Dr. McBride wants to know if the teacher’s use of encouragement in the classroom affects the children’s self-esteem. To assign children to treatment conditions, Dr. McBride should __________
A) carefully distribute the children according to their test scores
B) divide the children so each group has an equal number of boys and girls
C) draw the children’s names out of a hat
D) assign the quieter children to the same treatment condition
Answer: C
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Regarding toilet training, which of the following statements is FALSE?
a. Parents may control when toilet training starts, but maturation tends to dictate when it will be completed. b. Current guidelines suggest that toilet training goes most smoothly when begun between 10 and 16 months of age. c. Parents are asking for failure when they try to force a child to learn skills too early or too late. d. If toilet training begins much later than the recommended guidelines, a child will be more likely to fail to develop full bladder control and become a daytime "wetter.".
Standard errors of measurement are used to
a. determine whether an observed score is the "true" score. b. determine the standard deviation of the scores. c. calculate the exact true score. d. create confidence intervals around specific observed test scores.