Can We Prepare to Negate? Negation as a Reversal Operator.

Negation is a critical cognitive operator that is investigated across a wide range of psychological phenomena (e.g., language, eating control, emotion control, stereotype processing). A core function of negation is reversing input information. In the current study, we investigated whether this reversing process benefits from temporal preparation. In Experiment 1, participants were first presented with either the negator "not" or the affirmative counterpart "now", and in a variable delay with the response indicating stimulus "left" or "right". Participants had to respond according to phrase meaning (e.g., "now right" ➔ right response; "not right" ➔ left response). The results showed a persisting negation effect of 150 ms that did not reduce with preparatory time. In Experiment 2, we replicated this study using non-linguistic input information (i.e. crosses, tick-marks and arrows). Again, despite standard temporal preparation effects being present, the reversal process itself did not benefit from preparatory time. In summary, these experiments suggest that capacity demanding reversal processes are not eased if we know that a reversal process is coming up soon. This is particularly interesting, as in the current experiments a very basic binary negation paradigm was implemented. The implications of these results for models of negation processing are discussed.