Exam 12: One-Way Repeated Measures Analysis of Variance

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 SS_{ACROSS SUBJECTS}

The sum of squares within in a between-subjects design does not include the effects of individual differences while the sum of squares error in a repeated measures design does.

If the null hypothesis is true,the _____ reflects only sampling error.

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: This study represents a _____-subjects design.

An assumption of the F test is that the sample is _____ selected from the population.

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: In your ANOVA summary table,the ______ source reflects variability in maze completion time (the dependent variable.that is due to disturbance variables such as individual differences;the purpose of partitioning this source of variability is to ______.

Why is a repeated measures analysis of variance usually a more sensitive test of the relationship between the independent and dependent variables than is a between- subjects analysis of variance?

If the assumption of sphericity is satisfied,then the nature of the relationship following a statistically significant one-way repeated measures analysis of variance can be addressed with the _____ test.

The calculation of eta-squared for the one-way repeated measures analysis of variance provides the proportion of variability in the dependent variable that is associated with the independent variable after variability due to ____________________ has been removed.

When sphericity is violated in a one-way within subjects ANOVA design,how do you proceed?

When is the one-way repeated measures analysis of variance typically used to analyze the relationship between two variables?

The one-way repeated measures analysis of variance is typically used to analyze the relationship between two variables when the independent variable has two and only two levels.

The F test for one-way repeated measures analysis of variance is appropriate when the dependent variable is _____ in nature and measured on a level that approximates _____ level characteristics.

_____ serves to turn confounding variables associated with treatment order into disturbance variables.

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: What is the strength of the relationship between computer training and computer knowledge test scores (h²)?

In a one-way repeated measures analysis of variance,the sum of squares IV reflects the influence of the independent variable.

You carried out a study where you tested the effectiveness of a new therapy technique at reducing anxiety.You identified a group of high-anxiety individuals,and you measured their anxiety before therapy,immediately after therapy,and at two follow-up sessions 1 month and 2 months after the therapy is concluded.High scores on the anxiety measure are scaled to reflect relatively higher levels of anxiety.Here is the hypothetical data from SPSS output. As an initial observation (that is,recognizing that significance tests have not been interpreted yet),what does the pattern of the means across the four measurement times suggest about the effectiveness of the new therapy technique?

A researcher conducts a study in which participants all rate each of four advertisements on emotionality (i.e.,how emotional was the content of the advertisement).Which of the following statistical tests would be most appropriate for the analysis of the data?

The probable violation of sphericity in a repeated measures design can be evaluated using the

The variability in the dependent variable of a one-way repeated ANOVA can be partitioned into _____ components.