Maria is studying the effects of calcium on the development of children. So, she administers varying levels of calcium to two groups of children, one group consisting of children aged five and the other group consisting of children aged ten. She studies the growth rate of these two groups regularly over a period of one year. On the basis of the given evidence, it would be most accurate to say that Maria is using the ________ research.
A. factorial
B. single case experimental
C. longitudinal
D. cross-sectional
Answer: C
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Carl Rogers believed people question themselves and experience negative effects on their self-concept when they receive
a) conditional esteem. b) unconditional esteem. c) conditional positive regard. d) unconditional positive regard.
Stanley Milgram's study of obedience took on a special importance in the wake of ________.
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