The parental SDQ score will serve as the primary outcome measure to determine the sample size. For a 3-point decrease in the SDQ total score, given a standard deviation (SD) of the SDQ of 6 points (an effect size of 0.5), at alpha = 0.05 (two-sided) and beta = 0.20, 63 children need to be included in each group (SSTP and CAU). With adjustment for a ‘loss to follow-up’ of about 40%, 210 children need to be included in the study, 105 children in each treatment condition. Parents will be included if their child has an SDQ total problems score of 14 or higher. The prevalence rate of an SDQ ≥ 14 among children who are not under current treatment for their mental health problems is estimated at 55% [2]. Therefore, (2 × 105)/55% = 381 children with mild ID aged 5-12 years are required. Adjusting for 30% refusal to participate and 10% incomplete SDQs, 635 parents will have to fill in the SDQ.