Down syndrome is caused by ________

Correct Answer: D

Rationale: Down syndrome is caused by possessing an extra chromosome in chromosome 21, not a chemical imbalance (choice A), a gene on the X chromosome (choice B), or possessing an extra X chromosome (choice C). The presence of an extra copy of chromosome 21, also known as trisomy 21, leads to the characteristic features and health problems associated with Down syndrome.

Correct Answer: D

Rationale: Castration anxiety is a concept specific to the Phallic stage in psychoanalytic theory, according to Sigmund Freud. During the Phallic stage, children experience the Oedipus complex (boys) and Electra complex (girls), where they develop unconscious desires for the opposite-sex parent and fear castration by the same-sex parent. This anxiety is a crucial aspect of the Phallic stage, making it the correct answer. The other stages (Genital, Oral, and Anal) do not directly involve castration anxiety and focus on different aspects of psychosexual development.

Correct Answer: D

Rationale: Down syndrome is caused by possessing an extra chromosome in chromosome 21, not by a chemical imbalance (choice A), a gene on the X chromosome (choice B), or possessing an extra X chromosome (choice C). The presence of an additional chromosome 21 disrupts the normal course of development and leads to the characteristics associated with Down syndrome.

Correct Answer: A

Rationale: In Japanese culture, a securely attached child is described as dependent and emotionally restrained. This means that the child relies on their caregiver for support and is able to control their emotions, expressing their feelings in a more subtle and indirect manner. Choice B is incorrect as it describes independence, which is not characteristic of a securely attached child in Japanese culture. Choice C is also incorrect as it describes emotional lability and expressing feelings aggressively, which are not typical of securely attached children. Choice D is incorrect as it combines independence with emotional restraint, which does not align with the characteristics of a securely attached child in Japanese culture.

Correct Answer: C

Rationale: Freud's psychosexual stage that occurs between the ages of 3 and 5 is the phallic stage. During this stage, children focus on the genitals and start to identify with the same-sex parent while developing the superego. Choice A, the oral stage, occurs during infancy (0-1 year), where gratification is centered around the mouth. Choice B, the anal stage, occurs between the ages of 1 and 3, focusing on toilet training. Choice D, the genital stage, is the final stage in Freud's theory, occurring from puberty onwards, where the focus is on mature sexual relationships.