The Ranschburg effect: the role of guessing strategies.

The Ranschburg effect refers to the finding of impaired serial recall of items repeated on a list. One account attributes this effect to the use of a strategy where subjects avoid using as guesses stimuli that they had recalled elsewhere on the list. Support for this interpretation is reported here. The Ranschburg effect is eliminated when subjects are instructed to avoid guessing. Also, the Ranschburg effect is found in partial report only when subjects are told that the crucial item occurred elsewhere on the list.