Which of the following is true of the mediatorsinmultiple regression analysis?
a. A mediator changes the relationship between a predictor and a criterion variable.
b. A mediator establishes "how" or "why" one variable predicts or causes a criterion variable.
c. A mediator can be either categorical or continuous.
d. A mediator addresses"when" or "for whom" avariable most strongly predicts or causes an outcome variable.
b
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Of the following behaviors that will help a crisis worker know whether a child is being sexually abused, which one does not belong? The sexually abused child may:
A) ?come to school early and stay late. B) ?act out by hurting oneself rather than other children. C) ?be hypervigilent of others and surroundings. D) ?be sexually shy and appear ignorant of sexual matters.
It has been estimated that as many as _____ of the women who give birth each year in the United States smoke cigarettes, and did so during pregnancy.
a. 5.7% b. 28.6% c. 17.4% d. 41%
If anything, informed consent when working with children is ___________________
A) ?not an issue when you work in a well-organized school system B) ?perhaps even more important than with adults C) ?a concern to parents D) ?all of these
Answer the following statement(s) true (T) or false (F)
1. Many pairs of psychological variables have zero correlation. 2. The percentage of explained variance for a Pearson correlation of r = 0.80 is found as 100 – 80 or a total of 20%. 3. Factor analysis is a method for uncovering latent dimensions in a set of data with many variables. 4. Interval and ratio data are required for conducting a log-linear regression.