which neurotransmitter is reduced in both the manic and the depressive phases of bipolar disorder
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Exam 4 Psychology

1. Which neurotransmitter is reduced in both the manic and depressive phases of bipolar disorder?

Correct answer: D

Rationale: The correct answer is D, Serotonin. Serotonin levels are reduced during both the manic and depressive phases of bipolar disorder. Acetylcholine (choice A) is not typically linked to bipolar disorder. Dopamine (choice B) and norepinephrine (choice C) are more commonly associated with conditions like schizophrenia and depression, respectively, rather than bipolar disorder. Therefore, they are not the neurotransmitters reduced in both manic and depressive phases of bipolar disorder.

2. Nearly all adults who were children living in Saigon when the U.S. armed forces left Vietnam in 1975 report that their lives were changed by those events. This exemplifies which of the following?

Correct answer: C

Rationale: The correct answer is C. This scenario exemplifies a critical period in development. Critical periods are specific times in an individual's life when certain events have a profound impact on their development. In this case, the events surrounding the departure of the U.S. armed forces from Saigon in 1975 had a lasting influence on the children living there at that time. Choices A, B, and D are incorrect. Normative age-graded influence refers to events that are common to people of a particular age group, the social clock relates to the culturally preferred timing of social events, and a sensitive period is a time when an individual is more susceptible to environmental influences but does not result in lifelong consequences as with critical periods.

3. A predisposition toward developing a disorder is termed a __________ .

Correct answer: A

Rationale: A predisposition toward developing a disorder is termed a diathesis. In this context, diathesis refers to an individual's susceptibility or predisposition to developing a disorder. A diathesis is not the same as a risk factor or a sufficient cause. A risk factor is a variable that increases the likelihood of developing a disorder but is not a predisposition itself. A sufficient cause is a factor that can produce the disorder on its own, not just a predisposition.

4. Who founded functionalism?

Correct answer: C

Rationale: William James is credited with founding functionalism, which emphasizes the adaptive purpose of consciousness. John Watson is associated with behaviorism, not functionalism. Sigmund Freud is known for psychoanalysis, and Wilhelm Wundt is considered the founder of modern psychology and structuralism, not functionalism.

5. 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.

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