Exam 8: Experimental Research Design

In the one-group pretest-posttest design which of the following threats to internal validity is NOT controlled?

Even though the one-group pretest-posttest design is inadequate, it has one methodological advantage over the one-group posttest-only design, and that is

The major disadvantage of a within-participants design is that

A group of physicians tests a new analgesic on their patients with chronic pain problems. They obtain patient ratings of pain, administer the new drug for a week, and then obtain pain ratings again. They find that pain ratings are down 10 points at their second observation. This is an example of which experimental design.

Hannah wants to see if her new technique of ping-pong playing can increase one's ping-pong performance. She asks the U.S. Olympic ping-pong team to work with her. Half of the U.S Olympic team is randomly assigned to be taught by the new style, the experimental group, and the other randomly assigned half are not, the control group. Her technique does not significantly increase the performance of the experimental group compared to the control group, perhaps because they are already so good at the sport. This could be an example of

Dr. Sheffield wants to investigate the causal relationship between frustration and memory. She divides participants into two groups using random assignment. One group is given a problem to solve that has no solution, inducing frustration, while the other group is given a problem to solve that has a solution. Then both groups have their memory tested. The group that is in the frustration condition can also be called the

In all repeated-measures designs

A______ occurs in a factorial design when there are differences on the dependent variable in the different levels of one condition, that are consistent across the levels of the other independent variable .

Use the following table to answer questions -This table contains 6 groups each represented by a _______.

What is the factor that makes the between-participants posttest-only design a "strong" experimental design and the nonequivalent posttest-only design a weak design?

A mixed factorial design has

The most important difference between weak and strong research designs is that strong designs

A research study examined the effects of playing violent or non-violent video games on the aggressive behavior of children of two different ages 10 year olds and 13 year olds). The researchers found that, regardless of age, children who played violent video games were more aggressive than those who played non-violent video games. This finding represents an)

Any experimental design that incorporates more than one independent variable is called an) design.

Which of the following is a clear example of an interaction?

Factorial designs present many problems. Which of the following is NOT among them?

The difference between a factorial experimental design and a one-way design is that

Factorial designs are very frequently used because they have many advantages. Which of the following is NOT among them?

An experiment was designed to determine if gender of the interviewer and the amount of eye contact by the interviewer will influence the participant’s liking of an interviewer. Thus participants were randomly assigned to groups that had either a male or female interviewer who made little, moderate, or sustained eye contact. At the end of the sessions, the participants were asked to rate their liking of the interviewer. -If the experimenter wanted 8 participants per group, she would need a total of _________participants.

An experiment was designed to determine if gender of the interviewer and the amount of eye contact by the interviewer will influence the participant’s liking of an interviewer. Thus participants were randomly assigned to groups that had either a male or female interviewer who made little, moderate, or sustained eye contact. At the end of the sessions, the participants were asked to rate their liking of the interviewer. -This is a _________design.