EPPP: Part 2, Skills Quiz: Diagnostic Formulation
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Diagnostic FormulationQuestion 1 of 18

A 28-year-old client has a well-documented, 6-year history of schizophrenia, characterized by persistent auditory hallucinations and flat affect. For the past five months, he has also met the full symptomatic and duration criteria for a major depressive episode. His records indicate that outside of this current mood episode, and one previous 4-month depressive episode two years ago, he has consistently experienced psychotic symptoms for the entire 6-year duration of his illness.

What is the most accurate diagnostic formulation for this client's presentation?

Schizophrenia, with a co-occurring Major Depressive Disorder.
Major Depressive Disorder with Psychotic Features.
Schizoaffective Disorder, Bipolar Type.
Schizoaffective Disorder, Depressive Type.
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EPPP: Part 2, Skills Quiz

EPPP: Part 2, Skills Quiz: Diagnostic Formulation

Practice Diagnostic Formulation in EPPP: Part 2, Skills 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 Diagnostic Formulation, giving you a quick way to practice the rules, question types, and explanations that matter most for EPPP: Part 2, Skills.

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Question 1

A 28-year-old client has a well-documented, 6-year history of schizophrenia, characterized by persistent auditory hallucinations and flat affect. For the past five months, he has also met the full symptomatic and duration criteria for a major depressive episode. His records indicate that outside of this current mood episode, and one previous 4-month depressive episode two years ago, he has consistently experienced psychotic symptoms for the entire 6-year duration of his illness.

What is the most accurate diagnostic formulation for this client's presentation?

  1. Schizophrenia, with a co-occurring Major Depressive Disorder.
  2. Major Depressive Disorder with Psychotic Features.
  3. Schizoaffective Disorder, Bipolar Type.
  4. Schizoaffective Disorder, Depressive Type. (correct answer)
Explanation: The correct diagnosis is Schizoaffective Disorder, Depressive Type. The essential criterion for Schizoaffective Disorder is an uninterrupted period of illness during which there is a major mood episode (depressive or manic) concurrent with Criterion A of schizophrenia. Crucially, delusions or hallucinations must be present for 2 or more weeks in the absence of a major mood episode during the lifetime duration of the illness. This client meets these criteria, as his psychotic symptoms are persistent even when he is not depressed. Since he only has a history of major depressive episodes, the Depressive Type specifier is appropriate.

Question 2

An 8-year-old boy is evaluated for severe temper outbursts that occur, on average, four times per week. During these outbursts, he screams, throws objects, and is verbally aggressive. Between outbursts, his parents and teacher describe his mood as consistently irritable and angry most of the day, nearly every day. These symptoms have been present for 18 months and are observed in both home and school settings.

Which diagnosis best accounts for this child's symptoms?

  1. Oppositional Defiant Disorder
  2. Disruptive Mood Dysregulation Disorder (correct answer)
  3. Bipolar I Disorder
  4. Intermittent Explosive Disorder
Explanation: The correct diagnosis is Disruptive Mood Dysregulation Disorder (DMDD). The hallmark features of DMDD are present: severe recurrent temper outbursts that are grossly out of proportion in intensity or duration to the situation, occurring frequently (3+ times per week), and a persistently irritable or angry mood between the outbursts that is observable by others. The duration and presence in multiple settings criteria are also met. DMDD cannot be diagnosed alongside ODD, and it takes diagnostic precedence if criteria for both are met.

Question 3

A couple seeks therapy to address escalating arguments and feelings of emotional distance. They report these issues began after a significant financial setback a year ago and have not improved. Neither partner reports symptoms that meet the criteria for a formal mood or anxiety disorder, but they both state the relational problems are causing significant distress and impacting their co-parenting.

Which diagnostic code should the psychologist use to identify the primary focus of clinical attention?

