Differences between letters of adolescent mildly mentally handicapped (MMH) students written by hand and those composed on a microcomputer using a word processor were examined. The subjects spent significantly more time, produced noticeably longer letters, and made substantially more revisions when writing letters on a microcomputer. However, the mean number of words written per unit of time spent completing a letter was substantially higher for subjects' handwritten letters, while judges' holistic evaluations of letter quality did not differ significantly between the two production modes.
Nancy Nesbitt Vacc (Thu,) studied this question.