Professor Grant is studying development of a sense of humor. She collects data from groups of 6-year-olds, 16-year-olds, 26-year-olds, and 46-year-olds. What type of research design is the professor using?
a) cohort design
b) longitudinal design
c) behavior genetics design
d) cross-sectional design
d
Psychology
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Some evidence exists suggesting that rewards may _____ intrinsic motivation
A) reinforce B) not affect C) undermine D) bolster
Psychology
Ten-month-old Nathan has just been told goodbye by his grandparents who are now leaving in their car. Nathan waves bye-bye to them with his left arm. Nathan's attempt to communicate with his grandparents is called a
A. conventional social gesture. B. telegraphic gesture. C. representational gesture. D. symbolic gesture.
Psychology