Factors affecting validity coeff Flashcards
1
Q
Ass between constructs
A
Effect stronger ass between construct to have stronger correlation and vice versa
2
Q
Random measurement error
A
More error=lower reliability=weaker correlation
3
Q
Restricted range
A
Artificially restricted range=weaker cor
Eg. 4 point GPA scale
4
Q
Skew and relative proportions
A
Differential skew = weaker possible cor
Eg. one normally distributed and one heavily left skewed; r=1 not possible.
5
Q
Method variance
A
Dissimilar methods = weaker cor
6
Q
Time
A
Greater time distance = weaker cor
7
Q
Prediction of single events
A
Singel events as criterion = weaker cor
