In an experiment, a researcher wants to avoid the presence of __________.
A. extraneous variables
B. dependent variables
C. independent variables
D. random assignment
Answer: A
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Which of the following is the index of how much a typical score differs from the mean of a group of scores?
a. z-score b. range c. Pearson r d. standard deviation
Which of the following is a respondent behavior?
a. Matt thinks, "This is fun." b. Jessica blinks when the dust hits her eye. c. Christian stops at the stop sign. d. Belle is shy.
Which of the following individuals is most likely to be diagnosed with a paraphilic disorder?
A. Ms. A, who is married to a man but often fantasizes about sex with women B. Mr. B, who is sexually aroused by rubbing against strangers on the subway C. Ms. C, who stumbled across a video of animals having sex and enjoyed watching it D. Mr. D, who feels like he is addicted to masturbation, sometimes doing it five times per day
Which of the following combinations of behaviors does NOT qualify for ADHD?
a. Excessive fidgeting and a lack of desire to form friendships b. Failure to pay attention and failure to remain seated while watching TV c. Always losing or misplacing important school materials and difficulty being quiet when necessary d. Very messy handwriting and rudely grabbing things away from others e. Leaving several projects unfinished and finding it almost painful to just relax