Refer to Exhibit 11-4. A teacher researcher randomly assigned students within a classroom to two ...

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

Ques. 2

When writing a quantitative research report it is recommended that it be written
 
  a. in a narrative, informal manner.
  b. in a convincing and argumentative style.
  c. in a creative and innovative format.
  d. according to the prescribed format.

Ques. 3

Refer to Exhibit 11-4. A researcher used two classrooms in an experimental study. It was found that the E group had more high ability students than the C group before the study began.
 
  a. Regression
  b. Diffusion
  c. Mortality
  d. Selection
  e. History

Ques. 4

A researcher wants to investigate the effectiveness of three versions of a computer-assisted instructional (CAI) program in math on the achievement of elementary school students in math. The researcher wants to know if the effectiveness of the program would depend on the math aptitude (classified as above and below average) and the gender of the students. What experimental design would you recommend for this study?
 
  a. 1  2  3 factorial design
  b. 3  2  2 factorial design
  c. Solomon three-group design
  d. Randomized subjects, pretest-posttest, control group design
  e. None of these is true.

Ques. 5

In an experimental study using pre- and posttests, which of the following instruments is most likely to have a reactive effect?
 
  a. Arithmetic pretest
  b. Scholastic aptitude test used for matching purposes
  c. Film showing prejudice toward minorities
  d. Divergent thinking pretest

Ques. 6

This experimental design
 
  (R)
  X
  Y₂
  (R)
  -
  Y₂
 
  is recommended for studies in which
 
  a. pretest reactivity is likely to occur.
  c. a large sample is available.
  b. no control group is available.
  d. only a small sample is available.

Ques. 7

After an experiment was in progress, a researcher learned that the experimental group had a more experienced teacher than did the control group. Should the researcher mention this fact in the research report?
 
  a. Yes, any factor which might affect the internal validity of the experiment should be reported.
  b. No, it is not necessary for the reader to know all the details about problems which arise during the course of a study

Ques. 8

The difference between the group means in a pretest-posttest control group experimental design can be tested for statistical significance most precisely by
 
  a. analysis of variance of the groups' means on the posttest.
  b. separate t-tests of the prepost difference for the experimental and for the control group.
  c. analysis of covariance on the groups' posttest means with pretest as the covariate.
  d. analysis of variance of the mean changes from pre- to posttest for the two groups.

Ques. 9

The best experimental design to use to determine the effect of a pretest on the dependent variable is a(n)
 
  a. ABA design.
  b. counterbalanced design.
  c. Solomon four-group design.
  d. randomized pretest-posttest, control group design.

Ques. 10

A 2  2  2 factorial design indicates that the experiment includes
 
  a. two dependent variables.
  b. three dependent variables.
  c. two independent variables.
  d. three independent variables.
  e. eight independent variables.