May suggest difficulties in visuospatial processing, constructional dyspraxia, or impaired nonverbal reasoning. Clinically, low scores are associated with:
To the uninitiated, they looked like a game. To Thorne, they were a precision instrument, a way to X-ray the parietal lobes without breaking the skin. The Block Design subtest was the heavy lifter of the Performance IQ scale. It demanded non-verbal reasoning, spatial visualization, motor coordination, and the ability to synthesize parts into a whole. It was the purest measure of fluid intelligence—the ability to solve novel problems in real-time.
The test uses a standardized set of and a series of two-dimensional designs provided in a stimulus book. block design wais
They moved through the designs. The jagged diagonal. The checkerboard. The difficult asymmetrical patterns that required mental rotation.
"Let’s try another," Thorne said. He placed a new card down. This one was complex—a jagged arrangement of red and white triangles forming a diagonal slash across a square. It required four blocks. The Block Design subtest was the heavy lifter
A perfect match.
People with autism often excel at this test because they can easily see the individual blocks rather than just the overall pattern. The test uses a standardized set of and
: The capacity for logical reasoning and solving novel problems regardless of prior knowledge.