Psych Measurement Flashcards
(37 cards)
Consistency
Reliability
Stable characteristics of the Individual.
True characteristics
Chances features of the Individual or the situation.
Random measurement of error
Most common computation for reliability.
Pearson R.
Variance from true differences
True variance
Variance from irrelevant random sources.
Error variance
Difference between the true and actual value.
Error of measurement
Measures the precision of an observed test score.
Standard error of measurement
Sources of error in reliability
Test construction, administration, scoring, and others.
It assumes that each person would have a true score if there were no errors.
Classical test theory
Sample representatives represent the population.
Domain sampling theory
Person with X ability will be able to perform at level of Y.
Item response theory (latent trait theory)
5 ways to measure reliability and explain each one of them.
Test-retest reliability
Parallel/alternative form method
Split-half method
Inter-item consistency
Inter-scorer reliability
Rater’s general tendency to make ratings near the midpoint of the scale.
Errors of Central tendency
Insufficiently critical
Leniency/generosity error
Overly critical
Severity error
Good and bad impressions affecting the score.
Halo and horn effect
Raters compares examinees with one another instead of against.
Contrast error
Rating based on the most recent performance.
Recency bias
Consistent accuracy
Validity
Broad categories
Constructs
Domain of interest
Content validity
Criterion behavior scores.
Criterion-related validity
Differentiate postdictive,concurrent, and predictive with each other.
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