They did look at task performance, it's just the oral breathing being marginally quicker and marginally less accurate wasn't statistically significant. If ther

They did look at task performance, it's just the oral breathing being marginally quicker and marginally less accurate wasn't statistically significant. If there's no difference in task performance, an alternative explanation is that for the nasal breathing test participants wasted cognitive cycles on remembering to keep their mouth closed (versus oral breathing participants who had their nose plugged)...