Sluggish dorsally-driven inhibition of return during orthographic processing in adults with dyslexia

•Dyslexia is characterized not only by phonological but also orthographic deficits.•Orthographic processing assigns letter identities to different spatial locations.•Spatial location encoding is driven by the “where” dorsal-attentional stream.•Adults with dyslexia show impaired IOR during orthographic processing.•Adults with dyslexia show a “where” dorsal-attentional dysfunction.