Free recall is an experimental paradigm where the subject is allowed to recall the items of a list in any order. The removal of the constraint of recalling in serial order may seem to simplify the task from serial recall. However, in fact it complicates the task substantially because it frees the subject to choose among a wide variety of strategies for studying items and recalling them. Some subjects repeat groups of words over and over again, other subjects look for associative or categorical relationships among the words, and still other subjects make up stories involving these words. The more organizational structure that subjects try to impose on the material the better memory they display (e.g., Mandler, 1967).