The links in the table below allow you to test your own visual memory. (The tests are designed for high speed internet access; at present, they do not work well with a dialup connection. For a workaround click.)

The tests use a recognition memory procedure. In each test, one, two or four briefly-presented compound gratings (plaid patterns) are shown. You try to remember these study items. Then, right after a warning bell, you will see a briefly-presented test grating.

Your task is judge whether that final, test grating had been among the preceding study items --in which case you respond yes --, or had not been among the study items --in which case you respond no. You will told whether your answer was correct.

You might want to begin with easy tests --ones in which just a single study item precedes the test item. These one-item tests are accessed via links in the table's left column. Then you might tackle more difficult tests, with either two study items (middle column) or four study items (right column). You may find that some of the tests are more difficult than others, even with the same number of study items. The reasons for this variation are given in Kahana & Sekuler (2002).

1 item	2 items	4 items
1 item	2 items	4 items
1 item	2 items	4 items
1 item	2 items	4 items
		4 items
		4 items

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