Figure 1.

Schematic illustration of a mouse-tracking trial: after clicking the start button, a face would be displayed and participants moved the mouse to select an interpretation of the emotional expression. One prediction (Hypothesis 1) is that maximum deviation (MD) from an idealized straight-line trajectory will be higher during positive versus negative interpretations for negatively biased participants and higher during negative versus positive interpretations for positively biased participants (i.e., MD is greater during non-modal versus modal response choices).