Taak 6: Operationalisaties en meetinstrumenten Flashcards
Quantitative types of data
4
- Performance measures - hoe goed doe je het?
- Attitudinal measures - wat vind je ervan?
- Behavioral observations - hoe gedraag je je?
- Factual information
Validity
Definitie; 2 aspecten
NVT
Development of sound evidence to demonstrate that the test interpretation matches it proposed use.
Evidence for validity
5
Based on…
1. test content
2. response process
3. internal structure
4. relations to other variables
5. consequences of testing
Types of reliability
5
- Test-retest reliability
- Alternate forms reliability
- Alternate forms and test-retest reliability
- Interrater reliability
- Internal consistency reliability
Scales of measurement
4
- Nominal scales
- Ordinal scales
- Interval scales
- Ratio scales
Qualitative categories of data
4
- Observations
- Interviews/questionnaires
- Documents
- Audiovisual
Examine internal consistency
3 ways
Kuder-Richardson split half test
Spearman-Brown formula
Cronbach’s coefficient alpha
Reliability
Kuder-Richardson split half test
Used when? 3
Items are scored right/wrong categorically
Not influenced by speed
Items measure common factor
Internal consistency reliability
Spearman-Brown formula
Modification of Kuder-Richardson split half test. All items. Categorical scores.
Internal consistency reliability
Cronbach’s coefficient alpha
In case of continuous variables
Internal consistency reliability