Deary-Liewald Task – Cognitive Reaction Time Measurement Kit

A ready-to-run implementation of the validated Deary-Liewald reaction time paradigm (Deary, Liewald & Nissan, 2011) - the standard psychometric task for measuring psychomotor and choice reaction speed, used in cohort studies such as the Lothian Birth Cohorts.

Everything is driven by a single, thoroughly configurable script and a mode-aware custom Inspector - no coding required to use, customize, or extend any of the included variants.

Fully customizable, out of the box:

• Response keys, box appearance, colors, fonts and all instruction texts
• Number of practice/test trials and blocks per phase
• Timing (pre-stimulus interval, response window, pauses)
• Feedback behaviour (immediate / end-of-block / none)
• Auto-generated boxes or your own hand-built UI - just assign the references

Suitable for:

• Academic research and student projects (psychology, cognitive science, neuroscience)
• Cognitive training / brain-training style applications
• Any project needing a validated, science-grounded reaction-time benchmark

5 ready-to-use modes, each with its own prefab and example scene:

• Simple Reaction Time
• Four-Choice Reaction Time
• Deary-Liewald (Simple + Four Choice) - the original, validated protocol (default)
• N-Choice Reaction Time (2–9 boxes)
• Audio Simple Reaction Time (Showcase)

Drop a prefab into your scene, press Play, and you have a fully working, data-logging reaction-time task in minutes.

Supported VR Device Types via SteamVR

* Vive

* Oculus

For further reading, see:

Deary, Liewald & Nissan (2011). Behaviour Research Methods, 43, 258-268.

Jensen, A. R. (2006). Clocking the mind: mental chronometry and individual differences. Amsterdam, The Netherlands: Elsevier

We are always interested in scientific collaborations. Please reach out to [email protected]