Abused, neglected children have lower IQ in teens

January, 2011

A large study has found significantly lower IQ in teenagers who have suffered abuse and/or neglect.

An Australian study of 3796 14-year-olds has found that those who had been reported as having suffered abuse or neglect (7.9%) scored the equivalent of some three IQ points lower than those who had not been maltreated, after accounting for a large range of socioeconomic and other factors. Abuse and neglect were independent factors: those who suffered both (and 74% of those who suffered neglect also suffered abuse) were doubly affected.

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