Dr. Noyd conducts an experiment to determine whether talking to a psychiatrist makes depressed people less depressed. He randomly divides participants who scored highly on a depressive inventory into two groups.Group A discusses their problems with a psychiatrist while Group B does nothing.He finds that Group A shows significantly more improvement in their depression than does Group B. In Dr
Noyd's experiment, the experimental group refers to the ____.?
a. ?differences observed whether or not therapy was received
b. ?individuals who discuss their problems
c. ?scores on the depressive inventory
d. ?random assignment
ANSWER:
b
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Which statement describes the problem of cohort effects?
A. It's difficult to tell whether differences between groups are due to age-related changes or to the shared experiences of people born during that period of time. B. Groups that are older may have richer life experiences than younger groups, making it difficult to explain group differences. C. One's cohort is constantly changing over time, creating problems for researchers. D. It is time-consuming and costly to study multiple cohorts simultaneously.
People usually identify a letter more accurately when it is part of a word than when it is presented by itself. This is known as the _____ _____ effect
Fill in the blank(s) with correct word
The vast majority of those who quit smoking cigarettes do so on their own
a. True b. False Indicate whether the statement is true or false
Frequently, school-age children on a baseball field will shout, "Think fast!" and immediately throw a baseball in the direction of a teammate. What is being tested is the teammate's
forearm strength. reaction time. team spirit. ability to field balls.