lab.js
3 posts tagged with “lab.js”
Mouse-tracking in the browser: capturing cursor trajectories in a lab.js study
Mouse-tracking records the path of the cursor while a participant moves toward one of several response options, so that a choice can be studied as it develops. How to record trajectories in a lab.js task with the Mousetrap plugin, what changes when participants use their own devices, and how to read Open Lab's export into the mousetrap R package.
12 October 2026
Implicit measures online: running IAT-style tasks with lab.js
An IAT is a reaction-time task with a fixed block structure, constrained trial order, required error correction and counterbalanced block order. How each of these is built in lab.js, how block order can be counterbalanced across participants in Open Lab, and what a recent nursing-home study shows about running such a task online.
21 September 2026
Running a lab.js experiment online, end-to-end
A start-to-finish walkthrough of taking a behavioural experiment online — build the task in lab.js, wrap it as a study in Open Lab, recruit participants, and export clean data to analyse — held together by the Task → Study → Project model.
13 July 2026