How do researchers ensure that groups of participants are equal before they begin an experiment?

a) They randomly assign participants to groups.
b) They measure the dependent variable repeatedly.
c) They use independent variables that are correlated with extraneous variables.
d) They assign participants who have identified themselves as having control of extraneous variables.


ANS: a

Psychology

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Dr. Arantes uses a biopsychosocial framework for understanding human development. Which position is she most likely to endorse on the nature versus nurture issue? a. Nature is most important

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Life-course-persistent offenders:

a. may show signs of neurological impairment. b. have after-school jobs they dislike. c. tend to be involved in school activities. d. are unlikely to end up in prison.

Psychology

Miss Tessier guides the overall process of learning in her classroom, but no other distinction is made between adult and child contributors: All participate in joint endeavors and have the authority to define and resolve problems. Miss Tessier is using a __________ approach to instruction.

A. traditional B. communities of learners C. constructivist D. reciprocal teaching

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How can consistent mindfulness meditation help a person?

A. It can help prevent an unhealthy obsession with negative emotions. B. It can help a person be completely disconnected with his or her emotions. C. It does not have any effect on the levels of catecholamine in the blood. D. It can increase the physiological activation caused by negative emotions.

Psychology