Which statement about fear in infants is true?
A. Fearful reactions tend to be less common in the second year than in the first year.
B. The most frequent expression of fear is to unfamiliar adults.
C. The intensity of stranger anxiety does not vary much across infants from different cultures.
D. When babies are cared for by larger numbers of people, stranger anxiety tends to increase.
Answer: B
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Which of the following correctly describes the effect of increasing the alpha level (for example, from .01 to .05)?
a. Increase the likelihood of rejecting H0 and increase the risk of a Type I error b. Decrease the likelihood of rejecting H0 and increase the risk of a Type I error c. Increase the likelihood of rejecting H0 and decrease the risk of a Type I error d. Decrease the likelihood of rejecting H0 and decrease the risk of a Type I error
A key to attacking a large task successfully is to divide it into several smaller ones.
Answer the following statement true (T) or false (F)
In a famous study, factory workers who knew they were being monitored as part of an
experiment to improve productivity showed increased performance whenever their work environment was manipulated. This is known as a. a single-blind study. b. a double-blind study. c. the enriched environment effect. d. the Hawthorne effect. e. the placebo effect.
Mary Ainsworth's research demonstrated quite conclusively that attachment between a child and his parents is directly caused by the kind of nurturing that child gets from his mother
Indicate whether this statement is true or false.