Depression is related to
a. the brain neurotransmitters dopamine, norepinephrine, and serotonin.
b. a genetic predisposition.
c. low brain wave activity of the left frontal lobe.
d. a viral infection.
e. All of the above are correct.
e. All of the above are correct.
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A researcher tries to make sure that subjects in the experimental and control groups are very similar to each other in order to reduce the effects of
a. extraneous variables. b. random variables. c. dependent variables. d. independent variables.
Young children are scolded for being selfish but when they are adults they are expected to be assertive and self- reliant. This is an example of
a. cultural conservatism. b. cultural discontinuity. c. worldview. d. cultural continuity.
For a long time, Bob regularly approached his boss to offer what he thought were useful suggestions regarding ways to improve the department in which he worked. However, Bob’s boss always ignored him and Bob eventually stopped offering suggestions. One day, Bob’s boss moved to a new company, and Bob found himself with a new boss. However, Bob continued to never offer any suggestions. Which psychological phenomenon best helps to account for Bob’s behavior?
a. bystander effect b. helplessness c. social anxiety d. self-presentational motivation
Nathan, a researcher, conducts a study to find out the effects of sugar consumption on the activity level of toddlers. He categorizes the participants into two groups with equal number of participants. In a day, the members of the first group consume 50 grams of sugar, whereas the members of the second group consume 40 grams of sugar. After a week, Nathan notices that the members of the first group display more restlessness than the members of the second group do. Which of the following is the independent variable in this study?
A. restlessness of the participants B. sugar consumption by the participants C. the members of the second group D. the members of the first group