Which birth order finding shows a reasonable amount of consistency across research studies?

Question

Quizplus · Accepted Answer

The finding that lastborn children tend to be higher in agreeableness compared to their siblings shows a reasonable amount of consistency across research studies. This has been found in several studies, although there may be some variation in the degree of difference between lastborn and other siblings, and there are some exceptions to this trend.

Which Birth Order Finding Shows a Reasonable Amount of Consistency