Solomon, R. L., & Howes, D. H. (1951). Word frequency, personal values, and visual duration thresholds. Psychological Review, 58, 256-270. doi:10.1037/h0058228. [FULLTEXT]
A History of Psycholinguistics
Bibliography for Levelt (2013)

Solomon, R. L., & Howes, D. H. (1951). Word frequency, personal values, and visual duration thresholds. Psychological Review, 58, 256-270. doi:10.1037/h0058228. [FULLTEXT]