Which activities demonstrate that infants understand that others have mental states such as intentionality?
a. crying to be picked up
b. joint attention
c. protesting
d. crawling
B. Activities such as joint attention and prelanguage vocalizations demonstrate that infants understand that others have intention and drive as well.
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Family studies, twin studies, and adoption studies are primarily designed to
a. disentangle the effects of genetics and experience on behavioral traits. b. establish the groundwork for genetic engineering programs. c. demonstrate the empirical nature of psychological research. d. assess the effects of modern child-rearing methods.
Yves is currently 8 months old. According to Piaget, Yves would be in the period of cognitive development known as the:
a. sensorimotor period b. preoperational period c. concrete operational period d. formal operational period
According to the work of Hatfield and Rapson (1996), the two major kinds of love that people experience are called
A) passionate and companionate love. B) fatuous and empty love. C) consummate and adaptive love. D) interpersonal and intrapersonal love.
What is the biggest single behavioral effect of age-related physical change in late adulthood?
A) Increased irritability B) Loss of energy C) Lack of sexual desire D) A general slowing down