Several decades ago, the gap between the IQ scores of African Americans and White Americans was estimated to be about 15 IQ points. Research from 2002 suggests that in 30 years that gap closed by about ________ points
a. 1 to 3
b. 2 to 5
c. 4 to 7
d. 7 to 10
Answer: c. 4 to 7
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At first, baby Mario was easily awakened every night by a barking dog in his neighborhood. Several weeks later, Mario's sleep is not bothered by the dog's barks. This is an example of
A) classical conditioning. B) extinction. C) habituation. D) recovery.
Autism spectrum disorder is most characterized by which of the following?
A. The inability to maintain sustained attention B. Problems in social communication and interaction C. Disorganized patterns of speech D. Procrastination and other task-avoidance behavior
The first psychological laboratory in Leipzig, Germany was set up in order to
a. break down conscious experiences, such as sensations. b. study how the use of reinforcement and punishment alter behaviors. c. understand the unconscious conflicts individuals experience. d. understand how language and intelligence develop.
You are a principal of an elementary school and have been approached by a vending machine company regarding installing machines in your school. After some research, you find that __________ of American elementary schools allow vending machines.
A. one-tenth B. one-quarter C. one-third D. one-half