Use of a pretest as well as a posttest, rather than a posttest by itself, is valuable because
a) One can evaluate and statistically adjust for any pretest sensitization effect.
b) One can use a directional test to evaluate change, i.e., did patients improve.
c) Reduces bias due to multiple statistical tests
d) The error term is reduced in the statistical test and power is increased.
Correct Answer: d
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Young children produce __________, unique strings of phonemes that serve word-like
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According to the article Psychics and Scientists, in the second section of the study, the participants were
asked to identify true statements from a list of both true and untrue statements about a crime. What did the researchers find? (a) the psychics did much better than the non-psychics (b) both groups did about the same (c) neither group picked even one true statement (d) both groups were able to pick all of the correct items