This law simply states that the logarithm of the reaction time for a particular task decreases linearly with the logarithm of the number of practice trials taken. Qualitatively, the law simply says only that practice improves performance. For example, the power of law of practice has been called upon repeatedly to demonstrate the psychological validity of Soar's learning mechanism, chunking . As an application of rational analysis , Anderson argues that the power law of practice is an environmental and not architectural constraint. Assumptions Need probabilities are distributed according to Zipf's law.
Desirability is a gamma function.
Usage decays exponentially. This is a mechanistic assumption and is made with a priori notions of mechanism. Retrievals are a Poisson process. List of Theories Table of Contents .