Refer to Exhibit 10-9. More low achievers than other students drop out of an individualized reading ...

Refer to Exhibit 10-9. More low achievers than other students drop out of an individualized reading program designed to lead to gains in reading achievement.
 
  a. experimental mortality
  b. reactive effect of testing
  c. statistical regression
  d. maturation
  e. instrumentation

Ques. 2

Refer to Exhibit 10-9. Students falling below the 10th percentile on a reading achievement test later receive higher scores on a similar test; students above the 90th percentile receive lower scores on the second test administration.
 
  a. experimental mortality
  b. reactive effect of testing
  c. statistical regression
  d. maturation
  e. instrumentation

Ques. 3

Which of the following would represent a variable that could be manipulated in an experiment?
 
  a. Lecture vs. discussion method of teaching
  b. High vs. low socioeconomic status of subjects
  c. Male vs. female subjects
  d. College prep vs. vocational curriculum
  e. High vs. low scorers on an aptitude test

Ques. 4

Matching of experimental and control subjects, homogeneous selection, and analysis of covariance can all be used to
 
  a. reduce the effects of statistical regression.
  b. reduce initial differences between treatment groups.
  c. counterbalance the effects of experimental treatments.
  d. control the learning to learn effect.

Ques. 5

Matching subjects in the experimental and control groups is useful when
 
  a. small samples are to be used.
  b. large differences between the groups on the dependent variable are likely.
  c. random assignment to groups is not possible.
  d. All of these are true.
  e. a and c

Ques. 6

In experimental research, a random procedure is recommended for the
 
  a. selection of subjects.
  c. ordering of multiple treatments.
  b. assignment of subjects to treatments.
  d. Al of these are true.