The correlations of the Turkish CDQ with the SF-36, an HRQOL scale instrument validated in Turkish, were significant (Spearman correlation 0.61-0.93) and similar to the external validity coefficients of other validation studies of the CDQ [ 17, 19].
A review of the literature finds that relatively few studies report reliability or validity coefficients.
Correlational and regression analysis yielded generally low validity coefficients between social and academic intelligence except for the social memory tests.
Then, the reliability and validity coefficients of the data were calculated through Cronbach's alpha and factor analysis, respectively.
Studies on reliability and convergent should be designed in such a way that it is realistic to expect high reliability and validity coefficients.
Significant concurrent validity coefficients with anxiety measures were in the moderate range (r = 0.32 and 0.40) and are comparable to other similar studies.
Convergent validity coefficients in the.40 to.60 orangeto.70 range should be considered as indications of validity problems, or as inconclusive at best.
Self-assessment is considered a viable alternative to formal second language assessment for placement and criterion-referenced interpretations, although variation in self-assessment validity coefficients suggests potential difficulty in accurate interpretation (Ross 1998).
Outcome measures: Studies were required to report: reliability coefficients (intraclass correlation coefficient, alpha reliability coefficient, limits of agreements and Bland-Altman plots); validity coefficients (intraclass correlation coefficient, Spearman's correlation, Kendal T coefficient, Pearson's correlation); or dropout rates.
But, the validity coefficients actually drop with more reviews per manuscript.
The resulting validity coefficients (Spearman's rank-order correlations) are rxy = .34 (with one review), rxy = .26 (with two reviews), and rxy = .17 (with three reviews).
