varAV {psychometric}

Variance Due to Attenuating Artifacts

Description

Since the presence of artifacts may inflate the observed variance in correlations, one needs to compute the variance attributed to the artifacts.

Usage

varAV(x)

Arguments

x

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

Details

varAV is computed as \code{rhoCA}^2 * \code{CAFAA}^2 * \code{CVF}

varAV is used to compute the residual variance in correlations varResT

Value

A numeric value representing the variance due to attenuating artifacts

Author(s)

Thomas D. Fletcher [e-mail]

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

CAFAA,rhoCA, CVF

Examples

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

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