According to the fraternal birth order effect, which of the following is the most likely to be homosexual?
A) Brett, the first born of five male children
B) Geoff, the last born of five male children
C) Esther, the first born of two female children
D) Lisa, the last born of five female children

Question

Quizplus · Accepted Answer

The fraternal birth order effect posits that the more older brothers a male has, the more likely he is to be homosexual. As Geoff is the last born of five male children, he has the highest likelihood of being homosexual. The birth order of females is not typically associated with the fraternal birth order effect.

According to the Fraternal Birth Order Effect, Which of the Following