Correct Answer: D

Rationale: Disinhibited social engagement disorder is the correct answer because it is characterized by a pattern of behavior involving culturally inappropriate and overly familiar behavior with relative strangers. This disorder is marked by a lack of social boundaries and caution when interacting with unfamiliar individuals. Schizoid personality disorder (Choice A) is characterized by a lack of interest in social relationships, Autism spectrum disorder (Choice B) involves challenges with social interactions and communication, and Reactive attachment disorder (Choice C) is typically associated with difficulty forming emotional bonds with caregivers, not with overly familiar behavior with strangers.

Correct Answer: A

Rationale: The correct answer is 'A: Nature.' In this scenario, the emphasis is on the genetic inheritance of the growth pattern from father to son, highlighting the role of nature in determining physical characteristics. Choice B, 'Nurture,' focuses on environmental influences, which are not the primary factor in this case. Choice C, 'Environmental,' is similar to 'Nurture' and does not address the genetic aspect mentioned. Choice D, 'Experiential,' pertains more to the learning and experiential aspects rather than genetic inheritance, making it an incorrect choice.

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: B

Rationale: Freud's major departure from prevailing viewpoints around the early 1900s was that he viewed people as not fully aware of the forces that control their behavior. This is reflected in his emphasis on unconscious forces influencing behavior. Choice A is incorrect as Freud focused on psychological rather than solely biological causes. Choice C is incorrect as Freud's theory did not emphasize free will but rather unconscious drives. Choice D is incorrect as Freud emphasized internal psychological forces over external environmental factors.

Correct Answer: C

Rationale: Functionalism is the correct answer. Functionalism was an early approach in psychology that emphasized the practical applications of psychological research, laying the groundwork for modern-day applied psychology. Structuralism, focusing on the structure of the mind, and Behaviorism, emphasizing observable behaviors, were more theoretical in nature and did not directly lead to applied psychology. Pragmatism is a philosophical approach and not a specific early psychological theory.