Mental rotation ability and everyday-life spatial activities in individuals with Down syndrome.
People with Down syndrome show steep, angle-dependent mental-rotation deficits that track with everyday spatial independence.
01Research in Context
What this study did
Chiara’s team gave mental-rotation puzzles to 28 people with Down syndrome. They also tested 28 typical people matched for age and sex.
Each person saw two pictures of the same object. One picture was turned 0°, 90°, or 180°. The person had to say if the pictures showed the same object or a mirror image.
The testers watched how accurate each group was and asked parents how often the person did everyday space tasks like setting the table or finding a room in a new building.
What they found
The Down syndrome group got many more answers wrong, especially when the object was turned 180°. Most could not do the flip at all.
Their error scores rose sharply as the angle got bigger. The typical group stayed near ceiling.
Lower rotation scores went hand-in-hand with lower fluid-intelligence scores and fewer real-life spatial activities.
How this fits with other research
Laugeson et al. (2014) saw the same pattern for executive skills: kids with Down syndrome scored far below mental-age peers on working-memory and planning games. Together the studies show that multiple thinking systems—space, memory, planning—lag in this population.
Vakil et al. (2012) found that older adults with Down syndrome lose balance and coordination faster than typical adults. Chiara’s results add a new piece: the loss includes the mind’s eye, not just body movement.
Lemons et al. (2015) gave good news: the Four Square Step Test is reliable for balance in children with Down syndrome. Their positive tool paper and Chiara’s negative ability paper are not a contradiction; they simply map different parts of the same slope—motor tests work, but scores will be low because the skills are genuinely weak.
Why it matters
When you see a client with Down syndrome struggle to turn a puzzle piece or find the correct restroom, it is not laziness. The 180° mental flip may be physically impossible for them right now. Start spatial tasks at 0° and 90° moves, use real objects, and celebrate small turns. Teach parents to practice rotation games at home—spinning a plate, sliding a couch—because every extra spatial minute links to higher daily independence later.
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Join Free →Place a familiar object on the table, show a photo of it turned 90°, and ask the client to match the real object to the picture—start small before you ask for a full flip.
02At a glance
03Original abstract
Although certain visuospatial abilities, such as mental rotation, are crucially important in everyday activities, they have been little explored in individuals with Down syndrome (DS). This study investigates: i) mental rotation ability in individuals with DS; and ii) its relation to cognitive abilities and to everyday spatial activities. Forty-eight individuals with DS and 48 typically-developing (TD) children, matched on measures of vocabulary and fluid intelligence, were compared on their performance in a rotation task that involved detecting which of two figures would fit into a hole if rotated (five angles of rotation were considered: 0°, 45°, 90°, 135°, 180°). Participants were also assessed on their visuospatial and verbal cognitive abilities, and on their parents and/or educators reports regarding their everyday spatial activities. Results showed that: (i) individuals with DS were less accurate in mental rotation than TD children, with larger differences between the groups for smaller angles of rotation; individuals with DS could not mentally rotate through 180°, while TD children could; (ii) mental rotation ability was related to fluid intelligence and to spatial activities (though other cognitive abilities are also involved in the latter) to a similar degree in the DS group and the matched TD children. These results are discussed with regard to the atypical development domain and spatial cognition models.
Research in developmental disabilities, 2018 · doi:10.1016/j.ridd.2017.10.019