title: Longitudinal study of achievement related to anxiety and extraversion.
mesh_terms: D000124:Achievement; D000293:Adolescent; D001007:Anxiety; D002648:Child; D005120:Extraversion, Psychological; D005260:Female; D006801:Humans; D007361:Intelligence Tests; D008297:Male; D010552:Personality Assessment; D012737:Sex Factors; D013997:Time Factors