The Wikipedia page on introversion and extraversion cites a couple studies suggesting a link between introversion and intelligence/​giftedness, such as this study.
A bit more Googling lead me to a study using Big Five extraversion finds that the relationship might be more complex.
The Wikipedia page on introversion and extraversion cites a couple studies suggesting a link between introversion and intelligence/​giftedness, such as this study.
A bit more Googling lead me to a study using Big Five extraversion finds that the relationship might be more complex.