  1. Adjustment Disorder with Depressed Mood
  2. Z63.0 (V61.10) Relationship Distress with Spouse or Intimate Partner (correct answer)
  3. No diagnosis is warranted as this is a relational issue
  4. Z73.89 (V62.89) Other Problem Related to Life Management Difficulty
Explanation: The correct code is Z63.0 (V61.10) Relationship Distress with Spouse or Intimate Partner. This 'Z-code' is used when a pattern of interaction between spouses or partners is associated with clinically significant distress or impairment in functioning, and it becomes a focus of clinical attention. Since neither partner meets criteria for a mental disorder and the problem is explicitly relational, this code accurately captures the reason for seeking treatment. An Adjustment Disorder diagnosis is not appropriate because the problem is defined as relational rather than an individual's maladaptive response to a stressor.

Question 4

A 20-year-old was in a severe car accident two weeks ago. Since the accident, he reports recurrent, intrusive memories of the crash, distressing nightmares about it, and intense physiological reactivity when he hears screeching tires. He has been avoiding driving and feels detached from his friends and family. He also reports persistent irritability and difficulty sleeping. The symptoms cause significant impairment in his ability to attend classes.

What is the most accurate diagnosis at this time?

  1. Posttraumatic Stress Disorder
  2. Acute Stress Disorder (correct answer)
  3. Adjustment Disorder with Anxiety
  4. Unspecified Trauma- and Stressor-Related Disorder
Explanation: The correct diagnosis is Acute Stress Disorder (ASD). The client is experiencing characteristic post-traumatic symptoms (intrusion, avoidance, negative mood, arousal) following a traumatic event. The key diagnostic factor here is the duration. ASD is diagnosed when the duration of the disturbance is from 3 days to 1 month after trauma exposure. Since the symptoms have been present for two weeks, ASD is the appropriate diagnosis. If the symptoms were to persist for more than one month, the diagnosis would be changed to PTSD.

Question 5

A 29-year-old woman is evaluated due to a pattern of behavior that includes impulsivity in spending and sexual encounters, affective instability with intense mood shifts lasting hours, and frantic efforts to avoid perceived abandonment by her partner. She also reports a chronic feeling of emptiness and an unclear sense of self. This pattern has been present since her late teens and has damaged multiple relationships.

This clinical picture is most indicative of which diagnosis?

  1. Histrionic Personality Disorder
  2. Bipolar II Disorder
  3. Borderline Personality Disorder (correct answer)
  4. Dependent Personality Disorder
Explanation: The described symptoms are hallmark features of Borderline Personality Disorder (BPD). The pattern includes frantic efforts to avoid abandonment, unstable and intense interpersonal relationships, identity disturbance, impulsivity, affective instability, chronic feelings of emptiness. While Bipolar II Disorder involves mood shifts, they are distinct episodes of hypomania and depression lasting days to weeks, unlike the rapid, reactive shifts in BPD. HPD and DPD do not typically include the identity disturbance, emptiness, and specific pattern of impulsivity seen here.

Question 6

A 45-year-old man, a military veteran, meets all symptomatic criteria for Posttraumatic Stress Disorder (PTSD) related to combat exposure. He has been experiencing these symptoms for three years. However, he reports that he did not experience any significant symptoms until approximately one year after he returned from his last deployment.

Which specifier is required for this client's PTSD diagnosis?

  1. With dissociative symptoms
  2. With delayed expression (correct answer)
  3. Chronic
  4. Complex
Explanation: The correct specifier is 'With delayed expression.' This specifier is used if the full diagnostic criteria for PTSD are not met until at least 6 months after the traumatic event(s), although some symptoms may appear sooner. Since the client's full symptoms did not manifest until a year after his deployment, this specifier is required. 'Complex PTSD' is a clinically used term but is not a formal DSM-5-TR diagnosis or specifier. 'Chronic' is a course descriptor, but 'With delayed expression' is the required formal specifier.

Question 7

A 30-year-old is hospitalized after intentionally contaminating his own wound to produce a severe infection. His medical history is notable for two dozen prior hospitalizations for a variety of self-induced illnesses. When interviewed, he seems pleased with the medical attention. There is no evidence of external incentives such as financial gain or avoidance of legal responsibilities.

What is the most likely diagnosis?

