This review of 47 publications describes the development of standard and Dvorak keyboards, finding that, although most studies found Dvorak more efficient, many methodological weaknesses appear. Considers that current interest in Dvorak stems from concerns about productivity, workplace safety, and the need for keyboarding speed. (SK)

Finger-movement distances for alphabetic keys of standard and Dvorak keyboards were calculated for every digraph in the business vocabulary. Dvorak required 37% less distance and had more right-hand, home-row, same-row, and alternate hand reaches. (SK)