What effect do within-subjects designs have on the number of research participants?
a. It increases the number needed since the error variance increases.
b. It increases the number needed because the F ratio tends to be larger.
c. It reduces the number needed since each participant serves as her own control.
d. It reduces the number needed since most studies of this type are concerned with populations that are small.
C
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According to the article A Family Affair about working mothers, the primary research study found that mothers who did not work at all generally had:
(a) higher SES than working mothers (b) fewer children than working mothers (c) children with lower test scores than the children of working mothers (d) many cultural and social activities compared to the mothers who worked
We read both during eye fixations and during the eye movements between fixations
a. True b. False Indicate whether the statement is true or false