Numerous word recognition studies conducted over the past 2 decades are examined. These studies manipulated lexical familiarity by presenting words of high versus low printed frequency and most reported an interaction between printed frequency and one of several second variables, namely, orthographic regularity, semantic concreteness, or polysemy. However, the direction of these interactions was inconsistent from study to study. Six new experiments clarify these discordant results. The first two demonstrate that words of the same low printed frequency are not always equally familiar to subjects. Instead, subjects' ratings of "experiential familiarity" suggest that many of the low-printed-frequency words used in prior studies varied along this dimension. Four lexical decision experiments reexamine the prior findings by orthogonally manipulating lexical familiarity, as assessed by experiential familiarity ratings, with bigram frequency, semantic concreteness, and number of meanings. The results suggest that of these variables, only experiential familiarity reliably affects word recognition latencies. This in turn suggests that previous inconsistent findings are due to confounding experiential familiarity with a second variable.Twenty years of research on word recognition has repeatedly shown that the familiarity of a word greatly affects both the speed and the accuracy of its recognition. More familiar words can be recognized faster and more accurately than less familiar words. Traditionally, lexical familiarity has been operationalized as the frequency with which a word occurs in printed English text. Experimenters typically construct their stimulus sets by consulting one of three widely used indices: Thorndike and Lorge's (1944) Teacher's Word Book of 30,000 Words, Kučera and Francis's (1967) Computational Analysis of Present-Day American English, or Carroll, Davies, and Richman's (1971) American Heritage Word Frequency Book. Within these corpora, one would find that the English word amount occurs relatively frequently (with an average frequency score of 110 occurrences per million words of text), whereas the Copyright 1984 by the American Psychological Association, Inc.Requests for reprints should be sent to Morton Ann Gernsbacher, who is now at the Department of Psychology, University of Oregon, Eugene, Oregon 97403-1227. 1 Experiential familiarity ratings were collected on all (126) of the low-printed-frequency homographic and non-homographic words presented in the Rubenstein et al. (1970) and Rubenstein et al. (1971b) and Forster and Bednall (1976) studies, with the same procedures described in the Method section of Experiment 2. The results of the analyses performed on these ratings mirrored the results found in the original lexical decision task (for the Forster & Bednall, 1976, study) and the results presented by Clark (1973)
The Effect of Printed FrequencyHowes and Solomon (1951) reported that printed frequency could account for approximately half of the variance found in tachistoscopic thre...