psychometric (version 2.4)

pvaaa: Percent of Variance Accounted for by Artifacts in Rho

Description

Computes the percentage variance attributed to attenuating artifacts (sampling error, restriction of range, reliability in predictor and criterion.

Usage

pvaaa(x, aprox = FALSE)

Value

A numeric value representing the percent of variance accounted for by artifacts

Arguments

x

A matrix or data.frame with columns Rxy, n and artifacts (Rxx, Ryy, u): see EnterMeta

aprox

Logical test to determine if the approximate or exact var e is used

Author

Thomas D. Fletcher

Details

Percent of variance is computed as: ( vare + varAV ) / varr * 100

References

Arthur, Jr., W., Bennett, Jr., W., and Huffcutt, A. I. (2001) Conducting Meta-analysis using SAS. Mahwah, NJ: Erlbaum.

Hunter, J.E. and Schmidt, F.L. (2004). Methods of meta-analysis: Correcting error and bias in research findings (2nd ed.). Thousand Oaks: Sage Publications.

Hunter, J.E., Schmidt, F.L., and Jackson, G.B. (1982). Meta-analysis: Cumulating research findings across studies. Beverly Hills: Sage Publications.

See Also

vare, varAV, varr, pvse

Examples

# From Arthur et al
data(ABHt32)
pvaaa(ABHt32)

# From Hunter et al
data(HSJt35)
pvaaa(HSJt35)