Flashcards in Chapter 6 Glossary Deck (20):

1

## What is an artifact?

### Any apparent effect of a major conceptual variable that is actually the result of an uncontrolled confounding variable.

2

## What is canonical correlation?

### A correlation between two sets of variables.

3

## What is a coefficient of determination?

### The square of the pearson product moment correlation. It represents the proportion of variability in one variable that can be predicted based on information about the other variable.

4

## What is cohort effect?

### Concept that people of a given age and culture behave similarly to one another and differently from people of other ages and cultures due to shared life experiences.

5

## What is confounded?

### Variables are confounded if they vary together, so that is impossible to determine which variable was responsible for the observed effects.

6

## What is confounding variable?

### Any uncontrolled variable that might affect the outcome of a study. A variable can confound a study only if there is a group mean difference on the variable and the variable is correlated with dependent measure.

7

## What is a control group?

### A group of participants that serves as a basis of comparasion for other groups. The ideal control group is similar to the experimental group on all variables except the independent variable that defines the group.

8

## What is cross-cultural research?

### Exploring psychological phenomena across more than one culture.

9

## What is cross-sectional design?

### A design that compares performance of people of different ages or at different time in history. Often contrasted with longitudinal designs.

10

## What is a demographic variable?

### Data that describe the participants in a study.

11

## What are experimental groups?

### Groups defined by a specified level of the independent variable. Contrasted with a congtrol group.

12

## What are experimentor expectancies?

### Expectations of the researcher that may affect the accuracy of observations especially when judgements are required.

13

## What filler items?

### Questions that are included in the dependent measure, but no scored, in order to distract particular parts from the purpose of the study.

14

## What is longitudinal design?

### A research design in which a group of participants is followed over time.

15

## What is moderator variable?

### Any variable that has an effect on the observed relationship between two or more other variables.

16

## What are multiple correlation?

### Correlation between a criterion and a set of variables.

17

## What is a multivate correlational design?

### Correlational designs that include more than two variables.

18

## What is partial correlation?

### A correlation between two variables, in which the effects of a third vairable are statistically removed.

19

## What is path analysis?

### Procedure that seeks to test causal models by factoring the correlation matrix to see how closely the correlational pattern fits the model.

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