Manual skills can be classified in terms of fine and/or gross psychomotor functioning
(Gilchrist and Gruber, 1984). Manual skills involve psychomotor functioning in
the manipulation of handheld tools and the positioning of components. Fine motor
functioning involves neuromuscular coordinations that are usually precision
orientated and involve hand-eye coordination. Gross motor functioning involves use
of the large muscles of the body; often with the whole body being in movement.