There's no replication crisis in behavioral genetics!

Plomin et al. say, "Deal with it."

"The most important reason for the reproducibility of

behavioral genetic results is that genetic effect sizes are

large. Heritability estimates for behavioral traits, typically

between 30% and 50%, are by far the largest effect sizes

in psychological science. What other findings in psychological

science account for 5% of the variance, let alone

50%? Consider sex differences as one of countless examples.

Although thousands of articles have reported significant

sex differences in psychological traits, a general

rule is that sex differences account for less than 1% of the variance (Hyde, 2014)."

Top 10 Replicated Findings from Behavioral Genetics

Finding 1. All psychological traits

show significant and substantial

genetic influence

Finding 2. No traits are 100%

heritable

Finding 3. Heritability is caused by

many genes of small effect

Finding 4. Phenotypic correlations

between psychological traits show

significant and substantial genetic

mediation

Finding 5. The heritability of

intelligence increases throughout

development

Finding 6. Age-to-age stability is

mainly due to genetics

Finding 7. Most measures of the

“environment” show significant

genetic influence

Finding 8. Most associations between

environmental measures and

psychological traits are significantly

mediated genetically

Finding 9. Most environmental effects

are not shared by children growing up

in the same family
Finding 10. Abnormal is normal