Visuospatial interpolation in typically developing children and in people with Williams Syndrome Palomares M et al. - Results suggest that in WS individuals, and in typically developing children, the grouping mechanisms that enable long-range spatial integration are immature. The authors hypothesize that WS individuals and young children can use stimulus-driven grouping cues for bottom–up integration, but have immature mechanisms for top–down integration of spatial information. [more...]