Abnormal Psychology

Step 1: Understanding the Concept:
The question asks about the classification of Obsessive-Compulsive Disorder (OCD) in the 5th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5).
Step 2: Detailed Explanation:
A major change from the previous edition (DSM-IV-TR) to the DSM-5 was the reclassification of OCD. In the DSM-IV-TR, OCD was categorized under "Anxiety Disorders." However, due to significant evidence suggesting that OCD has unique neurobiological underpinnings and symptom patterns distinct from other anxiety disorders, the DSM-5 created a new, separate chapter for it. This new chapter is titled "Obsessive-Compulsive and Related Disorders." This chapter also includes disorders like Body Dysmorphic Disorder, Hoarding Disorder, and Trichotillomania (hair-pulling disorder).
Step 3: Final Answer:
In DSM-5, OCD is classified in its own category called Obsessive-compulsive and related disorders.

Step 1: Understanding the Concept:
The question asks to identify which of the listed conditions are classified under the "Anxiety Disorders" chapter in the DSM-5.
Step 2: Detailed Explanation:
Let's analyze each option based on DSM-5 classification:

A. Depression: Major Depressive Disorder is the primary diagnosis in the "Depressive Disorders" chapter. It is not an anxiety disorder.
B. Social Phobia: In the DSM-5, this is officially renamed "Social Anxiety Disorder." It is a core diagnosis within the "Anxiety Disorders" chapter.
C. Panic disorder: This is a key diagnosis within the "Anxiety Disorders" chapter, characterized by recurrent, unexpected panic attacks.
D. Generalized anxiety disorder (GAD): This is another primary diagnosis within the "Anxiety Disorders" chapter, characterized by excessive and persistent worry.
Therefore, Social Phobia, Panic disorder, and Generalized anxiety disorder are all part of the anxiety disorders category.
Step 3: Final Answer:
The correct combination is B, C, and D only.

Step 1: Understanding the Concept:
The question asks for the classification of Body Dysmorphic Disorder (BDD) in the DSM-5. BDD is a disorder characterized by a preoccupation with a perceived flaw in one's appearance that is not observable or appears slight to others.
Step 2: Detailed Explanation:
In the previous DSM-IV, Body Dysmorphic Disorder was classified under "Somatoform Disorders" because it involved a preoccupation with the body. However, research increasingly highlighted the strong obsessive-compulsive features of BDD, such as the obsessive thoughts about the perceived defect and compulsive behaviors like mirror checking, skin picking, or excessive grooming. Recognizing this strong overlap, the creators of the DSM-5 moved BDD into the new chapter titled "OCD and related disorders," alongside Obsessive-Compulsive Disorder, Hoarding Disorder, etc.
Step 3: Final Answer:
In DSM-5, Body Dysmorphic Disorder is placed in the chapter for OCD and related disorders.

Step 1: Understanding the Concept:
The question requires matching specific personality disorders with their defining characteristics.
Step 2: Detailed Explanation:

A. Paranoid Personality Disorder: The core feature is a pervasive distrust and suspiciousness of others, such that their motives are interpreted as malevolent. This directly matches I. Suspiciousness and mistrusts of others.
B. Histrionic Personality Disorder: This disorder is characterized by a pattern of excessive emotionality and attention-seeking. Individuals are often theatrical and expressive, which is well-described by III. Self-dramatization.
C. Borderline Personality Disorder: This is defined by a pervasive pattern of instability in interpersonal relationships, self-image, and emotions, as well as marked II. Impulsiveness in areas such as spending, sex, or substance use.
D. Schizotypal Personality Disorder: This disorder involves cognitive or perceptual distortions and eccentricities of behavior. This includes ideas of reference, odd beliefs or magical thinking, and unusual perceptual experiences, which are collectively described as IV. Peculiar thought patterns.
Step 3: Final Answer:
The correct pairings are A-I, B-III, C-II, and D-IV. This corresponds to option (B).

Step 1: Understanding the Concept:
The question asks for the term that defines a false sensory perception. It is crucial to distinguish this from other types of distorted reality testing.
Step 2: Detailed Explanation:
(A) Delusion: This is a disorder of thought content. It is a false, fixed belief that is held despite evidence to the contrary (e.g., believing one is a historical figure). It is not a sensory experience.
(B) Illusion: This is a disorder of perception, but it is a misinterpretation of a real external stimulus. For example, seeing a rope in a dimly lit room and perceiving it as a snake. There is a stimulus present.
(C) Hallucination: This is a disorder of perception that occurs in the absence of any external stimulus. The sensory experience (e.g., hearing voices, seeing things) is generated internally by the brain. This perfectly matches the definition in the question.
(D) Depression: This is a mood disorder characterized by sadness, loss of interest, and other emotional, cognitive, and physical symptoms.
Step 3: Final Answer:
A sensory experience without an external stimulus is a hallucination.