Does the classic flanker task miss the target? Adding spatial jitter reveals a doubling of effect size.

The Flanker task aims to capture fundamental aspects of selective visual attention. Yet the traditional, common version of the paradigm presents all stimuli at the fixated center of the page. This presentation only consider “static” selectivity (selective attention to a single, stable, fixated location), ignoring the more ecologically valid question of “dynamic” selectivity (selectivity for newly acquired stimuli at shifting locations). To investigate the Flanker effect in a more ecologically valid “dynamic” scenario, we therefore