AD (N=65; mean=404; SD=86; 95% CI=383-427) generated significantly longer latencies than the CP group (N=91; mean=338ms; SD=84; 95% CI=321 -355; t(154)=4.801;p<.0005; d=.77) and the naMCIs (N=46; mean=363ms; SD=62; 95% CI=346-381; t(109)=2.78;p=.006; d=.53). Here, CP is linked to Alzheimer disease.