| SATcoaching {clubSandwich} | R Documentation |
Randomized experiments on SAT coaching
Description
Effect sizes from studies on the effects of SAT coaching, reported in Kalaian and Raudenbush (1996)
Usage
SATcoaching
Format
A data frame with 67 rows and 11 variables:
- study
Study identifier
- year
Year of publication
- test
Character string indicating whether effect size corresponds to outcome on verbal (SATV) or math (SATM) test
- d
Effect size estimate (Standardized mean difference)
- V
Variance of effect size estimate
- nT
Sample size in treatment condition
- nC
Sample size in control condition
- study_type
Character string indicating whether study design used a matched, non-equivalent, or randomized control group
- hrs
Hours of coaching
- ETS
Indicator variable for Educational Testing Service
- homework
Indicator variable for homework
References
Kalaian, H. A. & Raudenbush, S. W. (1996). A multivariate mixed linear model for meta-analysis. Psychological Methods, 1(3), 227-235. doi:10.1037/1082-989X.1.3.227