UWEC Psyc 271 - HELP

May god help our souls

Descriptive Research

Most basic data; polls, prevalence of behaviors

Correlational Research

Predictor and outcome variables; narcissism and number of friends

Quasi-Experimental Research

Naturally occurring groups; GPA vs high or low study times

Experimental Research

Independent and Dependent Variables; Can imply causation

Nominal Variable

Numbers assigned arbitrarily, no true zero, non-overlapping

Ordinal Variable

Rank ordering of behaviors, does not state distance between, no true zero

Interval Variable

Equal differences between responses, no true zero

Ratio Variable

Contains a true zero point

Categorical Variable

Naming/Grouping Variable

Discrete Variable

Numeric Variable

Continuous Variable

Measurement Variable

Reliability

The degree to which a measurement consistently produces the same results under the same conditions.

Test-Retest Reliability

Consistency of responses on a measure, over time

Internal Consistency Reliability

The extent to which items on a test measure the same construct and yield similar results.

Interrater Reliability

The degree to which different raters or observers give consistent estimates of the same phenomenon

Validity

Measuring what you intend to measure

Internal Validity

Ability to eliminate alternative causal explanations

External Validity

Replicability

Ecological Validity

How real the study is

Construct Validity

Does it measure what you’re trying to measure

Face Validity

Appears to measure what it intends to

Content Validity

Represents all facets of that construct

Between-Subjects

Comparing different groups

Within-Subjects

Every person participates in every condition

Pearson’s Correlation

Both interval or ratio

Spearman’s Correlation

One or more ordinal variables

Regression

Set of predictor and outcome variables

Independent Samples t-test

One nominal with two levels, one continuous, between subjects

Paired Samples t-test

One nominal with two levels, one continuous, within subjects

Between Subjects ANOVA

One nominal variable with more than two levels, one continuous variable, between subjects; OR two+ nominal variables and one continuous variable with all IVs being between subjects

Within subjects ANOVA

One nominal variable with more than two levels, one continuous variable, within subjects; OR two+ nominal variables and one continuous variable with all IVs being within subjects

Mixed ANOVA

Two+ nominal variables and one continuous, IVs both between and within subjects

Chi-Square

Two nominal or ordinal variables or one nominal and one ordinal