Route learning and shortcut performance in adults with intellectual disability: a study with virtual environments.
Adults with intellectual disability can memorize routes yet usually fail at novel shortcuts, so teach flexible wayfinding rather than fixed sequences.
01Research in Context
What this study did
Mengue-Topio et al. (2011) asked adults with intellectual disability to walk virtual routes. They then tested whether the adults could cut a brand-new shortcut.
A control group of neurotypical adults did the same tasks. The team watched who memorized the route and who could bend it into a fresh path.
What they found
All adults with ID could learn the given route. Yet most could not create the shortcut when the usual path was blocked.
Some people with ID did succeed, but scores spread wide. The finding shows rote learning stays intact while flexible mapping lags.
How this fits with other research
Bleyenheuft et al. (2013) ran the same virtual maze with adults who have Down syndrome. They saw the same split: good route memory, poor shortcuts. The pair of studies forms a clean replication.
Højberg et al. (2023) looks opposite at first glance. Their adults with DS improved a visuomotor game and kept the gain for a week. The gap is about task type: hand-eye skill learning stayed strong, but spatial flexibility still faltered.
Purcell et al. (2011) adds a safety angle. Kids with DCD misjudged traffic gaps, just as adults with ID misjudge spatial gaps. Both groups need real-world navigation training, not just repeated practice.
Why it matters
Stop drilling the same hallway walk. Start teaching learners to pick alternate paths and check new landmarks. Ask clients to draw the area map, point to blocked exits, and verbalize two ways to the goal. These steps build flexible wayfinding instead of brittle route scripts.
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02At a glance
03Original abstract
The ability to learn routes though a virtual environment (VE) and to make a novel shortcut between two locations was assessed in 18 adults with intellectual disability and 18 adults without intellectual disability matched on chronological age. Participants explored two routes (A ⇔ B and A ⇔ C) until they reached a learning criterion. Then, they were placed at B and were asked to find the shortest way to C (B ⇔ C, five trials). Participants in both groups could learn the routes, but most of the participants with intellectual disability could not find the shortest route between B and C. However, the results also revealed important individual differences within the intellectual disability group, with some participants exhibiting more efficient wayfinding behaviour than others. Individuals with intellectual disability may differ in the kind of spatial knowledge they extract from the environment and/or in the strategy they use to learn routes.
Research in developmental disabilities, 2011 · doi:10.1016/j.ridd.2010.10.014