___________________ are used by developmental scientists to create hypotheses and identify

variables to be studied.

a. Parental suggestions
b. Educated guesses
c. Theories
d. Opinions

c. Theories

Psychology

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According to the article Old Folks at Home, concerning the ability of older people to perform household tasks, the research study described was at least partially:

(a) a survey (b) an experiment (c) longitudinal (d) a case study

Psychology

The tendency to perform better when in the presence of others is known as

a. social compliance. b. social facilitation. c. indirect obedience. d. conformity.

Psychology