Figure 6

Predicted values (in percent) of correct responses in the n-back task as indicator of performance.
(a) For scores of 1 SD above the mean and −1 SD below the mean on need for cognition (NFC), assessed by the 18-item need for cognition scale. (b) For scores of +1 SD above the mean and −1 SD below the mean on working memory capacity, assessed by three tasks from the Wechsler Adult Intelligence Scale. Error bars indicate 95%-confidence intervals.