Which of the following is true concerning the nonequivalent control group pretest/posttest design?
a. Comparisons can be made between groups on the pretest and the posttest
b. Comparisons can be made within groups from the pretest to the posttest.
c. Because participants are not randomly assigned to groups, we cannot say that they are
d. all of the above
d
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During the first stage of labor, contractions increase in frequency, duration, and intensity until the baby's head is able to pass through the cervix.
Answer the following statement true (T) or false (F)
The category of childhood disorders in which symptoms
involving language, social skills, intellectual abilities and interests can result in a range from high to low functioning is the _____ disorder category. a) attention deficit b) autism spectrum c) childhood personality d) developmental disability
Which of the following factors tends to be related to decreased adolescent self-esteem?
A) Setting high vocational standards B) Being close to one's parents C) Entering middle school D) all of the above
Statistics provide a set of quantitative tools that allow us to rule out ______ as an explanation for the phenomenon under study.
A. confirmatory bias B. confounding variables C. null hypothesis D. randomness