FIGURE 3.

Illustration of a three-Match trial run: (A) Unpredictable, where digits appeared in a random color sequence, (B) Predictable, where the digits appeared in the same color for two consecutive trials. The first three trials were “encoding only” trials where no response was required, because there were no prior trials to compare with. The subsequent trials required responses. “Blank” represents a black screen presented for 300 ms to allow for distinction between two consecutively presented same-colored digits of equal identities.