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
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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.
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.
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
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)