Karteikarten: Psychometric Foundations and Test Reliability — 16 Karten

Psychometrics — definition?

Measurement of psychological attributes.

Test Mental — role?

Assess individual sensory-motor differences.

Classical Test Theory — key assumption?

Observed score = True score + Error.

Optimal performance tests — purpose?

Measure maximum ability.

Response formats for typical tests?

Binary choices, ordered categories.

Item difficulty index — what?

Proportion answering correctly.

Item discrimination index — purpose?

Differentiate high and low scorers.

Classical Test Theory reliability methods?

Parallel forms, test-retest, internal consistency.

Sources of measurement error?

Transient, specificity, random errors.

Increase reliability — method?

Add items, standardize procedures.

Item analysis — indices?

Difficulty, discrimination, validity.

Reliability — definition?

Consistency of test scores.

Item validity index — purpose?

Predictive accuracy with external criteria.

Test construction — key guideline?

Align items with content and objectives.

Strategies to improve reliability?

Increase items, control administration, refine items.

Speed vs power tests — difference?

Speed emphasizes quickness; power measures max ability.