Dr. Subing conducted a research experiment investigating the effect of ceiling fans on water consumption in laboratory rats. She was able to control for almost every factor that would influence the rats' desire to drink water,
so in the end she had a lot of confidence that the dependent variable (water consumption) was caused exclusively by the independent variable (ceiling fans). In statistical terms, this project has high __________ validity.
a. Internal
b. Construct
c. Predictive
d. Criterion
Answer: A
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What is the main distinction between the evolutionary theories of Charles Darwin and Jean-Baptiste de Lamarck?
a. The concept of an organism's ability to "acquire" an adaptive trait. b. The exact manner in which human beings evolved from animals. c. The acceptance or rejection of the influence of a "higher power" or "God figure" in evolution. d. The recognition that some traits that are not adaptive can still serve a purpose for a species.
Adolescents need about _____ hours of sleep each night
A) 5 B) 7 C) 9 D) 11