant to delegate tasks unless others agree to do things exactly his way. He does not report experiencing intrusive, unwanted thoughts or repetitive, ritualistic behaviors.

The accountant's personality traits would be considered ego-syntonic. This means he most likely:

  1. is aware of his problematic behavior and is distressed by it.
  2. perceives his behavior as consistent with his self-image and goals. (correct answer)
  3. experiences his traits as foreign and invasive to his sense of self.
  4. developed these traits as a result of a specific traumatic event.

Explanation: Ego-syntonic refers to instincts or ideas that are acceptable to the self and are compatible with one's values and ways of thinking. Individuals with personality disorders often view their traits as normal and natural parts of themselves. In contrast, ego-dystonic (A, C) refers to thoughts and behaviors (like the obsessions in OCD) that are seen as repugnant, distressing, or inconsistent with one's self-concept. (D) is irrelevant to the definition of ego-syntonic.

Question 16

An individual experiences recurrent, unexpected panic attacks and is persistently fearful of having more attacks. This fear has led them to avoid situations where escape might be difficult, such as crowded malls and public transportation. This clinical presentation is most consistent with:

  1. Generalized Anxiety Disorder
  2. Panic Disorder with Agoraphobia (correct answer)
  3. Social Anxiety Disorder
  4. Specific Phobia, situational type

Explanation: This scenario describes the key features of Panic Disorder (recurrent, unexpected panic attacks and worry about future attacks) combined with Agoraphobia (avoidance of situations where escape might be difficult due to fear of having a panic attack). Generalized Anxiety Disorder (A) involves chronic, pervasive worry not focused on panic attacks. Social Anxiety Disorder (C) involves fear of social scrutiny. A Specific Phobia (D) involves fear of a specific object or situation, but the fear here is driven by the potential for a panic attack, not the situation itself.

Question 17

Which of the following would be considered a negative symptom of schizophrenia?

  1. Auditory hallucinations
  2. Disorganized speech
  3. Delusions of persecution
  4. Flat affect (correct answer)

Explanation: Negative symptoms of schizophrenia represent a deficit or absence of normal behaviors. Flat affect, a reduction in the intensity of emotional expression, is a classic negative symptom. Hallucinations (A), disorganized speech (B), and delusions (C) are all positive symptoms, which represent an excess or distortion of normal functions.

Question 18

Which of the following personality disorders is characterized by a pervasive pattern of grandiosity, a need for admiration, and a lack of empathy?

  1. Histrionic Personality Disorder
  2. Antisocial Personality Disorder
  3. Borderline Personality Disorder
  4. Narcissistic Personality Disorder (correct answer)

Explanation: Narcissistic Personality Disorder is defined by the three core features listed: grandiosity, a need for admiration, and a lack of empathy. Histrionic Personality Disorder (A) is characterized by excessive emotionality and attention-seeking. Antisocial Personality Disorder (B) involves a disregard for and violation of the rights of others. Borderline Personality Disorder (C) is characterized by instability in relationships, self-image, and affects, along with impulsivity.

Question 19

Which of the following best describes the primary function of the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5)?

  1. To provide standardized diagnostic criteria for psychological disorders. (correct answer)
  2. To explain the definitive etiology and pathophysiology of all recognized mental illnesses.
  3. To mandate specific evidence-based treatment protocols for clinicians to follow.
  4. To catalog the prevalence and incidence rates of psychological disorders worldwide.

Explanation: The primary function of the DSM-5 is to provide a common language and standard criteria for the classification of mental disorders. This standardization improves the reliability of diagnoses, which is essential for clinical practice, research, and communication among healthcare professionals. While the DSM-5 may mention etiology (B), treatment options (C), and epidemiological data (D), its core purpose is diagnostic classification.

Question 20

According to the most widely accepted criteria for defining a psychological disorder, which of the following is most essential?

  1. The behavior is statistically rare or deviant from social norms.
  2. The individual's thought patterns are irrational and illogical.
  3. The behavior or mental process causes significant distress or functional impairment. (correct answer)
  4. The condition has a clearly identified biological or genetic cause.

Explanation: The 'three D's' (or sometimes four: deviance, distress, dysfunction, danger) are often used to define psychological disorders. Of these, significant personal distress or impairment in social, occupational, or other important areas of functioning is a key criterion. Statistical deviance (A) alone is not sufficient (e.g., genius is deviant). Irrational thoughts (B) are a feature of some, but not all, disorders. A known biological cause (D) is not required for diagnosis, and for many disorders, the exact cause is unknown.