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Presumably, if the primary effect is having a slightly lower kid around, then younger siblings would also tend to outperform only children, or those with a suff
by rflrob 13y ago
Presumably, if the primary effect is having a slightly lower kid around, then younger siblings would also tend to outperform only children, or those with a sufficiently large gap to the next older sibling. Anyone know if there's any research on this?
- disgruntledphd2 13y agoIn terms of birth order and IQ, the results show the opposite actually. Oldest children tend to have higher IQ's than their siblings, with the exception of youngest children when there's a large gap, who also show increased IQ.