why is it particularly useful to study identical twins who were raised in different environments

ATI RN

Psychology 101 Final Exam

1. Why is it particularly useful to study identical twins who were raised in different environments?

A. Differences in brain function can be easily identified.
B. Concordance rates tend to be higher.
C. It is possible that the genetics of twins who have been separated have changed in ways to explain any differences found.
D. It is possible that high concordance rates between identical twins reared together are due to their being treated more similarly than nonidentical twins.

Correct answer: D

Rationale: Studying identical twins raised in different environments allows researchers to understand the impact of genetics versus environmental factors on traits. Choice A is incorrect because differences in brain function can be influenced by a variety of factors and not solely by environmental differences. Choice B is incorrect as concordance rates tend to be higher in identical twins reared together due to shared genetics and environment. Choice C is incorrect because genetics do not change due to being raised in different environments.

2. What is the biopsychosocial model, and why is it important?

A. A model that integrates biological, psychological, and social factors.
B. A model that focuses solely on biological factors.
C. A model that excludes social factors.
D. A model that focuses solely on psychological factors.

Correct answer: A

Rationale: The biopsychosocial model is a model that integrates biological, psychological, and social factors. It is important because it recognizes the interconnectedness of these factors in influencing an individual's mental health. Option B is incorrect because the biopsychosocial model does not focus solely on biological factors. Option C is incorrect as the model does not exclude social factors. Option D is incorrect as the model does not focus solely on psychological factors.

3. What neurotransmitter was first believed to be the cause of schizophrenia?

A. GABA
B. Serotonin
C. Epinephrine
D. Dopamine

Correct answer: D

Rationale: The correct answer is Dopamine. Dopamine was initially thought to be the primary cause of schizophrenia. This neurotransmitter hypothesis was based on the observation that drugs that increase dopamine activity can worsen symptoms of schizophrenia, while drugs that decrease dopamine activity can improve symptoms. Choices A, B, and C are incorrect because GABA, serotonin, and epinephrine were not the neurotransmitters initially believed to be the cause of schizophrenia.

4. Dr. Rice believes that it is not possible to fully understand emotions unless we understand the purpose that the conscious experiences associated with emotions play in survival and adaptation. Dr. Rice's views are most consistent with those of?

A. Edward Titchener.
B. Ivan Pavlov.
C. Carl Rogers.
D. William James.

Correct answer: D

Rationale: Dr. Rice's views align with William James, a functionalist, who emphasized understanding the role emotions play in survival and adaptation. William James and other functionalists believed that emotions have a purpose in helping individuals adapt to their environment. Edward Titchener, known for structuralism, focused on the structure of the mind rather than the purpose of emotions. Ivan Pavlov was a behaviorist known for his work on classical conditioning, which is not directly related to the purpose of emotions. Carl Rogers was a humanistic psychologist who emphasized self-actualization and personal growth, not specifically the purpose of emotions in survival and adaptation.

5. How does the diathesis-stress model explain the onset of mental disorders?

A. Stress alone is sufficient to cause mental disorders.
B. Both genetic vulnerability and environmental stress are needed to trigger a disorder.
C. Only genetic factors cause mental disorders.
D. Environmental stressors alone can cause mental disorders.

Correct answer: B

Rationale: The diathesis-stress model explains that the onset of mental disorders results from the interaction of genetic vulnerability (diathesis) and environmental stress. Choice A is incorrect because stress alone is not sufficient, according to the model. Choice C is incorrect as it oversimplifies by attributing mental disorders solely to genetic factors. Choice D is incorrect because the model emphasizes the joint contribution of genetic predisposition and environmental stress.