Figure 1.
Sematic diagram of a typical trial during the blind choice task.
Participants were required to press a key to initiate a trial (A), followed by a presentation of fixation for 1 s (B). Next, two identical dummy faces were presented for 10 ms (C) and followed by masking stimuli presented for 1 s (D). After the dummy faces were presented, participants were asked to respond in accordance with an instruction (e.g., “CHOOSE” represents to choose a preferred face). Once completed the response, target faces were presented (F). Note that participants were instructed that target faces were presented two times within a trial, one in C and another in F.
Figure 2.
Post-choice change in preference in Experiments 1 and 2.
Change in preference ratings for chosen and unchosen facial stimuli after a blind choice between two equally preferred faces in Experiment 1 (choice of a preferred face between two alternatives) and Experiment 2 (choice of an unpreferred face between two alternatives). Bars indicate differences in mean-corrected ratings between the pre- and post-choice rating tasks. Error bars represent standard errors (SE) of the mean.
Figure 3.
Post-choice change in preference in Experiment 3.
Change in preference ratings for chosen and unchosen facial stimuli after a blind choice between two equally preferred faces in the ‘preference judgment’ trials (choice of a preferred face between two alternatives) and the ‘roundness judgment’ task (choice of a rounder face between two alternatives) in Experiment 3. Bars indicate differences in mean-corrected ratings between the pre- and post-choice rating tasks. Error bars represent standard errors (SE) of the mean.
Figure 4.
Post-choice change in preference in Experiment 4.
Change in preference ratings for chosen and unchosen facial stimuli after blind choice between two equally preferred faces in the Experiment 4 (choice of a preferred face between two alternatives). Note that participants rated their preference for faces after they explicitly knew that their choices had been actually random. Bars indicate differences in mean-corrected ratings between the pre- and post-choice rating tasks. Error bars represent standard errors (SE) of the mean.