Dr. McBride wants to know if a 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
Correct Answer:
Verified
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