In cognitive psychology, I've worked with a method known as "masked priming" [0], which is relatively well-known in the field to influence reaction times. React

In cognitive psychology, I've worked with a method known as "masked priming" [0], which is relatively well-known in the field to influence reaction times. Reaction time is a complex measure as it includes both "processing speed" as well as physical reaction times. The "prime" is considered subliminal, as one would not necessarily notice it being presented (although the mask definitely is noticeable). Interestingly, at short enough time scales, e.g. 16 ms duration times, the effect of the priming reverse, and it makes reaction times increase[1]. [0] http://www.u.arizona.edu/~kforster/priming/ http://www.u.arizona.edu/~kforster/priming/ [1] https://link.springer.com/article/10.3758%2FBF03196307 https://link.springer.com/article/10.3758%2FBF03196307