Counting how often the peaks of a sound wave pass a microphone is a measure of its:
A) amplitude.
B) frequency.
C) complexity.
D) decibel level.
B) frequency.
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Suppose researchers test 100 college students, whose ages range from 18 to 23. They also test 100 people at a nearby community center for older adults, whose ages range from 70 to 75
The participants are instructed to read a series of short essays and answer questions on them. The average score is 72% correct for the elderly people, and 85% correct for the college students. Which of the following four conclusions would you be most likely to choose? a. You would conclude that the younger people have better memory than the older people. b. You would conclude that the differences in the average scores can be traced to differences in the working memory of the two groups. c. You would recommend that the same study should be repeated with larger groups of participants. d. You would recommend that the study should be repeated, matching the two groups in terms of variables such as education and health.
Which condition is most likely to lead to microcephaly?
a. toxoplasma b. rubella c. cytomegalovirus d. Zika virus disease
The one physical trait of males that seems to be innately attractive to women is:
a. large eyes b. white teeth c. height d. muscular back
Alfred Binet and Theodore Simon's intelligence test was developed as a way to
A) identify children with learning problems who needed to be placed in special classes. B) accurately predict school achievement and vocational success. C) document developmental improvements in children's intellectual functioning. D) measure individual differences in development as a function of race, gender, and birth order.