The purpose of matching individual subjects before randomly assigning one to Group A and the other to Group B is to
a. assure that the groups are truly random.
b. assure that the groups are equivalent on the dependent variable.
c. control as many extraneous variables as possible.
d. assure that the groups are not equivalent on the dependent variable.
C
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Teachers of students with behavior disorders can support academic achievement and appropriate behavior by:
a. allowing students to participate in choosing classroom tasks. b. providing plentiful opportunities for students to respond during class. c. offering consistent praise for good performance. d. All of the above.
Psychologist William James founded the Council for Exceptional Children
Indicate whether this statement is true or false.
In testing the mean of a sample, the sample mean 
is transformed into a t-statistic in order to ______.
a. determine the critical values
b. prove our research hypotheses
c. determine whether the alternative hypothesis 
should be one-tailed or two-tailed
d. determine the probability of obtaining the value of the sample mean
Taggart and Wilson (1998) identify three levels of reflective thinking. List them and describe what happens at each level.
What will be an ideal response?