Modeling Reduced Human Performance as a Complex Adaptive System
Abstract
Current cognitive models not only lack flexibility and realism they fail to model individual behavior and reduced performance. This research analyzes current cognitive theories (namely symbolism connectionism and dynamicism). It hypothesizes that reduced human performance can be best modeled as a complex adaptive system. The resulting multiagent model "Reduced Human Performance Model (RHPM)" implements reactive agents competing for cognitive resources. Lack of resources is used to trigger the simulation of imperfect perception and imperfect cognition. The simulation system is calibrated with human experimental data in scenarios involving vigilance decrement, wherein vigilance is decreased during the first 30 minutes of a screening task. RHPM is then validated against previous unknown vigilance task scenarios. RHPM generates realistic reduced human performance with a new cognitive modeling hypothesis The developed multiagent system generates adaptive and emergent behavior. Its use for computer generated forces (i.e. radar screen operator) would improve the realism of simulation systems by adding human like reduced performance. This research's main contribution is the development of a well suited tool to mediate between vigilance theories such as signal detection theory and experimental data. It generates insights creating likely hypotheses to improve the theories.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2003
- Accession Number
- ADA418311
Entities
People
- Joerg Wellbrink
Organizations
- Naval Postgraduate School