Raven's Coloured Progressive Matrices as a measure of cognitive functioning in Cerebral Palsy.

The team gave Raven's Coloured Progressive Matrices to clients with severe cerebral palsy. No talking is needed for this test; clients just point to the missing piece.

They checked whether the scores matched other brain skills like visuoperceptual tasks, language tests, and memory games.

Scores on the Raven did link up with visuoperceptual, language, and memory scores. The test gave a quick, speech-free snapshot of cognitive level.

That means you can screen thinking skills even when speech or motor problems make normal IQ tests impossible.

Laposa et al. (2017) and Perez et al. (2015) did the same kind of work for movement tests. They showed that tweaking the GMFM-88 for kids who also have visual impairment gives higher, more accurate gross-motor scores. Together these papers tell a simple story: when you adapt a standard tool for the client’s real limits, you get data you can trust.

Hattier et al. (2011) did something similar with the Berg Balance Scale for clients who have both severe intellectual disability and visual problems. They got excellent reliability after small wording and setup changes. The Raven study joins this family by proving the same principle works for cognition.

None of these papers clash; they just apply the “modify for reality” rule to different domains—balance, gait, or thinking.

If you work with non-speaking clients who have severe CP, you can swap in Raven’s Coloured Progressive Matrices for a fast cognitive screen. It takes ten minutes, needs no verbal answer, and the score still tells you about language, memory, and visuoperceptual skills. Use the result to set realistic goals, choose AAC devices, or show insurance why more services make sense.