Statistical significance determines whether an observed difference between a treatment and control group is likely due to
A. random assignment.
B. external validity.
C. chance.
D. confounds.
Answer: C
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With each succeeding stage of sleep (from 1 to 4), ____
a. breathing and heart rates increase b. brain activity increases c. slow, large-amplitude waves increase in number d. brain waves become smaller
Adolescents are more likely than adults to report feeling
A. very happy only. B. very sad only. C. both very happy and very sad. D. shamed.
Mike is six years old. He should be able to do all of the following EXCEPT
a. run well. b. ride a two-wheel bike. c. cut accurately with scissors. d. jump and climb. e. skip.
Behavior in which several schemas are combined and coordinated to generate a single act to solve a problem is called __________
a) target-directed behavior b) goal-directed behavior c) center-directed behavior d) focused behavior