Piaget studied cognitive development mainly by
a. conducting longitudinal research studies.
b. borrowing concepts from psychoanalysis.
c. observing children as they solved problems.
d. observing the interactions between children and their caregivers.
e. observing the behavior of his siblings.
c. observing children as they solved problems.
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The decline in college aptitude test scores during the 1960s and 1970s was due in part to:
a. the increasing academic diversity of students taking these tests. b. the standardization of college aptitude tests on more representative samples of the population. c. the introduction of new and increasingly difficult aptitude test questions. d. today's students' inexperience with standardized tests.
According to Freud, mature romantic relationships are only
possible when an individual has attained the _____ stage of psychosexual development. A) anal B) genital C) oral D) phallic