Procedure
Written consent was obtained after explaining the procedure. The experimenter introduced the task by explaining that the participant would see a series of faces on the screen, and that the participant’s task would be to press one of the three buttons on the keyboard to indicate whether the model appeared to be looking at the participant, or away from the participant to the left or right. The participant then initiated practice trials. At the start of each trial, the words, ‘‘Press spacebar to continue.’’ appeared at the centre of the screen. When the participant pressed the spacebar, an image of one of the faces appeared. After 500 ms, the image disappeared and was replaced by the words, ‘‘Where was that person looking?’’, which remained on the screen until the participant pressed one of the three response keys.1 When the participant met the 75 % accuracy criterion on the practice block, the experimenter initiated test trials. Test trials had the same format as practice trials except for the absence of feedback. Participants typically completed each test block in approximately 10 min and completed the entire procedure in approximately 30 min.