Figure 1.

Keystroke metrics. Panel A illustrates the frequency distribution of interkey delay (latency between consecutive keypresses) during transitions between alphanumeric characters in a sample typing session, with the blue dotted line denoting the median. Given the skewness of interkey delay, the median value is used to represent typing speed for each typing session. Median absolute deviation is used to represent variability in typing speed. Panel B illustrates rates of autocorrection and backspace in a sample typing session. In multilevel models, rates of autocorrection and backspace are represented with the total number of autocorrection events and backspaces used as the outcomes and offset by a log-transformed character count for each typing session.