  1. Malingering
  2. Somatic Symptom Disorder
  3. Factitious Disorder Imposed on Self (correct answer)
  4. Borderline Personality Disorder
Explanation: The most likely diagnosis is Factitious Disorder Imposed on Self. The key features are the intentional falsification of physical or psychological signs or symptoms, or induction of injury or disease, associated with identified deception. The individual presents themself to others as ill or injured. The deceptive behavior is evident even in the absence of obvious external rewards. This distinguishes it from Malingering, where the motivation is an external incentive (e.g., money, avoiding work).

Question 8

A psychologist is evaluating a 10-year-old child for inattention and restlessness. The parents report the child has difficulty sustaining attention in school and at home, is constantly fidgeting, and often loses things. The teacher confirms these observations. The parents also mention the child has several elaborate routines that must be followed exactly, becomes extremely distressed by minor changes, and has an encyclopedic knowledge of train schedules, a topic he discusses at length without regard for listener interest.

In formulating a diagnosis, the psychologist must primarily consider that the child's inattentive symptoms could be a manifestation of which co-occurring condition?

  1. Autism Spectrum Disorder (correct answer)
  2. Oppositional Defiant Disorder
  3. Generalized Anxiety Disorder
  4. Specific Learning Disorder
Explanation: The child's insistence on sameness, extreme distress at changes in routine, and highly restricted, fixated interests (train schedules) are core features of Autism Spectrum Disorder (ASD). In individuals with ASD, apparent inattention may result from focusing on their internal thoughts or restricted interests rather than the task at hand. It is critical to differentiate between inattention due to ADHD and inattention secondary to the core features of ASD, as the two disorders frequently co-occur but require distinct diagnostic consideration.

Question 9

A 19-year-old is seen for an intake appointment, reporting a 4-week history of symptoms that meet the full criteria for a major depressive episode. He is a poor historian and cannot reliably state whether he has had past episodes of elevated or irritable mood. The psychologist plans to gather collateral information from the client's parents next week.

Given the current uncertainty about the client's psychiatric history, what is the most appropriate initial diagnosis?

  1. Major Depressive Disorder, single episode, moderate (provisional) (correct answer)
  2. Unspecified Depressive Disorder
  3. Major Depressive Disorder, single episode, moderate
  4. Persistent Depressive Disorder
Explanation: The most appropriate initial diagnosis is Major Depressive Disorder, single episode, moderate (provisional). The client currently meets the criteria for an MDE. However, because a history of manic or hypomanic episodes cannot be definitively ruled out due to the client being a poor historian, the diagnosis is provisional. The 'provisional' specifier indicates that there is a strong presumption that the full criteria will ultimately be met for the disorder, but not enough information is available to make a firm diagnosis. This is the most precise way to capture the current clinical picture while acknowledging the diagnostic uncertainty.

Question 10

A 48-year-old man reports that for the past 15 years he has experienced an intense, recurrent sexual arousal from observing an unsuspecting person who is naked, in the process of disrobing, or engaging in sexual activity. He reports feeling significant shame and distress about these urges. He has never acted on them due to fear of being caught. His distress over the urges is interfering with his ability to form intimate relationships.

Which of the following is the most accurate diagnosis?

  1. Voyeuristic interest but not Voyeuristic Disorder
  2. Sexual Dysfunction Not Elsewhere Classified
  3. Other Specified Paraphilic Disorder
  4. Voyeuristic Disorder (correct answer)
Explanation: The correct diagnosis is Voyeuristic Disorder. According to DSM-5-TR, a paraphilic disorder can be diagnosed if a paraphilia (an intense and persistent sexual interest other than sexual interest in genital stimulation or preparatory fondling with phenotypically normal, physically mature, consenting human partners) causes clinically significant distress or impairment to the individual, OR has been acted upon with a non-consenting person. In this case, even though the client has not acted on his urges, his voyeuristic interest is causing him clinically significant distress and impairment in his social functioning, thus meeting the criteria for a disorder.

Question 11

A 40-year-old architect is referred for treatment due to problems at work. His supervisor describes him as being so preoccupied with details, rules, and schedules that he frequently misses deadlines. The client confirms this, stating that projects must be 'perfect' before he can submit them. He is devoted to work to the exclusion of leisure activities and is described by colleagues as rigid and stubborn. This pattern is stable and has been present since early adulthood.

This presentation is most consistent with which diagnosis?

