Processing head fakes in basketball: Are there ironic effects of instructions on the head-fake effect in basketball?

Instructions in sports are used to improve athletes' performance. However, instructions can also impair performance if they direct athletes' attention to a to-be-avoided behavior which paradoxically provokes exactly that behavior (ironic effect). The present study investigates the impact of different instructions on the head-fake effect in basketball. Specifically, we asked here if deliberate attempts to ignore the deceptive cues gaze direction and head orientation increase the impact of that information and thus, paradoxically increase the head-fake effect. We found that the detrimental impact of spatially incongruent gaze direction and head orientation was essentially independent of whether participants were, or were not, instructed to deliberately ignore the task-irrelevant information. Hence, deceptive actions exert their impact independent of the perceivers' attempts to ignore deceptive cues. We thus conclude that the deceptive cues gaze direction and head orientation are per se hyper-accessible or over-salient and its processing cannot be controlled with any amount of mental capacity (and even not with the non-ironic instruction). However, as both ignore instructions produce general processing costs (i.e., slower reactions) coaches should solely instruct athletes' to focus attention on the processing of the pass direction.