“Relationship between Levels of Giftedness and Psychosocial Adjustment”, 1999 (; backlinks; similar):
This study compares 2 groups of gifted students, highly (n = 74) and moderately (n = 163) gifted, on a number of scales including self-concept, emotional autonomy, and anxiety.
Although a measure of academic ability was used to create distinctive ability groups, the results did not support the hypotheses that highly gifted students would be more likely to display lower self-concepts and more adjustment problems than the moderately gifted group.
These findings are examined in light of past research on differences in highly and moderately gifted students.