Exam 11: Experimental Research Design

A research study has a design with two groups receiving a pretest, one of which receives treatment, and two groups who are not pretested, one of which receives treatment.This is a

The major means of control in single-subject experimental designs is

In an experimental study using pre- and posttests, which of the following instruments is most likely to have a "reactive effect"?

Single-subject research would be described as

Exhibit 11-5: Indicate whether the following statements refer to internal validity or external validity. -Refer to Exhibit 11-5.Can the results of the study be applied to elementary school students in rural settings?

A simple reversal (ABA) design

A basic characteristic of single-subject experimental research is

Exhibit 11-5: Indicate whether the following statements refer to internal validity or external validity. -Refer to Exhibit 11-5.Does this experiment represent reality?

Exhibit 11-4.Identify the major threat to internal validity in the following research studies. -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.

Exhibit 11.1: In the following items, select the experimental design that best fits the descriptive statement. -Refer to Exhibit 11-1.Failure to control history and maturation is a definite weakness.

In a randomized subjects pretest-posttest control group design, results might best be analyzed through

The major problem in single-subject research is

In the fall semester, a professor compared a lecture approach to teaching statistics (using a sophomore class) with a problem-oriented approach (using a senior class).Both sections were given the same final exam.The professor repeated the same experiment in the spring semester.This study shows a confounding of

Exhibit 11.1: In the following items, select the experimental design that best fits the descriptive statement. -Refer to Exhibit 11-1.Regression is controlled by random assignment, but the main effects of testing and the interaction of testing with X are not determinable.

A researcher wants to study the effect of three treatments, social class, and gender on a dependent variable.The best design to use is

Exhibit 11-2: The following means (graphs a - e) show some possible outcomes of a study investigating the relationship of two handwriting instruction methods, A and B, on the handwriting scores of boys and girls.The scale on the left shows dependent variable scores. -Refer to Exhibit 11-2.Which diagram shows no interaction and no gender difference but does show method differences?

The term "confounding" refers to the presence of

A researcher has developed a series of in-service training programs for teachers that he believes will improve their effectiveness in the classroom.The researcher observes and compares teacher classroom behavior before and after the teachers attend the in-service training.If this design has a flaw, suggest a way(s) that you would improve it.

Which of the following designs would probably be highest in internal validity?

Counterbalanced designs