1. Lexical codability and age;Butterfield;Journal of Verbal Learning and Verbal Behavior,1977
2. An alternative to Juilland's usage coefficient for lexical frequencies, and a proposal for a Standard Frequency Index;Carroll;Computer Studies in Humanities and Verbal Behavior,1970
3. Word frequency and age of acquisition as determiners of picture-naming latency;Carroll;Quarterly Journal of Experimental Psychology,1973
4. Age of acquisition norms for 220 picturable nouns;Carroll;Journal of Verbal Learning and Verbal Behavior,1973
5. Age differences in memory span;Chi;Journal of Experimental Child Psychology,1977