In research, investigators often look for performance to level off, that is to reach a
steady state where there is neither increase nor decrease. This steady state is referred to
as
(a) a paradigmatic state
(b) a dominant response
(c) a hierarchic constancy condition
(d) an asymptote
D
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Which behavior demonstrates the characteristics of Piaget's coordination of secondary circular reactions substage of the sensorimotor period?
A. an infant's independence from her or his parent B. an infant's basic reflexes C. an infant's lack of object permanence D. an infant's skill in anticipating future circumstances
Imagine a graph showing fluid and crystallized intelligence scores as a function of age. Age appears on the x-axis, with increasing age toward the right. One curve portrays fluid intelligence scores; the other, crystallized intelligence scores
Which of the following statements best describes the relationship between the two curves as age increases? a) The two curves converge. b) The two curves remain parallel. c) The curves diverge: the slope of the fluid intelligence curve eventually becomes increasingly negative, whereas the slope of the crystallized intelligence curve does not. d) The curves diverge: the slope of the fluid intelligence curve eventually becomes increasingly negative, whereas the slope of the crystallized intelligence curve eventually becomes positive.
A group of people born during the same period in historical time is a(n) ________
a. cohort b. peer group c. developmental group d. age group
Studies of adolescents' sexual behavior have shown that
A) adolescent boys and girls go through different stages of sexual activity. B) adolescents tend not to engage in sexual activity until the end of puberty. C) adolescents are in a hurry to have sex, so they tend to begin with sexual intercourse and progress to more intimacy-based behaviors later. D) the stages of sexual activity through which adolescents progress have not changed for many years.