Question 1

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}

Accepted Answer

The answer of An industrial psychologist is interested in the...

Question 2

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.

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

A) mean square error 
B) mean square IV 
C) a and b 
D) neither a nor b

Question 4

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.

Accepted Answer

A) within 
B) between 
C) across 
D) random

Question 5

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

Accepted Answer

A) independently 
B) independently and randomly 
C) randomly

Question 6

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 ______.

Accepted Answer

A) IV;test your null hypothesis 
B) Error;use it as the denominator in the F ratio 
C) Across Subjects;use it as the denominator in the F ratio 
D) Across Subjects;separate it from other sources of error

Question 7

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?

Accepted Answer

The answer of Why is a repeated measures analysis of...

Question 8

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.

Accepted Answer

A) Huynh-Feldt 
B) modified Bonferroni 
C) Mauchly 
D) Tukey HSD

Question 9

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.

Accepted Answer

The answer of The calculation of eta-squared for the one-way...

Question 10

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

Accepted Answer

A) Explore other methods of analyzing the data besides ANOVA,because ANOVA won't work properly. 
B) Interpret the Greenhouse-Geisser and/or Huynh-Feldt statistics,because they adjust for lack of sphericity. 
C) Use a more liberal (i.e.,higher)alpha level to compensate for the violation. 
D) Collect more data.

Question 11

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

Accepted Answer

The answer of When is the one-way repeated measures analysis...

Question 12

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.

Accepted Answer

A) True 
 B)False

Question 13

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.

Accepted Answer

A) quantitative;interval 
B) quantitative;ratio 
C) qualitative;nominal 
D) qualitative;interval

Question 14

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

Accepted Answer

A) Counterbalancing 
B) Random Assignment 
C) Random selection 
D) Sphericity

Question 15

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)?

Accepted Answer

The answer of An industrial psychologist is interested in the...

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

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?

Accepted Answer

A) The technique does seem to be reducing anxiety over time. 
B) The technique is actually increasing anxiety over time. 
C) The technique does not appear to be having any influence on anxiety over time.

Question 18

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?

Accepted Answer

A) one-way repeated measures analysis of variance 
B) two-way mixed model analysis of variance 
C) correlated groups t test 
D) independent groups t test

Question 19

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

Accepted Answer

A) Huynh-Feldt epsilon. 
B) Greenhouse-Geisser epsilon. 
C) Mauchly test. 
D) modified Bonferroni procedure. 
E) both a and b

Question 20

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

Accepted Answer

A) 2 
B) 4 
C) 3 
D) none of these

Exam 12: One-Way Repeated Measures Analysis of Variance

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.

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

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.

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

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.