Two studies examined developmental changes in handwriting variability. Results indicated that, between 3 and 5 years, the number of grip patterns that children routinely use declines and the variability associated with pen-surface positioning declines. Older 3-year-olds used an adult grip pattern more often and were less variable in pen-surface…

Maintains that advances in the literature on perception-action development suggests that tool use may be a more continuous developmental achievement than previously believed. Suggests new research directions, including efforts to investigate the processes by which children detect and relate affordances between objects, coordinate spatial frames of…