Department of Psychology  Institute for Simulation and Training University of Central Florida Orlando, FL Stress and Performance P.A. Hancock Presentation for the Class of 2008 Human Factors II EXP 6257

Human Factors II: Stress and Performance The Inverted-U Shape Relationship Between Stress and Performance

Unsafe Behavior Ratings Against Ambient Temperature (WBGT)

The Original Yerkes-Dodson (1908) Set Up

The Original Yerkes-Dodson (1908) Data

Hebb’s (1955) Resurrection of the Inverted-U

Apparent Support for the Stress by Complexity Interaction

Broadbent’s Two-Stage Model

The Pribram and McGuiness Model

Sanders (1983) Hybrid Model

Hockey and Hamilton and the ‘Patterning of Stress States’

The Resource Metaphor

The Unitary Resource Notion (Kahneman, 1973)

The Multiple Resource Model (Wickens, 1979)

Mackworth’s Data on Stress and Expertise

Fisk and Schneider – Automaticity and Stress

Practical – Real-World Examples

Hancock – Performance Under Thermal Stress

Hancock – Performance Limits in Log/Log Space

Noise Performance Log/Log Space

A Brief Observation on Response Variability

The Problem of Interactions

The Hancock and Warm Model

Hancock and Weaver

The Hancock and Warm Model

Minkowski Diagram

The Cross-Section of Energy

Catastrophic Failure

Kugler and Turvey – Energy Minimization

Shells of Protection

The Next Human Threshold