FIG. 3.

(Color online) Summary of main effects and significant interactions in the model of reaction time. The top row of panels represent model coefficients for the main effects of attention (A), participant group (B), spatial condition (C), and timing slot (D). Panels (E)–(G) show interactions between timing slot and attention, participant group, and spatial condition (respectively). Panel (H) illustrates the significant four-way interaction, showing how reaction time in slot 4 of non-spatial switch-attention trials is longer for participants with listening difficulty than for age-matched controls. Lines on each plot connect EMMs for the various predictors; vertical error bars show 95% confidence intervals for the EMMs. * indicates p < 0.05, ** indicates p < 0.01, *** indicates p < 0.001.