weightr (version 2.0.2)

dat.bangertdrowns2004: Studies on the Effectiveness of Writing-to-Learn Interventions

Description

Results from 48 studies on the effectiveness of school-based writing-to-learn interventions on academic achievement.

Usage

dat.bangertdrowns2004

Format

A data frame; for documentation, see dat.bangertdrowns2004 in Wolfgang Viechtbauer's R package metafor.

Details

This reproduced dataset and its documentation are credited to Wolfgang Viechtbauer and his metafor package (2010). Please see his package for details.

References

Bangert-Drowns, R. L., Hurley, M. M., & Wilkinson, B. (2004). The effects of school-based writing-to-learn interventions on academic achievement: A meta-analysis. Review of Educational Research, 74, 29-58.

Viechtbauer, W. (2010). Conducting meta-analysis in R with the metafor package. Journal of Statistical Software, 36(3), 1-48.

Examples

# NOT RUN {
dat.bangertdrowns2004

# Extracting the effect sizes and sampling variances:
effect <- dat.bangertdrowns2004$yi
v <- dat.bangertdrowns2004$vi

# The weight-function model with no mean model:
weightfunct(effect, v)

# The weight-function model with a mean model:
weightfunct(effect, v, mods=~dat.bangertdrowns2004$info)
# }