Exam 12: One-Way Repeated Measures Analysis of Variance

When a _____ design is used,it is not possible to estimate the effects of disturbance variables due to individual differences.

The assumption that the variance of the population difference scores for any two conditions is the same as the variance of the population difference scores for any other two conditions is the ____________________ assumption.

When a repeated measures design is used,the influence of individual differences cannot be estimated or statistically removed from the dependent variable.

An industrial psychologist is interested in the effectiveness of an employee computer training course.A total of 7 employees are enrolled in the course.The psychologist measures computer knowledge (1)just before the training begins, (2)again at the end of training,and (3)again at a 3-month follow-up.An increase in computer knowledge from pre-training to end-of-training would suggest the training is effective.Scores on the computer knowledge test can range from 1 to 10.The tables below summarize the data and part of the data analysis: Based on the F ratio you just computed and the appropriate critical value (3.88),your decision would be to _______,suggesting that ______ a statistically significant effect of training on computer knowledge.

A biopsychologist is interested in studying the effects of marijuana on cognitive skills by studying a group of 7 rats.He puts each rat in a maze and measures the time it takes the rat (in minutes)to find the cheese at the end of the maze.He then puts a mask on the rat and has it inhale marijuana smoke for 5 seconds.He then puts the rat back in the maze,and records its time to reach the cheese.Twenty minutes later he puts the rat back in the maze to test for lasting effects of the drug.The tables below summarize the data and part of the data analysis: What is the MS_Error?

An alternative to counterbalancing as a means of controlling confounding variables is to _____ the conditions for each subject.

In the one-way repeated measures analysis of variance,if the sphericity assumption is not met,the appropriate procedure for evaluating the nature of the relationship is the ____________________ procedure.

To the extent that the mean square within is larger than the mean square error,a larger F ratio and a greater likelihood of rejecting the null hypothesis should result in a between-subjects analysis of variance as opposed to a repeated measures analysis of variance.

If the assumption of sphericity is violated in a repeated measures design,an adjustment factor can be used to obtain new degrees of freedom for

A biopsychologist is interested in studying the effects of marijuana on cognitive skills by studying a group of 7 rats.He puts each rat in a maze and measures the time it takes the rat (in minutes)to find the cheese at the end of the maze.He then puts a mask on the rat and has it inhale marijuana smoke for 5 seconds.He then puts the rat back in the maze,and records its time to reach the cheese.Twenty minutes later he puts the rat back in the maze to test for lasting effects of the drug.The tables below summarize the data and part of the data analysis: What is the correct interpretation of the eta-squared?

A biopsychologist is interested in studying the effects of marijuana on cognitive skills by studying a group of 7 rats.He puts each rat in a maze and measures the time it takes the rat (in minutes)to find the cheese at the end of the maze.He then puts a mask on the rat and has it inhale marijuana smoke for 5 seconds.He then puts the rat back in the maze,and records its time to reach the cheese.Twenty minutes later he puts the rat back in the maze to test for lasting effects of the drug.The tables below summarize the data and part of the data analysis: If you found the F ratio to equal exactly 1.00,what would this tell you?

In the Applications to the Analysis of Social Problems section of Chapter 13,the Mauchly test was found to be significant,indicating

A biopsychologist is interested in studying the effects of marijuana on cognitive skills by studying a group of 7 rats.He puts each rat in a maze and measures the time it takes the rat (in minutes)to find the cheese at the end of the maze.He then puts a mask on the rat and has it inhale marijuana smoke for 5 seconds.He then puts the rat back in the maze,and records its time to reach the cheese.Twenty minutes later he puts the rat back in the maze to test for lasting effects of the drug.The tables below summarize the data and part of the data analysis: What is the SS Total?

The F test for one-way repeated measures analysis of variance is appropriate when the dependent variable is qualitative in nature.

Complete the following table to carry out the Tukey HSD procedure for this study: (NOTE: Students can be asked to fill in all or part of the table below. )

Nullified scores cannot be generated when a within-subjects independent variable has more than two levels.

An industrial psychologist is interested in the effectiveness of an employee computer training course.A total of 7 employees are enrolled in the course.The psychologist measures computer knowledge (1)just before the training begins, (2)again at the end of training,and (3)again at a 3-month follow-up.An increase in computer knowledge from pre-training to end-of-training would suggest the training is effective.Scores on the computer knowledge test can range from 1 to 10.The tables below summarize the data and part of the data analysis: Calculate the F ratio:

A one-way repeated analysis of variance is not appropriate when ______.

Since the value of F required to reject the null hypothesis becomes more extreme as the degrees of freedom become smaller,repeated measures analysis of variance might actually be less powerful than between-subjects analysis of variance when individual differences have only a minimal influence on the dependent variable.

Compare the different sums of squares for a repeated measures design with the sums of squares for a between-subjects design.