Day care research in the 1980s suggested that attachment is affected if the infant
A) spent more than 40 hours per week in day care.
B) was placed in day care before 6 months old.
C) was placed in day care after 9 months old.
D) spent more than 20 hours a week in day care.
D) spent more than 20 hours a week in day care.
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Regarding circadian rhythms, which of the following statements is FALSE?
a. Frequent time shifting can wreak havoc on circadian rhythms. b. During exposure to light, melatonin production increases, helping us maintain wakefulness. c. Light entering through the eye helps keep the body clock in sync with day and night. d. Body temperature follows a circadian rhythm in which temperature falls a few degrees during the middle of the night. e. Circadian rhythms are found in almost all species, including paramecia and trees.
In a study by Taylor and Hort, three- to five-year-old children were shown an eraser that looked like a cookie. What did the researchers conclude about the working mind of young children from their study?
A. Young children have difficulty with appearance-reality distinction. B. Young children have a firm grip on concrete-realism. C. Young children have an immature understanding of objective-relatively. D. Young children have mastered object permanence.
Peter believes listening to relaxing music will improve memory. He designs a study in which 15 people listen to relaxing music while studying for 30 minutes and 15 people study in a quiet room for 30 minutes. He measures how much they remember from the material they studied. In this example, the independent variable is:
a. the amount that the participants remember from the material they study b. what the participants hear while they study (relaxing music or no music) c. the number of people who take part in the experiment d. the length of time the participants were allowed to study the material
The trend in recent decades for women to nurse their babies, at least for several months after birth, is a result of the belief that, among other things,
a. infants who are bottle-fed are more likely to develop social and behavioral problems. b. infant who are bottle-fed are more likely to become obese. c. mother's milk is more nutritious than infant formula. d. mother's milk provides protective and preventive components such as antibodies.