@RUTGERS.ARPA:good%xenon.DEC@decwrl.ARPA (02/13/85)
From: good%xenon.DEC@decwrl.ARPA (Michael Good) From "Error Correction during Text Entry with Word-Processing Systems" by Alan S. Neal and William H. Emmons (Human Factors, 1984, 26(4), 443-447): "The results as revealed on Figure 1 show that typists detected and corrected an average of 11 errors per 1000 characters typed. This means that these typists (with an average keying rate of 56 words/min) stopped and made a correction, on the average, once every 19 s." (p. 444) In addition, 1.4 errors per 1000 characters typed remained uncorrected, which by my calculations would bring the rate to an error every 17 s. According to the authors, other studies have shown similar or lower error rates. Michael Good Good%Sybil.DEC@decwrl.ARPA