Deck 11: Moderation,mediation and Multicategory Predictors

Question 1

What is the moderator variable?

A)Whether or not the lecturer has a PhD
B)Student attendance
C)Degree grade
D)Type of degree studied (by the student)

Answer 1

A

Question 2

An educational psychologist is researching whether group consistency and academic performance of students is influenced by gender.Which of the following would act as the predictor variable?

A)Group consistency
B)Gender
C)Performance
D)Number of students

Answer 2

A

Question 3

A moderator effect is indicated if both predictors explain a significant proportion of the variance in the criterion variable.

Answer 3

False

Question 4

An interaction effect is also known as?

A)A mediator effect
B)A moderation effect
C)A deviation effect
D)An interaction effect

Question 5

You are conducting a study into student attendance at lectures and overall degree grade and whether the grade is moderated by whether or not the lecturer has a PhD.Which is the predictor variable?

A)Whether or not the lecturer has a PhD
B)Student attendance
C)Degree grade
D)Type of degree studied (by the student)

Question 6

What is the dependent variable?

A)Whether or not the lecturer has a PhD
B)Student attendance
C)Degree grade
D)Type of degree studied (by the student)

Question 7

Standardization converts scores into?

A)t-scores
B)r-scores
C)z-scores
D)p-scores

Question 8

Chi-square is used to identify interaction effects when the predictor and moderator variables are nominal and the dependent variable is a score variable.

Question 9

What would the moderator variable be?

A)Group consistency
B)Gender
C)Performance
D)Number of students

Question 10

Which of the following should equal 0 for both predictors?

A)Mode
B)Mean
C)Median
D)Range

Question 11

What is the dependent variable?

A)Group consistency
B)Gender
C)Performance
D)Number of students

Question 12

It is recommended that the means of the two predictors are made equal to?

A)0
B)1
C)The median
D)The variance

Question 13

The interaction term is created by multiplying the two predictors together.

Question 14

The means of the two predictors are centred in order to increase the size of the correlation between the criterion variables.

Question 15

At which stage are the two predictors entered in hierarchical multiple regression?

A)First
B)Last
C)At the same stage as the predictors
D)At the same stage as the criterion

Question 16

What is the mediator variable?

A)Whether or not the lecturer has a PhD
B)Student attendance
C)Degree grade
D)None of the above

Question 17

An increase in multicollinearity ensures that the likelihood of a moderation effect being identified is decreased.

Question 18

A moderator effect is where the size of the relationship between one variable and another is?

A)Equal to 0
B)Different for the values of a third variable
C)Not statistically significant
D)Statistically significant,but error strewn

Question 19

Which test would identify interaction effects and indicate moderation effects?

A)Simple regression
B)Binomial logistic regression
C)Multiple linear regression
D)Hierarchical multiple regression

Question 20

At which stage is the interaction entered in hierarchical multiple regression?

A)At the same stage as the criterion
B)At the same stage as the predictors
C)First
D)Second

Question 21

Categorical variables are the same as qualitative variables.

Question 22

Quantitative variables can be continuous variables.

Question 23

If you ask one student to toss a coin three times,what is the probability that it lands heads once?

A).125
B).250
C).333
D).375

Question 24

Categorical variables are the same as quantitative variables.

Question 25

The population parameter is the centre of a confidence interval.