Alternate Forms Flicker Task Image Database

Full description

This archive includes the full 100-images used in the development of the Alternate Forms Flicker Task image database. Images with and without the target are provided, as well as a separate folder where the target has been highlighted.

Two versions of the task are also provided, a 40-image version and a 19-image version. Each version is further divided into Set A and Set B of the task. This allows for repeated measures designs using the task. Within each folder of both versions is a CSV file containing data pertaining to performance on each image for that version of the task.

A CSV file is also provided that details the changing feature, the X and Y pixel details of the target, and total area of the image the target covers.

Lastly, eight practice images and four 'easy' images are provided. These easy images contain a larger target that is easier to detect in order to protect against task difficulty reducing task motivation.

Additionally, a brief document on the development of the AFFT is provided. A full manuscript pertaining to the development of the task is currently being drafted.

If you use this image set and/or task in your research, please cite as:

Norman, A., Conduit, R., Laycock, R., & Robinson, S. R. (2026). Subdomains of executive function correlate with accuracy on a change detection task. Psychonomic Bulletin & Review, 33(5), 171. https://doi.org/10.3758/s13423-026-02937-0