  1. Obsessive-Compulsive Personality Disorder (correct answer)
  2. Narcissistic Personality Disorder
  3. Obsessive-Compulsive Disorder
  4. Generalized Anxiety Disorder
Explanation: The diagnosis is Obsessive-Compulsive Personality Disorder (OCPD). The client's presentation is characterized by a pervasive pattern of preoccupation with orderliness, perfectionism, and mental and interpersonal control, at the expense of flexibility, openness, and efficiency. This is ego-syntonic (the client sees his way as the right way) and differs from Obsessive-Compulsive Disorder (OCD), which involves ego-dystonic, intrusive thoughts (obsessions) and repetitive behaviors (compulsions) aimed at reducing anxiety.

Question 12

A 70-year-old woman is brought for an evaluation by her son, who reports she has shown a gradual decline in memory over the past two years. More recently, in the last six months, she has started having vivid, recurrent visual hallucinations of small children playing in her living room. She has also developed motor symptoms consistent with parkinsonism, such as a tremor and slowed movement. Her cognitive abilities tend to fluctuate significantly throughout the day.

This combination of cognitive decline, visual hallucinations, and parkinsonism is most suggestive of which diagnosis?

  1. Major Neurocognitive Disorder due to Alzheimer's Disease
  2. Delirium
  3. Major Neurocognitive Disorder due to Parkinson's Disease
  4. Major Neurocognitive Disorder with Lewy Bodies (correct answer)
Explanation: The correct diagnosis is Major Neurocognitive Disorder with Lewy Bodies. The core diagnostic features include fluctuating cognition, recurrent visual hallucinations that are typically well-formed and detailed, and spontaneous features of parkinsonism. The temporal sequence is also important; in Lewy Body dementia, the cognitive decline often occurs before or concurrently with the motor symptoms. In Parkinson's Disease dementia, the motor symptoms are established for at least a year before cognitive decline begins.

Question 13

A 34-year-old man presents with a six-month history of preoccupation with the fear that he has colon cancer. This fear persists despite multiple negative colonoscopies and reassurance from his gastroenterologist. He reports no significant gastrointestinal symptoms other than occasional, mild stomach upset, which he interprets as evidence of the tumor. He spends at least two hours a day checking his body and researching symptoms online.

Which diagnosis best captures this clinical presentation?

  1. Somatic Symptom Disorder
  2. Delusional Disorder, Somatic Type
  3. Illness Anxiety Disorder (correct answer)
  4. Generalized Anxiety Disorder
Explanation: The diagnosis that best fits is Illness Anxiety Disorder. The core feature is a preoccupation with having or acquiring a serious illness. Somatic symptoms are not present or, if present, are only mild in intensity. The client's mild stomach upset fits this criterion. His preoccupation is clearly excessive and is accompanied by high anxiety and excessive health-related behaviors (checking, researching). The belief is not of delusional intensity, as he continues to seek medical testing, suggesting some doubt.

Question 14

A psychologist evaluates a client who presents with clinically significant depressive symptoms that cause impairment in her work functioning. The client reports a persistently low mood and two other symptoms from the Major Depressive Episode criteria. The symptoms have been present for three weeks. This presentation does not meet the full criteria for Major Depressive Disorder or Persistent Depressive Disorder. The psychologist documents that the reason criteria are not met is the subthreshold number of symptoms.

What is the most precise diagnosis for this presentation?

  1. Unspecified Depressive Disorder
  2. Adjustment Disorder with Depressed Mood
  3. Other Specified Depressive Disorder (correct answer)
  4. Subsyndromal Depression
Explanation: The most precise diagnosis is Other Specified Depressive Disorder. This category is used in situations where the clinician chooses to communicate the specific reason that the presentation does not meet the criteria for any specific depressive disorder. In this case, the psychologist has identified the reason as an insufficient number of symptoms for a major depressive episode. 'Unspecified Depressive Disorder' would be used if the clinician did not specify the reason. 'Subsyndromal Depression' is a descriptive term, not a formal DSM-5-TR diagnosis.

