A child psychologist conducts a study to test whether infants born prematurely begin to walk earlier than do infants in general. Which of the following scenarios represents a Type I error?
A) The psychologist concludes that premature infants do walk earlier than infants in general when the true situation is that they actually do not.
B) The psychologist concludes that premature infants do walk earlier than infants in general when the true situation is that they actually do.
C) The psychologist concludes that premature infants do not walk earlier than infants in general when the true situation is that they actually do.
D) The psychologist concludes that premature infants do not walk earlier than infants in general when the true situation is that they actually do not.
A
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Which of the following is NOT a characteristic of a person who has Charles Bonnet syndrome?
a. They are partially blind. b. They are mentally disturbed. c. They are capable of engaging in reality testing. d. They experience "sane hallucinations."
Marginal means are
A) the means of one grouping variable alone. B) used to identify interaction effects. C) always reported in research articles. D) the means of both grouping variables, minus the interaction.