Recollection selectivity and working memory capacity (WMC).

<p>Both plots illustrate ERP old/new effects for Target Hits and Non-target CR (i.e., ERPs elicited by each condition after subtraction of ERPs elicited by New CR) at the P5 electrode site in the 500–600 ms time window. (A). Mean amplitudes (and standard errors) of Target and Non-target old/new effects according to age group, in microvolts. The young group are divided into high-WMC and low-WMC sub-groups, based on a median split (see ERP results). (B) Associations between WMC (<i>x</i>-axis) and the ERP index of recollection selectivity: the difference in magnitude between target and non-target old/new effects (Target old/new effect—Non-target old/new effect in microvolts; <i>y</i>-axis). Individual data points correspond to participants, and lines show the linear regression fits within age groups. See Standardized cognitive tests for details of O-Span measures and ERP results for details of ERP measures.