Which of the following adjectives accurately describes Piaget's theory of cognitive development?
a. Inconsistent
b. Unpredictable
c. Sequential
d. Random
c
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When comparing means in a single-factor multiple group design, which statistical analysis is most appropriate?
a. independent-measures t test b. repeated-measures t test c. single-factor analysis of variance d. chi-square test for independence
On the basis of twin studies and other kinship evidence, researchers estimate that about __________ of the differences in IQ among children can be traced to their genetic makeup
A) a quarter B) a third C) half D) two-thirds
One reason that some adolescents may be unpopular or rejected is that they lack ________ skills?a set of strategies for solving social problems in a way that is satisfactory to oneself and to others
Fill in the blank with the appropriate word.
Why is getting enough sleep particularly important for children?
A. It produces growth hormones. B. It relieves excess anxiety. C. It improves IQ scores. D. It processes daily experience.