Standardised working memory experiments. A complete, research-grade n-back task with seven stimulus channels, adaptive difficulty, full signal-detection statistics and analysis-ready CSV output.n-Back Task – Working Memory Assessment Tools is a complete implementation of the n-back paradigm, the most widely used laboratory measure of working memory updating. It is built for researchers, students, serious-games developers and anyone who needs valid cognitive data rather than just a memory minigame.Everything is configurable from the Inspector:Choose single, dual or triple n-back;combine any of seven stimulus channels — spatial position, letters, numbers, colors, shapes, custom images and audio;set your own timing, target ratio, block structure and instruction texts;swap in your own sprites and sound files to build a task in any theme, in any language.The output includes:the full signal-detection picture per channel and per block: hits, misses, false alarms, correct rejections, hit and false-alarm rates,d-prime, criterion C, and reaction times with standard deviations,a per-trial CSV that drops straight into R, Python or SPSS.The scientifically critical details are handled correctly:warm-up trials are excluded from scoring,the log-linear correction keeps d-prime finite,and empty conditions report as missing.The asset includes ready-to-run scenes and prefabs for the common designs, so you can press Play within a minute of importing and then adapt the closest variant to your own study.Optional features include adaptive difficulty that tracks each participant's capacity, n±1 lure trials with separate scoring, a practice block, reproducible sessions via a fixed random seed, and Unity Events for hooking the task into your own game logic.Suitable for cognitive psychology and neuroscience research, student projects and theses, brain-training and serious games, VR research environments, and any project that needs a validated measure of working memory.REQUIREMENTSThis package requires TextMeshPro, which ships with Unity; if the Editor prompts you to import TMP Essential Resources after import, accept. It uses Unity's legacy Input class, so Project Settings → Player → Active Input Handling must be set to "Input Manager (Old)" or "Both". Under the new Input System alone the task will throw at runtime. Minimum Unity version is 2021.3 LTS. The package is render-pipeline independent and works with Built-in, URP and HDRP. VR controller input is optional and requires the SteamVR Unity Plugin(not included; obtain it separately from Valve). Without it, the package compiles and runs normally with keyboard input.For further reading, see:Kirchner, W. K. (1958). Age differences in short-term retention of rapidly changing information. Journal of Experimental Psychology, 55(4), 352–358. — The original description of the task.We are always interested in scientific collaborations. Please reach out to contact@zefwih.com.Task modesSingle, dual and triple n-back from one componentSeven stimulus channels: Position, Letter, Number, Color, Shape, Image, AudioAudio layers onto any visual channelConfigurable n level from 1 to 9Experimental controlFully configurable timing: stimulus duration, inter-stimulus interval, response window, fixation, block pausesConstant stimulus-onset asynchrony, as required by the paradigmConfigurable target ratio, trials per block and number of blocksOptional practice block with an explicit transition to scored trialsOptional n±1 lure trials with separate scoringAdaptive difficulty with configurable thresholds, bounds and evaluation windowFixed random seed for reproducible sessionsConfigurable grid from 2×2 up to 6×6 for the spatial channelMeasurement and dataHits, misses, false alarms and correct rejections per channelHit rate, false-alarm rate and accuracyd-prime and criterion C with log-linear correctionReaction time mean and standard deviation over hitsSeparate lure false-alarm statisticsPer-trial CSV log, semicolon-separated, locale-independentOptional human-readable session summary fileNon-scored warm-up trials logged but excluded from all statisticsIntegrationUnity Events after each trial, each block and at session endKeyboard input and SteamVR controller inputWorld Space and Screen Space rendering, desktop and VRFull C# source code included, documented throughoutEditMode and PlayMode automated tests includedRequirementsUnity 2021.3 LTS or newerTextMeshPro (included with Unity)Active Input Handling set to "Input Manager (Old)" or "Both"Render pipeline independent: Built-in, URP and HDRPSteamVR plugin only required for VR controller inputParts of this package were produced with the assistance of AI-based tools.Source code: the runtime C# code, the custom Inspector code and the automated EditMode and PlayMode tests were developed with the assistance of AI-based coding tools. All code was reviewed, tested and adapted by the publisher, and the behaviour of the trial-generation and statistics logic is verified by the automated tests included in the package.Documentation: the included user documentation was drafted with AI assistance and reviewed and edited by the publisher.Image assets: the example shapes, the example emojis in the Images folder were created by the publisher as original vector artwork with the assistance of AI-based generation tools.No third-party content is redistributed in this package.
