Stats

Question 1

Output variable

Answer 1

Dependent variable

Question 2

Input variable that is manipulated

Answer 2

Independent variable

Question 3

What method may be used for reducing experimenter bias?

Answer 3

Double-blind technique

Question 4

Statistical regression

Answer 4

Tendency of an extreme score to fall closer to the mean after re-testing

Question 5

T/F: In correlational research. The researcher does not manipulate variables

Answer 5

True - variables are measured, not manipulated

Question 6

When do you use a factorial ANOVA?

Answer 6

When two independent variables are being used

Two-way ANOVA or three-way ANOVA if 3 independent variables are being used

Question 7

Main effect (ANOVA)

Answer 7

The effect of one independent variable by itself

Question 8

Interaction effects (ANOVA)

Answer 8

The effects of an independent variable at differing levels

Question 9

What analysis is used when a study involves two or more dependent variables and one or more independent variables?

Answer 9

MANOVA

Question 10

What methods were developed to be used in cases where a researcher knows nothing about the parameters (mean or standard deviation) of a variable?

Measures on an ordinal or nominal scale

Answer 10

Non-parametric

Question 11

When processing data of “low quality” from small samples, or on variables about which nothing is known concerning their distribution, which statistical procedure would be most appropriate?

Answer 11

Non-parametric methods

Question 12

What type of tests are used when the data are measured on an interval or ratio scale?

Answer 12

Parametric tests

Question 13

A correlation coefficient has what value range?

Answer 13

-1.0 and + 1.0

Question 14

What is the most commonly used correlation coefficient?

Answer 14

Pearson r

Question 15

T/F: The Pearson r assumes linearity and homoscedasity

Answer 15

True

Question 16

AB Design

Answer 16

Single-subject design

A = baseline 
B = treatment phase

Question 17

When would an ABAB design be used?

Answer 17

When treatment is re-applied

A = baseline
B = treatment
A = baseline 2
B = treatment 2

Question 18

In an ABAB design, the first treatment administered is withdrawn until the behavior…

Answer 18

Reverts to its original baseline level

THEN treatment is re-applied

Question 19

From a practical and ethical standpoint, one potential problem with an ABAB design in single-subject research is what?

Answer 19

Getting the behavior to revert back to baseline

Question 20

A test has a reliability coefficient of .90. What percentage of variability among examinees on this test is due to true score difference?

Answer 20

0.9

You always interpret reliability coefficient directly

Question 21

How should a reliability coefficient be interpreted?

Answer 21

DIRECTLY!

Question 22

In order to compare results from two or more different studies that measure the same concept but used different outcome measures, you would be most interested in interpreting what?

Answer 22

The effect size

Question 23

When multiple predictors will be used to predict a score on a single criterion, what test should you use?

Answer 23

Multiple regression

Question 24

The Solomon four-group design is used to evaluate what?

Answer 24

The effects of pretesting