Figure 1.

Example stimuli and task structure for the Symbol Decision Task (SDT; A) and Lexical Decision Task (LDT; B). For the SDT, participants made yes/no decisions whether symbol strings, presented horizontally and vertically, contained two of the same symbol (match) or not (no-match), with a central fixation cross between each trial. For the LDT, participants made yes/no decisions whether letter strings, presented horizontally and vertically, were real words or non-words, with a central fixation cross between each trial.