First-born children tend to have higher IQs because they receive more parental attention than their later-born siblings.

Question

Quizplus · Accepted Answer

This is a commonly accepted theory known as the "birth order effect." The first-born child typically receives more one-on-one attention from parents in their early years, which can positively impact their cognitive development and result in higher IQ scores. However, it's important to note that this is not a universal rule and there are many other factors that can impact a child's intelligence.

First-Born Children Tend to Have Higher IQs Because They Receive