This replication study with 96 highly gifted and 192 less gifted control subjects (all 12 years old) found the highly gifted (students with extremely high scores on the Scholastic Aptitude Test) were disproportionately male. It did not find that the highly gifted were more likely to be left handed or to have allergies. (Author/DB)

A study of the relationship between presence or absence of sleep deprivation, allergy symptoms, and the rate and function of problem behavior in three adolescents with moderate to profound mental retardation found that problem behavior was negatively reinforced by escape from instruction, and both allergy symptoms and sleep deprivation influenced…