Autism & Developmental

Technological aids to support choice strategies by three girls with Rett syndrome.

Stasolla et al. (2015) · Research in developmental disabilities 2015
★ The Verdict

A cheap photocell turns a light-break into a reliable "I want" for girls with Rett syndrome and cuts hand-wringing at the same time.

✓ Read this if BCBAs and RBTs working with Rett syndrome or other profound motor limits in school or day-program settings.
✗ Skip if Clinicians whose caseloads already use high-end eye-gaze or SGD systems with no problem.

01Research in Context

01

What this study did

Stasolla et al. (2015) worked with three girls who have Rett syndrome.

The team set up photocells linked to a laptop.

Breaking the light beam counted as a choice and turned on a preferred video or song.

Sessions were run at the girls’ desks during regular school hours.

02

What they found

All three girls used the beam more often as the days went on.

Stereotypic hand-wringing dropped during the same periods.

Observers also rated the girls as happier while the tech was in use.

03

How this fits with other research

Lancioni et al. (2011) first showed the same photocell setup works for adults with multiple disabilities.

The 2015 study copies that layout and shows it also helps girls with Rett syndrome.

Austin et al. (2015) added posture control to the same tech package.

Their adults sat straighter, but the girls here cut stereotypy instead; the method is flexible.

Walsh et al. (2020) later moved the idea into job sites, letting adults with autism pick preferred work tasks.

Together the papers form a line: light-beam choice first, then add posture or vocational goals.

04

Why it matters

If you serve non-speakers with profound motor limits, a $10 photocell can open choice today.

No complex eye-gaze gear is needed.

Try taping a beam across a favorite toy and let the break equal "yes."

You may see less stereotypy and more smiles while you plan next steps.

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→ Action — try this Monday

Tape a break-beam sensor to a desk edge, link it to a 10-second YouTube clip, and count breaks as choice responses during one preferred activity.

02At a glance

Intervention
augmentative alternative communication
Design
single case other
Sample size
3
Population
developmental delay
Finding
positive

03Original abstract

This study was aimed at extending the use of assistive technology (i.e., photocells, interface and personal computer) to support choice strategies by three girls with Rett syndrome and severe to profound developmental disabilities. A second purpose of the study was to reduce stereotypic behaviors exhibited by the participants involved (i.e., body rocking, hand washing and hand mouthing). Finally, a third goal of the study was to monitor the effects of such program on the participants' indices of happiness. The study was carried out according to a multiple probe design across responses for each participant. Results showed that the three girls increased the adaptive responses and decreased the stereotyped behaviors during intervention phases compared to baseline. Moreover, during intervention phases, the indices of happiness augmented for each girl as well. Clinical, psychological and rehabilitative implications of the findings are discussed.

Research in developmental disabilities, 2015 · doi:10.1016/j.ridd.2014.09.017