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Summary1. When people get a brief glimpse of a matrix of random letters, they can generally report only 4 or 5 letters.2. This limit seems to be produced by the rapid fading of the memory image in iconic memory. 3. We know that more than 5 letters are present initially in the iconic memory store, because partial report (cued recall) tasks show much higher percentages of correct recall. 4. The typical duration of iconic memory appears to be around 250 milliseconds, because delaying the cue beyond this amount drastically reduces performance. |