Bài ôn tập số 1

Some believe that these differing personality types occur because of differences in families over time. Firstborn children join families with few other distractions and they receive their parents' full attention until their next sibling arrives. Later, children do not get to experience a similar period of undivided attention from their parents. This may make it seem that the benefits of higher birth order decrease when a second child is born, but this is not true. While they must now share parental attention with another child, the mentoring and assistance that firstborn children provide to their younger siblings can lead to more substantials development of the brain - likely the cause of their higher IQs. Furthermore, this helps younger siblings achieve better grades in academic coursework.

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