According to Piaget, magical thinking is common during the preschool years because young children ________.
A. fail to grasp the principles of conservation
B. egocentrically assign human purposes to physical events
C. cannot mentally go through a series of steps in a problem and then reverse direction
D. believe that physical characteristics of objects remain the same, even when their outward appearance changes
Answer: B
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a. the United Kingdom b. the United States c. China d. both the United Kingdom and China
Research on the effects of discrimination on stress shows that being rejected by a member of the same race tends NOT to produce:
A) avoidance. B) increased cortisol levels. C) vigilance for danger. D) shame.
At the first birthday, you should expect that an infant's birthweight has ___________
a. increased by 50% c. doubled b. tripled d. increased by 150%
Which of the following is FALSE?
A. A 15- to 20-minute session in the tanning booth is equivalent in UV ray exposure to one full day at the beach. B. The intensity of light in tanning booths is much greater than it is while sunbathing outside. C. The majority of tanning beds today are safer than in the past because they emit short-wave UV rays that do not penetrate beyond the outer layer of skin. D. Sunlight is a major source of vitamin D in humans and without enough of it, diseases such as rickets occur.