A researcher decides to use habituation-dishabituation measures to study infants younger than 1 month. All of the following advice about this measure would be useful and accurate except
a. attrition rates are quite low, usually no more than 10 percent
b. there may be individual differences among infants in how quickly they habituate and dishabituate
c. infants will not have to be taught how to respond
d. state changes may interfere with some infants' ability to complete all parts of the procedure
A
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A researcher is conducting a chi-square test for independence to evaluate the relationship between gender and preference for three different designs for a new automobile. Each individual in a sample of n = 30 males and n = 30 females selects a favorite design from the three choices. If the researcher obtains a chi-square statistic of ?2 = 4.81, what is the appropriate statistical decision for
the test? a. Reject the null hypothesis with ? = .05 but not with ? = .01 b. Reject the null hypothesis with either ? = .05 or ? = .01 c. Fail to reject the null hypothesis with either ? = .05 or ? = .01 d. There is not enough information to determine the appropriate decision.
Fast mapping occurs with:
A) vocabulary only. B) vocabulary and writing. C) vocabulary and arithmetic. D) vocabulary, writing, and arithmetic.
Regarding handedness, which of the following statements is TRUE?
a. Right-handed persons are better at visualizing three-dimensional objects than left-handed persons. b. More musicians are ambidextrous than would normally be expected. c. Left-handed persons have more difficulty recovering from brain injury and language loss than do right-handed persons. d. Right-handed persons have a clear advantage in the sports of boxing, tennis, handball, and fencing.
In one study highlighting the role of culture in relation to IQ, Sudanese children averaged 40 points lower when IQ tests required children to _____.
A. use pencils, which they had not used before B. solve complex problems, which they could not solve C. sit still, which is not practiced in their culture D. recall knowledge that they already forgot