| brainvol {metaviz} | R Documentation |
Example data for a meta-analysis of correlations: Human brain volume and intelligence
Description
A dataset consisting of 83 empirical studies used in the meta-analysis of Pietschnig, Penke, Wicherts, Zeiler, and Voracek (2015) on the associations between human brain volume and intelligence (measured full-scale IQ) in healthy participant samples.
Usage
brainvol
Format
A data frame with 83 rows and 8 variables:
- study_name
short name of each study
- year
publication year of each study
- r
observed correlations between intelligence and brain size
- z
Fisher's z transform of the observed correlations for meta-analysis
- z_se
Standard error of Fisher's z transformed observed correlations for meta-analysis
- n
sample size of each study
- sex
categorical moderator variable: gender of the participants in each study
- mean_age
continuous moderator variable: mean age of all participants in each study
References
Pietschnig, J., Penke, L., Wicherts, J. M., Zeiler, M., & Voracek, M. (2015). Meta-analysis of associations between human brain volume and intelligence differences: How strong are they and what do they mean?. Neuroscience & Biobehavioral Reviews, 57, 411-432.