Jerome Kagan's longitudinal research on several hundred Caucasian infants found that about 40 percent of 4-month-old babies
A) were easily upset by novelty.
B) retained their temperamental styles as they got older.
C) were comfortable, even delighted, with new experiences.
D) became more extreme in disposition over time.
C
Psychology
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Which of the following factors influences the rates of MZ twinning?
A) ethnicity B) a history of MZ twins on the mother's side of the family C) maternal age D) The rate of MZ twins is virtually the same in all segments of the population.
Psychology
What is the term that is used to describe young children's thinking in which they are mentally able to change an object's characteristics back to its original form?
a. conservation b. animism c. centration d. reversibility
Psychology