Effects of low-intensity behavioral treatment for children with autism and mental retardation.
Twelve hours of ABA beats mixed care but gives only tiny, maybe meaningless gains—more hours or parent help is needed for real change.
01Research in Context
What this study did
The team asked: can kids with autism and intellectual disability still make progress with only 12 hours of ABA each week?
They compared two groups of children. One group got low-intensity ABA. The other got an eclectic mix of speech, play, and school help.
After one year they measured IQ, language, and daily-living skills.
What they found
The low-intensity ABA group scored a little higher on tests, but the gains were small.
Most kids still stayed far behind typical peers. The change may not matter in real life.
How this fits with other research
Eikeseth et al. (2002) ran almost the same study but gave 28 hours a week. Those kids made big jumps. The 2006 trial cut the dose in half and the payoff shrank, showing hours matter.
Reichow (2012) pooled five meta-analyses and found EIBI works best at full dose. The 2006 data sit right inside that trend.
Strydom et al. (2020) looks like a clash: adult PBS showed zero benefit while this child low-intensity ABA showed small gains. Age and setting explain the gap, not a true contradiction.
Why it matters
If a family can only get 12 hours, low-intensity ABA still beats eclectic care, but set expectations low. Push for more hours or add parent coaching to stretch the dose. Use brief pre-post checks every three months; if gains stall, re-budget for intensity or mix in targeted PBS for problem behavior.
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02At a glance
03Original abstract
We retrospectively compared 2 groups of children receiving either behavioral treatment (n = 13) or eclectic treatment (n = 15) for an average of 12 hours per week. Children were assessed on intelligence, language, adaptive functioning and maladaptive behavior at pretreatment and 2 years into treatment. The groups did not differ significantly at pretreatment. After 2 years of treatment, the behavioral group made larger gains than the eclectic group in most areas. However, gains were more modest than those reported in previous studies with children receiving more intensive behavioral treatment, and it is questionable whether they were clinically significant.
Journal of autism and developmental disorders, 2006 · doi:10.1007/s10803-005-0058-x