Professor Golder is studying hyperactivity in preschool age children
She is concerned that differences in child rearing, diet, and so forth may affect her results. To minimize these potential preexisting variables, she should be sure to do which of the following?
A) Use random assignment when forming her groups.
B) Include an independent variable.
C) Include a dependent variable.
D) Assign boys to the experimental group and girls to the control group.
Answer: A
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____________________ are principles, standards, or qualities considered worthwhile or desirable.
Fill in the blank(s) with the appropriate word(s).
The probability of getting a result as extreme or more extreme than 5 heads out of a toss of 7 unbiased coins is 0.4532
Indicate whether the statement is true or false
Mark is 5 years old, Caucasian, he lives with his mother because his parents just divorced. Given U.S. patterns, which is the likely scenario?
a. Mark will spend more time with his father than his mother. b. Mark will spend more time with his father compared to Latino and African American children with divorced parents. c. Mark will spend less time with his father compared to Latino and African American children with divorced parents. d. Mark will spend equal time with both parents.
Adolescents enrolled in K-8 schools tend to score lower in academic achievement than do those enrolled in middle school.
Answer the following statement true (T) or false (F)