“…18 to +.44, in tapping tasks (e.g., Borkan & Norris, 1980;Dirken, 1972;Furukawa et al, 1975;Jalavisto, 1965); and correlations of .42 to .53, in other visual-manual transcription tasks such as the digit-symbol substitution task (see Salthouse, 1982b, for a review). Several studies have reported that one or more of these measures is related to speed of typing (e.g., Ackerson, 1926;Book, 1924;Cleaver & O'Connor, 1982;Flanagan & Fivars, 1964;Flanagan, Fivars, & Tuska, 1959;Hayes, 1978;Hayes, Wilson, & Schafer, 1977;Leonard & Carpenter, 1964;Muscio & Sowton, 1923;Tuttle, 1923), although there are some contradictory results (e.g., Hansen, 1922). The RT analogy, therefore, still seems relevant, even though the quantitative estimates should not be taken too seriously.…”