Exam 2: A: Scientific Methods in Psychology

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If you arrange scores from the highest to the lowest,the middle one is called the ______.​

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Any ethical experiment on people begins by asking participants for their informed consent.​

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In general,scientists are impressed with an experimental result if the p value is small.​

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A double-blind procedure reduces the influence of demand characteristics.​

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"It is unlikely that chance alone would produce results like this," means that "It is unlikely that chance alone did produce these results."​

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One objection to claims of extrasensory perception is that the explanations are not parsimonious.Another objection is that the results are not ____________________.​

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To say a result is replicable means that other investigators can get similar results.

(True/False)
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Describe an example of a negative correlation.​

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A good scientific theory should be falsifiable.​

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An experimenter manipulates one variable to see how it affects a second variable.The one the experimenter manipulates is the ___________ variable.​

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An instructor measures to what extent the students who attend class regularly also do well on the tests.This type of research is called a ___________​

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Why have many psychologists begun to worry that some of the published results may not be replicable?​

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To reduce or avoid effects of experimenter bias,it is best to have a _______ observer make the observations or collect the data.​

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Several laboratory demonstrations of extrasensory perception are consistently replicable.​

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Other things being equal,scientists prefer the most parsimonious theory.​

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The mean is especially useful if the scores approximate the normal distribution.​

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A meta-analysis combines results from many studies as if they were one large study.​

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Random assignment is an important procedure in both experiments and correlational research.​

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Before conducting any experiment on humans,a psychological investigator must obtain ___________ consent from the participants.​

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A case history studies a random sample of the population.​

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