1997 C. H. McCloy Research Lecture: Knowledge is more than we can talk about: implicit learning in motor skill acquisition.

This article discusses the acquisition of knowledge about environmental regulatory features that guide the selection and execution of movements involved in performing open motor skills. First, empirical evidence related to the visual search characteristics of skilled and novice performers is considered to demonstrate that learning environmental regulatory features is an important part of performing an open motor skill. Then, the hypothesis is proposed and discussed that environmental regulatory features can, and probably should, be learned implicitly, which means the features can be learned and used, even though the learner is not consciously aware of the specific characteristics of those features. This article also discusses laboratory-based experiments that provide evidence supporting this hypothesis and presents implications for developing instructional strategies and practice conditions.