Ecological Validity

Population Validity

Independent Measures Design

Matched Pairs Design

Repeated Measures Design

Constant Measure

Independant Variable (IV)

Dependent Variable (DV)

Leading question

Ethics

Quantitative

Qualitative

Control Group

Experimental Method

Hypothesis

Representative Sample

Demand Characteristics

Social Bias

Null Hypothesis

Alternative Hypothesis

One Tailed Hypothesis

Two tailed hypothesis

Unstructured Interview

Structured Interview

Semi-structured Interview

Controlled Observation

Natural Observation

Participant Observation

Overt Observation

Covert Obervation

Unstructured Observation

Structured Observation

Time Sampling

Event Sampling

Social Learning Method

Inter-rater Reliability
(Inter-observer reliability)

'Screw You Effect'

Split Half

Test-retested

Extraneous Variable

Confunding Variables

Systematic Error

Ethical Issues

Reliabilty

Validity

Order Affects

Fatigue Effects