A double pretest design is particularly attractive when ____
a. the researcher is evaluating a program that has already begun
b. the unit of study is a community rather than an individual
c. it is important that those who most need the treatment receive it
d. there are concerns about selection-maturation effects
d
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You have a total of 90 participants in your independent-samples study. Your degrees of freedom would be ______.
A. 90 B. 89 C. 88 D. 91
In terms of research examining social status, which group of children are never mentioned as either "liked" or "disliked?"
popular || neglected || rejected || controversial || || ||
Less well-educated people with lower lifetime earnings are the __________ likely to __________
A) least; benefit from retirement preparation programs B) most; begin planning for retirement in early adulthood C) least; attend retirement preparation programs D) most; look closely at their financial well-being
The probability of having a child with Down's syndrome increases with the age of the parents
Indicate whether the statement is true or false