How many minutes of complete darkness does it take to reach maximum visual sensitivity?
a. 12 to 15 minutes
b. 15 to 20 minutes
c. 20 to 25 minutes
d. 30 to 35 minutes
D
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Recent research suggests that experienced meditators are able to endure more pain than non-mediators because of differences in
a. opiate use. b. heart rate. c. neuron firing rate. d. brain structure.
The prevalence of autism in the last 20 years has:
A. stayed about the same B. increased slightly C. decreased to a moderate degree D. increased significantly
A researcher separates the participants into two groups. Group A receives an active medication, and Group B receives an empty capsule that looks and feels like the real medication. Group B is the a. treatment group
b. analog group. c. control group. d. experimental group.
In a variable-interval schedule, reinforcement is provided after a _____
A) fixed number of correct responses are made B) random number of correct responses are made C) random amount of time has passed D) fixed amount of time has passed