Module 5 Flashcards
the exact procedure for creating values of the independent variable
Experimental Operational Definition
the exact procedure for measuring the dependent variable
Measured Operational Definition
Reliability
- Interrater Reliability
- Test-retest Reliability
- Interitem Reliability
observers agree in
their measurement
of the behavior
Interrater Reliability
the degree to which a
person’s scores are
consistent across two or
more administrations of a measurement procedure
Test-retest Reliability
the degree to which different parts of an instrument that are designed to measure the same variable achieve consistent results
Interitem Reliability
Validity
- Face Validity
- Content Validity
- Construct Validity
- Predictive Validity
- External Validity
- Internal Validity
a manipulation or measurement technique is self-
evident
Face validity
how accurately a measurement
procedure samples the content
of the dependent variable
Content validity
how accurately an operational definition represents a construct
Construct validity
how accurately a measurement procedure predicts future performance
Predictive validity
the degree to which research findings can be generalized to other settings and individuals
External validity
the degree to which changes in
the dependent variable across
treatment conditions were due
to the independent variable
Internal validity
Threats to Reliability and Validity
- History threat
- Maturation threat
- Testing threat
- Instrumentation threat
- Statistical regression threat
- Selection threat
- Subject mortality threat
- Selection interactions
occurs when an event
outside the experiment threatens internal validity by changing the dependent variable
History Threat
produced when physical or psychological changes in the subject threaten internal validity by changing the DV
Maturation Threat
occurs when prior exposure to a measurement procedure affects performance on this measure during the experiment
Testing Threat
when changes in the measurement instrument or measuring procedure threatens internal validity
Instrumentation Threat
occurs when subjects
are assigned to conditions on the basis of extreme scores, and subjects are retested using the same procedure to measure change on the dependent variable
Statistical Regression
Threat
occurs when individual differences are not balanced across treatment conditions by the assignment procedure
Selection Threat
occurs when subjects drop out of experimental conditions at different rates
Subject Mortality
Threat
occur when a selection
threat combines with at
least one other threat
Selection Interactions
