Exam 10: Experimental Research

Which question expresses concern for the internal validity of a design?

Sampling bias would most likely not be a problem in which of the following situations?

Exhibit 10-11: Indicate whether the following statements relate to internal validity, external validity, construct validity, or statistical conclusion validity. -Refer to Exhibit 10-11.Can the results of the study conducted in a suburban school be applied to elementary school students in rural settings?

Which of the following is the appropriate description of "statistically significant"?

Name the four types of validity that are important in experimental research.

Any type of attention may lead the subjects in the experimental group to respond in an other-than-normal manner.This phenomenon is called

The finding that individuals' performance may be altered if they are subjects in an experimental treatment is known as the

Select the term which least belongs with experimental research.

The use of a placebo in an experiment on the side effects of a new drug is an example of a ____ experiment.

If the John Henry effect were exerting an influence in an experiment, one would expect

Distinguish between random selection and random assignment.

Volunteers for a research study could introduce bias because

Exhibit 10-7: Identify the threats to internal validity illustrated in the example below. -Refer to Exhibit 10-7.The students who scored extremely high on a test would score lower if given the test again.

Exhibit 10.1: A third grade teacher feels that vocabulary instruction will help her children improve their reading scores.Half of her class receives vocabulary instruction, while the other half has a library period.She will compare reading scores after four months. -Refer to Exhibit 10-1.This study would be classified as

Exhibit 10-2: In its simplest form, an experiment has three characteristics.Choose the characteristic that corresponds with each example. -Refer to Exhibit 10-2.A posttest of the groups' intrinsic and extrinsic motivation is given.

When a researcher is confident that results can be attributed to a treatment's influence and nothing else, it is said that the study is ____ valid.

Distinguish the Hawthorne effect from the John Henry effect in experimental research.

Which would be the least appropriate way to assign subjects to experimental groups?

A lack of original equivalency between two preexisting groups can be partly compensated for by using a pretest, posttest, and a/an

Exhibit 10-9: Identify the threats to internal validity illustrated in the examples below. -Refer to Exhibit 10-9.Students were given a pretest measuring attitudes toward a minority group and then viewed a film on the accomplishments of members of the minority.The students showed significantly more favorable attitudes after viewing the film.