Psychology 2301 Exam 1

Correct Answer: C

Rationale: Freud's psychosexual stage that occurs between the ages of 3 and 5, including the Oedipal period, is the phallic stage. During this stage, children experience the Oedipus or Electra complex, where they develop unconscious sexual desires for the opposite-sex parent and see the same-sex parent as a rival. The genital stage (Choice A) is the final stage where mature sexual interests emerge, oral (Choice B) and anal stages precede the phallic stage, and latency (Choice D) is a stage following the phallic stage characterized by a focus on developing social and cognitive skills.

Correct Answer: B

Rationale: Common methods used to study genetic influences on behavior include twin studies, adoption studies, and gene mapping. Twin studies help to compare the similarities between identical and fraternal twins to estimate the heritability of a trait. Adoption studies look at the similarities between adopted children and their biological and adoptive parents to determine genetic influences. Gene mapping involves identifying specific genes associated with certain behaviors. Choices A, C, and D are incorrect because genetic influences on behavior are not solely studied through twin studies or family history, and while the understanding of genetic influences may vary, there are established methods to study them.

Correct Answer: A

Rationale: The correct answer is A. Normal human cells have twenty-two chromosome pairs and one pair of sex chromosomes. This adds up to a total of 46 chromosomes. Choice B is incorrect as it mentions twenty-one trisomy chromosome pairs, which is not a characteristic of normal human cells. Choice C is also incorrect as it states twenty-one chromosome pairs and two trisomy chromosome pairs, which is not accurate for normal human cells. Choice D is incorrect as it mentions twenty-three chromosome pairs, which is not the correct number for normal human cells.

Correct Answer: B

Rationale: The correct answer is B: 'Genes play a role in most mental disorders.' This statement is true as genes do play a significant role in the development of various mental disorders. Choice A is incorrect because most behavioral disorders are influenced by a combination of genetic, environmental, and other factors, not exclusively genes. Choice C is incorrect as genes do affect biochemical processes. Choice D is incorrect because the expression of genes in an individual can be influenced by experiences and environmental factors, a concept known as gene-environment interaction.

Correct Answer: D

Rationale: The correct answer is D because high SES as a cause for abnormal behavior is not supported by existing data. Abnormal behavior is often associated with factors like stress, trauma, genetics, or environmental influences. High SES is not a known cause of abnormal behavior. Choices A, B, and C are more plausible explanations: Low SES may lead to limited access to mental health care, untreated abnormal behavior due to financial constraints, and difficulties in coping with mental health issues after job loss, respectively.