The results of a quasi experimental design involving non-equivalent control groups with pretests and posttests
a. Cannot be believed because of confounding
b. Cannot always be interpreted
c. Lack power
d. Lack external validity
Question 2
Whether quasi experiments with pretest and posttest designs can be interpreted depends on
a. Whether the pattern of result can be accounted for by other differences between the groups.
b. Whether pretest and posttest performance differ for the groups
c. The number of participants in the study
d. The number of participants in the control group
Formation of additional eyes in Drosophila caused by the abnormal expression of a master control gen
The endocrine control of spermatogenesis.
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Gate control theory. A. open gate, B. closed gate