A disadvantage of experimental research designs is that
a. there are some things that can cannot be experimentally manipulated.
b. they are often conducted in schools and institutions.
c. causal relationships are difficult to determine.
d. they use a measured dependent variable.
a
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Research psychologists typically use convenience samples—groups of people who are easily recruited and studied. A ________ sample would be most accurate because it consists of a larger group of the population of interest
a. representative b. specific c. cross-sectional d. easily measured
In the example of the ABA design in the book, the results indicated that there was a significant increase in performance in the B condition over the baseline A condition, and that there was a significant increase in performance in the second A condition over the B condition. This enabled the experimenter to conclude that the effects were caused by _____
a. the treatment c. testing b. maturation d. none of these
Mahmoud wants his seven-year-old daughter to learn that littering is bad. According to cognitive dissonance theory, how should Mahmoud teach his daughter not to be a litterbug? Mahmoud should
a. give his daughter a big ice cream cone every time she throws her garbage in a trash can. b. yell and scream at his daughter every time she tosses garbage on the ground. c. give his daughter a stern look whenever she litters. d. raise his daughter's allowance whenever she refrains from littering.
The most widely used birth-control method among couples over the age of 30 in committed
relationships is A) sterilization. B) the diaphragm. C) condoms. D) combination oral contraceptives.