metaSEM (version 0.9.10)

HedgesOlkin85: Effects of Open Education Reported by Hedges and Olkin (1985)

Description

Effects of open education on attitude toward school and on reading achievement reported by Hedges and Olkin (1985).

Usage

data(HedgesOlkin85)

Source

Hedges, L. V., & Olkin, I. (1985). Statistical methods for meta-analysis. Orlando, FL: Academic Press.

Details

The variables are:

References

Cheung, M. W.-L. (2010). Fixed-effects meta-analyses as multiple-group structural equation models. Structural Equation Modeling, 17, 481-509.

Examples

data(HedgesOlkin85)

## Fixed-effects meta-analysis
summary( meta(y=cbind(d_att, d_ach),
              v=cbind(var_att, cov_att_ach, var_ach),
              data=HedgesOlkin85,
              RE.constraints=matrix(0, nrow=2, ncol=2)) )