Psy 100 Pract. quizes 1-4 – Flashcards
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Every twenty-fifth person who subscribed to a weekly news magazine was contacted by market researchers to complete a survey of opinions regarding the magazine's contents. The researchers were applying the technique known as
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c. random sampling.
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. In a study of factors that might affect memory, research participants were assigned to drink either an alcoholic or a nonalcoholic beverage prior to completing a memory test. Those who drank the nonalcoholic beverage were assigned to the ________ group.
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b. Control
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In an experimental study of the effects of dieting on weight loss, dieting would be the
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b. independent variable.
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In an experimental study of the extent to which mental alertness is inhibited by sleep deprivation, alertness would be the
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d. dependent variable.
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Jamie and Lynn were sure that they had answered most of the multiple-choice questions correctly because "the questions required only common sense." However, they each scored less than 60% on the exam. This best illustrates
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d. overconfidence.
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Mr. Brown has gathered evidence that the self-esteem of students is negatively correlated with their typical levels of anxiety. Before he uses this evidence to conclude that self-esteem reduces anxiety, Mr. Brown should first be reminded that
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d. correlation does not prove causation.
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Professor Carter observes and records the behavior of grocery shoppers as they select items to purchase. Which type of research is Professor Carter using?
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d. naturalistic observation
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Psychological theories
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a. organize scientific observations. b. explain observed facts. c. generate hypotheses. d. do all of these things. ANSWER IS D
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Random samples provide ________ estimates of population averages if the samples have small ________.
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b. good; standard deviations
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Researchers control factors that might influence a dependent variable by means of
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a. random assignment.
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Stacey suggests that because children are more impulsive than adults, they will have more difficulty controlling their anger. Stacey's prediction regarding anger management is an example of
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a. a hypothesis.
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Surveys are most likely to indicate that reckless behavior and self-control are
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a. a hypothesis.
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Surveys are most likely to indicate that reckless behavior and self-control are
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d. negatively correlated.
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The ________ is a measure of ________.
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c. median; central tendency
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