A-55 Updated validation of the accuracy of reaction time assessment on computer-based tablet devices.

This article focuses on evaluating the timing accuracy of touchscreen devices for computer-based assessments, updating previous research from 2015. Using a custom timing device and Javascript timer, the study measured delays between stimulus presentation and simulated touch responses on an Acer Chromebook, Apple iPad, Kindle Fire HD 10, and Samsung Galaxy A7 across various response intervals. Results indicated that the Chrome browser was generally the fastest, with the Samsung tablet exhibiting the greatest timing errors (88-105 ms), followed by the Kindle Fire, Apple iPad, and Acer Chromebook. The study concludes that touchscreen devices are not recommended for simple reaction time (RT) collection, but for choice RT measures, Safari on Apple iOS devices and Chrome on Chromebooks or Kindle Fire are preferable, while Samsung Galaxy tablets and Kindle Fire using the Silk browser are not recommended.