Correct Answer: A

Rationale: The correct answer is A: Personal distress. In this scenario, the student is experiencing personal distress as he feels sad and lonely, despite being able to function in his daily life. Personal distress is a key criterion for determining abnormality as it signifies significant emotional discomfort. Choices B, C, and D are incorrect as cultural factors, impaired functioning, and violation of societal norms are not the primary factors highlighted in the student's situation.

Correct Answer: D

Rationale: The correct answer is D, Sigmund Freud. Freud's psychoanalytic theory emphasized the impact of unconscious motivations on behavior. Carl Rogers (choice A) is known for person-centered therapy emphasizing self-actualization, Wilhelm Wundt (choice B) is a structuralist in psychology focusing on consciousness, and B.F. Skinner (choice C) is associated with behaviorism and operant conditioning, which do not primarily focus on unconscious motivations.

Correct Answer: A

Rationale: The correct answer is A: 'Orderliness, obstinacy, or messiness.' According to Freud's psychosexual theory, fixation in the anal stage can lead to these characteristics in adulthood. Choice B is incorrect as fixation in the oral stage is associated with issues related to dependency and aggression. Choice C is incorrect as it refers to the Electra complex, which is not related to the anal stage fixation. Choice D is incorrect as it refers to penis envy and the female Oedipus complex, which are not directly related to characteristics of adults fixated in the anal stage.

Correct Answer: D

Rationale: The correct answer is D, Overextension. Overextension happens when children compare objects or experiences based on one characteristic, such as size. Choices A, B, and C are incorrect. Semiotic refers to the study of signs and symbols; Abstraction is the process of thinking about something as a general concept rather than a specific example; Preoperational is a stage in Piaget's theory of cognitive development, not related to comparing gifts based on size.

Correct Answer: B

Rationale: The correct answer is B: Positive symptoms. Positive symptoms in schizophrenia are behaviors or experiences that are added to normal functioning, such as hallucinations and delusions. These symptoms are considered 'positive' because they represent an excess or distortion of normal functions. Choices A, C, and D are incorrect. Flat affect refers to a reduction in emotional expression, negative symptoms involve deficits in normal functioning such as reduced emotional expression or motivation, and catatonia is a state of unresponsiveness.