In research, extraneous variables are problematic because they threaten a study's

a. internal validity.
b. external validity.
c. reliability.
d. potential for making a profit.


a

Psychology

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Ethan seemed to spend most of his time when he was at home with his brother, Harris. Ethan and Harris were only a year apart in age. In middle childhood, siblings generally spend ________ time together than they do with parents or peers

Fill in the blank with correct word.

Psychology

The study by Hartshorne and May found that

a. there is a general trait for honesty, lying, and/or cheating. b. moral behavior is situationally specific. c. honesty, lying, and/or cheating reflects an individual's overall level of moral character. d. children who lie or cheat in one situation will likely do so in another situation.

Psychology

A child who is left-handed _________________________

a. likely first developed this tendency during the preschool years b. is often praised for their uniqueness in non-Western cultures c. will be more likely to learn to be right handed in an Asian or African culture than in the United States d. will always have a left-handed twin if they are monozygotic (MZ) twins

Psychology

In which historical period did specialized courses in motor learning and control first become part of American colleges and universities?

A. Pre-Scientific Period (1800-c.1870) B. Early Period (c.1870-1939) C. Middle Period (1939-c.1980s) D. Modern Period (c.1980s-present)

Psychology