Collecting data over the internet used to be fancy, some twenty years or so ago. Nowadays it can be considered standard, if not old school (collecting data using mobile apps is where the cool kids go at the moment). However, there’s one noteable exception: Collecting reaction time data over the internet remained a challenge. The reason is simply a technological artefact in that an html response time may vary, vary too much as to invalidate the signal from some behavorial reaction time research …