How do capuchin monkeys learn to use stones to crack open nuts? Perception-action theory posits that individuals explore producing varying spatial and force relations among objects and surfaces, thereby learning about affordances of such relations and how to produce them. Such learning supports the discovery of tool use. We present longitudinal…

An experiment on children's perception of urban distance is described, focusing on the study's methodology and analyses. Suggests that the methodology/analyses could be used by sixth-formers providing a means by which sixth-formers can develop their own examinations of urban distance perception. (JN)