Validity Chp Five Flashcards
How to evaluate validity coefficients
5 general things.
Generalise to other settings. Differential validity for different groups. Changes in the cause of relationships. Meaning of The Criterion. Norming sample used.
Face validity
The appearance the measure has validity
Content related evidence for validity
Expert judgement that the items are representative of the conceptual.
Logical evidence
Three types of Criterion validity
Discriminant validity
Convergent validity
Concurrent validity.
Predictive validity
Evaluating validity coefficient
2 things affecting causal relationship
Has Society changed since the norming. Sample was collected?
Does the time of year affect results?
Four things to Evaluate validity coefficient sample on
Is the sample representative of the group the test is being used on
Has there been cross-validation of the norm Norming samples results with another independent group
Was there adequate variability in the norm samples scores or was there restricted range in the norm sample scores
Sample size
Evaluating validity coefficient criterion meaning
What is the correlation with other tests measuring the same criteria are those test valid.
Predictive validity evidence
Is the test an adequate predictor of future attitudes and behaviours related to the contract
Concurrent evidence for validity
Is the test measuring the same contructs completed by the subject at the same time
Validity coefficient
What does it do and what decimal range is adequate?
What level of statistical significance?
The extent to which test is making meaningful statements about the criteria
Adequate coefficient PT .30 to .40
Statistically significant obtaining value is less than 5 in 100 F chance of obtaining value less than
Criterion referenced test
Students scores are compared to a standard that has been set
Can an unreliable test be valid
No validity and reliability are related
