Modeling Random Walk Processes In Human Concept Learning
Abstract
This report results from a contract tasking University College London as follows: The primary objective was to investigate the scope and implications of random-walk-like processes in human concept learning, and the construction of cognitive models of concept learning valid at the level of individual subjects. The project distinguished two levels of cognition deployed in the task: passive (automatic) learning of stimuli and their classification, as against deliberative processes such as hypothesis testing. Although the focus of research was intended to be on deliberative processing, realistic baseline assumptions about passive processing needed to be tested which proved to be unexpectedly difficult. Eventually, the source of random walk effects were found, in the time subjects take to learn to distinguish between confusingly similar stimuli. It is predicted that allowing a longer interval between trials will allow subjects more time to carry our deliberative processes, leading to better task performance.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2006
- Accession Number
- ADA462700
Entities
People
- Richard M. Young
Organizations
- University College London