Spatial Addition Subtest (WMS-IV)

**Semantic type:** Intellectual Product

**Definition:** A subtest of the Wechsler Memory Scale, 4th Edition that evaluates visual-spatial working memory using a visual addition task. The subject is shown, sequentially, two grids with blue and red circles. The subject is then asked to add or subtract the location of the circles based on a set of rules.

**Synonyms:** - Spatial Addition - WMS-IV Spatial Addition