The research itself does say “This finding contradicts lay beliefs and prominent scientific theories alike”¹, though “On the basis of the high statistical power

The research itself does say “This finding contradicts lay beliefs and prominent scientific theories alike”¹, though “On the basis of the high statistical power and the consistent results across samples and analytical designs, we must conclude that birth order does not have a lasting effect on broad personality traits outside of the intellectual domain.” (end of the abstract’s first paragraph https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4655522/#idm140683280904096title https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4655522/#idm140...). ¹Last sentence of §Significance https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4655522/#idm140683204164432title https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4655522/#idm140...