A very important aspect of representative samples is that their members are
a. chosen by random selection.
b. chosen on the basis of central tendency.
c. chosen on the basis of equal variability.
d. significant members of the population.
ANSWER: a
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In Piaget’s theory, pretend play is possible due to _____
a. symbolic representation b. conservation principle c. animism d. focus on appearances
Marcelia has been promoted and is moving her family to a new city in a different part of the country. Though four-year-old Fernando is very happy and makes the transition easily, 12-year-old Jorge is unhappy and has a very difficult time adjusting to the move. Both children generally adapt well to change. Which single set of factors best explains the different responses of Fernando and Jorge to
the move? a. Biological factors b. Sociocultural factors c. Personality factors d. Life-cycle factors