Exam 18: Repeated-Measures Analysis of Variance

In a repeated-measures design, the error term is equivalent to the interaction between subjects and the repeated-measures factor.

In a learning study using repeated measures, the correlation between early and later times will likely be low. Analyzing fewer levels of the independent variable would help to avoid violating the assumption of

The typical way to control sequence effects is called

Explain why SS_subjects is removed from SS_error in repeated-measures designs.

If, in the example of a headache study used in the text, all subjects had been studied over the same period of time, differences that might be caused by stressful times (such as Christmas) would

The assumptions behind the analysis of repeated-measures designs include

If we have a repeated-measures design with subjects receiving four levels of a treatment, we assume that

Calculate and interpret F based on the following data.

Which of the following demonstrates the similarities of a repeated-measures analysis of variance for two trials and a t test for related means?

Given the following data from a repeated-measures design, what is the value for SS_error? SS_subjects = 950, SS_time = 1500, SS_total = 3100

Measuring the height of the same group of children every year for three years is an example of a between-subjects design.

A _______ design is one in which subjects are measured repeatedly over time.

Answer the following questions based on the summary table below. a. How many people were in the sample? b. How many times was the dependent variable measured? c. Was there a difference in the dependent variable over time?   Explain.

The major advantage of repeated-measures designs is that

A researcher collected data from behaviorally disturbed youth to see if introducing a token economy would reduce their disruptive behavior. He collected 3 weeks of data at baseline, treatment, and withdrawal respectively. Identify three meaningful multiple comparisons you could calculate based on this data. Explain your answers.

Calculate and interpret F for the following example.

You want to run a study examining the effects of poverty on the development of antisocial behavior. You randomly select a large group of normal 12- year-old children and sort them into three groups on the basis of family income. You meet with them yearly until they are 25 years old, using a standard assessment of antisocial behavior. What test should you run to analyze this data?

Counterbalancing is a technique to

If you are concerned that you have violated the assumptions behind a repeated-measures design, you can

If a repeated-measures analysis of variance usually has an error term that is smaller that the error term in the corresponding between-subjects design, then we can assume that