Altus and other investigators have reported substantial evidence that, on the average,__________ children are brighter than other children.
A) first-born
B) middle
C) last-born
D) only

Question

Quizplus · Accepted Answer

Research has shown that first-born children tend to have higher IQs and perform better academically than their siblings. This is often attributed to the undivided attention and resources they receive from their parents before the arrival of subsequent children.

Altus and Other Investigators Have Reported Substantial Evidence That, on the Average,__________