A study conducted by Ryan and Hemmes (2005) investigated the impact of rewarding college students with points for submitting homework. Their results suggested that overall, course points served as an incentive for submitting homework. However, some individual participants submitted homework even when no points were assigned. Because the researchers used a ________ design, they were able to quickly identify individual differences.
A. single-case
B. developmental
C. control series
D. cross-sectional
Answer: A
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What is the probability of a couple having three children in the following order: girl, girl, girl?
a. .0625 b. .125 c. .25 d. .50
Which question is best addressed with the correlational strategy? a. What is the average number of text messages that a typical adolescent sends in a month?
b. Is there a relationship between the number of text messages that adolescents send each month and the number of pages of leisure reading done by adolescents? c. Does decreasing the number of text messages sent by adolescents cause an increase in number of pages read for leisure? d. Will restricting access to portable devices increase the number of pages read for leisure?
Differences between age groups resulting from environmental events, rather than developmental processes, are referred to as
a. response biases. c. representative samplings. b. cohort effects. d. artificial settings.
Side effects of some drugs used to treat depression may include impaired sexual arousal
Indicate whether the statement is true or false