selective attention as tuning the case of stroke weight it has long been demonstrated that when grouping occurs attention transfer between grouped elements is facilitated as compared with attention transfer between elementssimilarly distantthat are not grouped this has been shown for grouping by connectedness by orientation and by color the present article extends these findings to the case of similarity in coarseness by using spatial cuing to elements drawn with different strokes it is shown that the visual processing of elements that sharestroke heaviness with the cued element is more efficient than that of elements that do not three experiments in which cue validity regarding the targets location andor its stroke is manipulated show that the facilitation has both an endogenous and an exogenous component the findings are discussed in terms of visual tuning to the features of a stimulus with tuning being the initial stage of visual processing required for identification and discrimination it is proposed that grouping rather than explaining the facilitation observed can be explained by the notion of visual tuning to features the findings also point to potential methodological pitfalls when different stroke weights are used unintentionally in visual displays