Next level #psychometrics.
So you've all heard of measurement invariance for IQ tests by race and sex, but have you heard of measurement invariance by ... zygosity in twin studies?
https://www.cambridge.org/core/journals/twin-research-and-human-genetics/article/problems-with-using-sum-scores-for-estimating-variance-components-contamination-and-measurement-noninvariance/AEF956353522D13CECDDA5B74C66591C …pic.twitter.com/5xXH1U8Itd
