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New design (Lens 2). New versions of the survey pages (text2, matrix2, prolific2) and tasks (stroop2, gonogoalt2, nback2, bart2, dictator2, ultimatum2), plus a new final page. They take the same study-file options and record the same data as the classic versions, plus taskVersion: 2. English, Persian and Arabic, phone and desktop. Try them from the links in the README.
Multiplayer ultimatum and dictator games (multiplayer). Real participants are paired live, with an optional computer partner (Cut's bots) if no one arrives in time. Each round, the responder watches the proposer's tokens move. A debrief after the game is on by default. Data for each participant, plus a full match export. Demo: https://lens.cut.social/#/demo-multiplayer/en
For running studies. Precise reaction times (timingVersion: 2), saving each page as participants go (saveProgress), balanced condition assignment (/assign), and study-file checking (npm run validate).
Unchanged. Classic task types are frozen, so existing studies and their data stay comparable with v1.0.