Question 15

A client is diagnosed with a Major Depressive Episode. During the clinical interview, the psychologist notes that for the majority of days in the past two weeks, the client has felt keyed up, has been unusually restless, and has expressed worry that something awful might happen. The client also reports significant difficulty concentrating because of this persistent worry.

What is the most appropriate specifier to add to the diagnosis of Major Depressive Disorder?

  1. With anxious distress (correct answer)
  2. With mixed features
  3. With atypical features
  4. With melancholic features
Explanation: The correct specifier is 'With anxious distress.' This specifier is applied when at least two of the following symptoms are present during a major depressive episode: feeling keyed up or tense, feeling unusually restless, difficulty concentrating because of worry, fear that something awful may happen, and feeling that the individual might lose control. The client's report of feeling keyed up, restless, having difficulty concentrating due to worry, and fearing something awful will happen meets the criteria.

Question 16

A psychologist reviews the intake paperwork for a new client. The client endorsed symptoms consistent with a major depressive episode. On the form's medical history section, the client wrote, 'diagnosed with hypothyroidism 3 months ago, not yet on medication.' The client's primary symptoms are fatigue, depressed mood, weight gain, and difficulty concentrating.

Which diagnostic step is most critical before assigning a diagnosis of Major Depressive Disorder?

  1. Assess for a history of manic or hypomanic episodes to rule out Bipolar Disorder.
  2. Ascertain the presence of an identifiable psychosocial stressor to consider Adjustment Disorder.
  3. Administer a standardized depression inventory to confirm the severity of the symptoms.
  4. Determine if the symptoms are a physiological consequence of the client's untreated hypothyroidism. (correct answer)
Explanation: The most critical step is to determine if the depressive symptoms are attributable to the physiological effects of another medical condition, in this case, untreated hypothyroidism. The symptoms of hypothyroidism (fatigue, depressed mood, weight gain, concentration difficulties) significantly overlap with those of Major Depressive Disorder. A diagnosis of MDD cannot be made if the symptoms are better explained by a medical condition. Therefore, ruling out 'Depressive Disorder Due to Another Medical Condition' is the priority.

Question 17

A 42-year-old client presents with a history of recurrent mood swings. He reports a distinct one-week period six months ago where he felt euphoric, needed only two hours of sleep per night, had racing thoughts, and was exceptionally talkative. During this week, he impulsively bought a sports car he could not afford, leading to significant financial distress and conflict with his spouse. He also reports several 4- to 5-day periods of milder elevated mood and energy, as well as two separate episodes of major depression in the past five years.

Based on this clinical history, which diagnosis is the most accurate formulation?

  1. Bipolar II Disorder
  2. Bipolar I Disorder (correct answer)
  3. Cyclothymic Disorder
  4. Unspecified Bipolar and Related Disorder
Explanation: The correct diagnosis is Bipolar I Disorder. The key diagnostic feature is the presence of at least one lifetime manic episode. The client's one-week period of elevated mood with decreased need for sleep, racing thoughts, and impulsive behavior that caused marked functional impairment (significant financial distress) meets the criteria for a manic episode. The presence of even one manic episode is sufficient for a Bipolar I diagnosis, regardless of any history of hypomanic or major depressive episodes.

Question 18

A 50-year-old client reports a pervasive, lifelong pattern of social and interpersonal deficits marked by acute discomfort with close relationships, as well as cognitive and perceptual distortions and eccentricities of behavior. He describes odd beliefs, such as feeling he can read others' minds, and his speech is often vague and metaphorical. He has few friends and experiences excessive social anxiety that does not diminish with familiarity.

This presentation is most consistent with which personality disorder?

  1. Schizoid Personality Disorder
  2. Avoidant Personality Disorder
  3. Schizotypal Personality Disorder (correct answer)
  4. Paranoid Personality Disorder
Explanation: This presentation is most consistent with Schizotypal Personality Disorder. Key features described include cognitive or perceptual distortions (odd beliefs, magical thinking), eccentric behavior, odd thinking and speech, and a lack of close friends, coupled with acute discomfort in social situations. While Schizoid and Avoidant Personality Disorders involve social isolation, they lack the prominent cognitive and perceptual distortions characteristic of Schizotypal Personality Disorder.