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. Author manuscript; available in PMC: 2016 Sep 1.
Published in final edited form as: Psychol Aging. 2015 Aug 17;30(3):699–711. doi: 10.1037/pag0000043

Figure 5.

Figure 5

Results for interaction effects with interval of processing speed and IIV for the communications measure (top row), summary score (middle row) and approach measure (bottom row). Predictions are shown for an individual with low processing speed or IIV one SD below the mean (left column); with average (mean) processing speed or IIV (middle column); and with high processing speed or IIV one SD above the mean (right column) based on the values of a reference sample enrolled early in the study. Those with fast processing speed or low IIV are relatively unaffected by interval, whereas the deleterious effect of interval is evident in those with slow processing speed or high IIV.