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Experiment Author: Psychology Software Tools, Inc.
The Working Memory Task (Vogel et al., 2005) measure a participant's efficiency at excluding irrelevant items from memory.
In this task, participants are briefly shown (200 ms) an array of red and blue rectangles at various angles. They are told to memorize the angles of these rectangles on a specific side of the screen. Then, after a 900ms retention interval, participants are shown a test array which may or may not be identical to the first array. If it is identical, participants press "1" on the keyboard. If it is different, participant press "2" on the keyboard.
Watch the following video to see how this task was made: Working Memory Task.
Vogel, E., McCollough, A. & Machizawa, M. Neural measures reveal individual differences in controlling access to working memory. Nature 438, 500–503 (2005). https://doi.org/10.1038/nature04171