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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Atten Percept Psychophys. 2016 Jan;78(1):218–241. doi: 10.3758/s13414-015-0988-0

Figure 1.

Figure 1

AX-Continuous Performance Task. Participants are presented with sequences of red letters, and are required to press a specific key (the “YES” key) if and only if the letter presented is a red “X” AND the previous red letter was an “A”. In all other situations (e.g., the letter that is presented is not a red “X”, or the letter is a red “X” but the previous red letter was not an “A” ), participants are to press a different key (the “NO” key). There were two experimental conditions: the “no distractors” condition (top panel) and the “distractors” condition (bottom panel). The latter differed from the former by the presentation of three white letters—the distractors—sandwiched between red letters. Participants were to press the “NO” key in response to each of these distractor elements.