fetal alcohol syndrome or malnutrition, sensory impairment, history of traumatic brain injury with loss of consciousness exceeding 10 minutes, presence of diseases that may affect the CNS (e.g., meningitis, epilepsy, HIV), less than 6 years of formal education, and lack of proficiency in English or Afrikaans. Collateral information verifying the absence of medical, psychiatric and psychosocial problems was obtained from consenting parents by a social worker at the consent-explanation interview. Verification of regular school attendance was obtained from school reports, and school teachers were consulted at pre-screening interviews conducted by a social worker to verify whether participants’ behaviour and performance at school were considered to be within normal parameters. Participants in the AD (n = 26) and control (n = 26) groups were individually matched for age (within 1 year), gender, language, socio-economic status, and level of education (within 1 year). The mean age of the sample was 14.5 years (±0.6) and they had completed 8.0 years (±0.9) of education. Females (62%) outnumbered males (38%), and the majority of the sample were right handed (92%) and Afrikaans-speakers (88%) (see Table 1).
