Table 2.
Codebook of mouse-tracking, timing, and computing system variables in raw Qualtrics data
| Variable | Units | Meaning |
|---|---|---|
| xPos | px | x-coordinate of cursor relative to upper left-hand |
| corner of browser window | ||
| yPos | px | y-coordinate of cursor relative to upper left-hand corner |
| time | ms since 1970-01-01 | Time at which each coordinate pair was measured |
| 0:00:00 UTC | ||
| onLoadTime | ms since 1970-01-01 | Time at which page for each trial started loading |
| 0:00:00 UTC | ||
| onReadyTime | ms since 1970-01-01 | Time at which the page for each trial was loaded |
| 0:00:00 UTC | (beginning of trial) | |
| buttonClickTime | ms since 1970-01-01 | Time at which subject made category decision |
| 0:00:00 UTC | (end of trial) | |
| pageSubmitTime | ms since 1970-01-01 | Time at which subject proceeded to next trial by |
| 0:00:00 UTC | clicking “Next” | |
| windowWidth | px | Width of subject’s browser window at beginning of trial |
| windowHeight | px | Height of subject’s browser window at beginning of trial |
| alerts | N/A | Alerts received during each trial: |
| 0 = none | ||
| 1 = started too early | ||
| 2 = started too late | ||
| 3 = surpassed time limit for trial | ||
| 4 = window too small to fully display experiment | ||
| latency | ms | Time between onReadyTime and first mouse move |
| stimulusOrder | N/A | Stimulus URLs for each trial in the order presented to |
| subject | ||
| browser_Browser | N/A | Internet browser |
| browser_Version | N/A | Browser version |
| browser_Operating.System | N/A | Operating system |
| browser_Resolution | N/A | Browser resolution |