what neurotransmitter was first believed to be the cause of schizophrenia
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Exam 4 Psychology 101

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

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.

2. What are the potential effects of childhood trauma on adult behavior?

Correct answer: B

Rationale: Childhood trauma can have profound and lasting effects on behavior and mental health in adulthood. It can lead to various issues such as anxiety, depression, PTSD, and difficulties in forming relationships. Choice A is incorrect because childhood trauma doesn't automatically disappear with age. Choice C is incorrect as research shows that childhood trauma can significantly impact adult behavior. Choice D is incorrect as overcoming childhood trauma is usually a complex and challenging process that may require therapy and support.

3. Down syndrome is caused by ________.

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.

4. You are taking part in a survey that asks about your attitudes toward physical punishment of children. Even though you believe that spanking is sometimes necessary, you answer that you are opposed to any sort of physical punishment. Which of the following terms best describes why you answered the way you did?

Correct answer: D

Rationale: The correct answer is D, social desirability. Social desirability bias occurs when respondents answer questions in a way they think will be viewed favorably by others, rather than according to their true beliefs. In this scenario, the respondent may feel pressured to provide an answer that aligns with societal norms or expectations, even if it contradicts their personal beliefs. Choices A, B, and C are incorrect. Random responding refers to answering survey questions haphazardly, without consideration. Faking bad is intentionally providing extreme or negative responses. The placebo effect is a phenomenon where a person's belief in a treatment's effectiveness produces a positive outcome, unrelated to the treatment's actual effects.

5. Which term describes the conditions that guarantee the occurrence of a disorder?

Correct answer: C

Rationale: The correct answer is 'Sufficient causes.' Sufficient causes are conditions that alone are enough to guarantee the occurrence of a disorder. Necessary causes refer to factors that must be present for the disorder to occur but are not enough on their own. Contributory causes increase the likelihood of a disorder but are not enough to cause it by themselves. Protective factors are conditions that reduce the likelihood of a disorder occurring.

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