et al., 2005; Nieuwenhuis et al., 2001; Scheffers & Coles, 2000), the WIT was modified here such that participants rated their perception of the accuracy of their response on each trial (immediately after their response) using one of three response keys, labeled “sure correct,” “don’t know,” and “sure incorrect,” respectively (see Payne, Shimizu, & Jacoby, 2005). After the accuracy judgment response, a randomly varying intertrial interval (1,000, 1,250, or 1,500 ms) elapsed before the onset of the next trial.
