Refer to Exhibit 11-4. Students who had low scores on a reading pretest were chosen for a special instructional program. This group showed significant gains on a reading achievement test administered after a period of four months.
a. Regression
b. Diffusion
c. Mortality
d. Selection
e. History
Question 2
Refer to Exhibit 11-4. A teacher researcher randomly assigned students within a classroom to two groups, one of which received some special instructional materials to take home with them to study and to use with homework assignments. The C group did not get the special materials. The researcher was surprised to find that there weren't significant differences between the two groups on achievement tests and other selected measures.
a. Regression
b. Diffusion
c. Mortality
d. Selection
e. History
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