Service Delivery

Active support: a systematic review and evidence-based practice evaluation.

Hamelin et al. (2011) · Intellectual and developmental disabilities 2011
★ The Verdict

Active support lifts engagement a bit, yet the proof is too thin to call it evidence-based.

✓ Read this if BCBAs who supervise group homes or day programs for adults with IDD.
✗ Skip if Clinicians focused only on pediatric clinics or outpatient ABA.

01Research in Context

01

What this study did

The authors hunted for every experiment that tested active support.

They screened studies where staff helped adults with intellectual or developmental disabilities take part in home activities.

Only three experiments met the rules; the team then graded how strong the proof was.

02

What they found

One study showed a clear link between active support and more resident engagement.

The other two showed tiny, up-and-down gains.

Because the effects were small and shaky, the reviewers said the label “evidence-based practice” cannot yet stick.

03

How this fits with other research

Moss et al. (2009) pooled 55 staff-training studies and found big gains when lecture was paired with on-the-job coaching.

That meta-analysis sits inside the same evidence lake Diz et al. (2011) drew from, yet the single active-support trials still looked weak.

Yaw et al. (2014) later showed that one hour of lecture plus feedback doubled staff data accuracy—again proving lecture-plus-feedback works, but also showing single-case staff studies often produce strong, clean results.

The contrast is striking: single-case staff training can yield clear effects, so the puny results seen in active-support experiments are not just “small samples”—they may signal the intervention itself needs sharper definition.

04

Why it matters

If you run residential services, keep using active support as a promising frame, but measure every step.

Track engagement minute-by-minute and add on-the-job coaching plus feedback—the combo the wider literature already backs.

Until larger, cleaner studies arrive, treat active support like a working hypothesis, not a settled brand.

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02At a glance

Intervention
other
Design
systematic review
Population
intellectual disability, developmental delay
Finding
weakly positive
Magnitude
small

03Original abstract

Researchers have evaluated active support in agencies for persons with developmental disabilities to increase staff assistance and service user engagement. A systematic review identified two studies in which researchers reported three experimental evaluations of active support. Only one experiment showed a clear functional relationship between active support with "ineffective" to "questionable" percentage of nonoverlapping data points effect sizes and acceptable percentage of all nonoverlapping data points effect sizes. Two experiments did not show experimental control; however, there was evidence that the investigators in these studies did not sufficiently manipulate the independent variable. Based on these data, active support only meets Chambless and Hollon's (1998) criterion for a "promising treatment" but not an evidence-based practice. Future research on active support should demonstrate that the experimenter manipulated the independent variable and reported data on individual participants.

Intellectual and developmental disabilities, 2011 · doi:10.1352/1934-9556-49.3.166