88. People make predictable types of errors

88. People make predictable types of errors

Decide which possible errors you are most concerned about and which are important to fix first. Collect data on which category of errors people are making. This will help focus your redesign efforts after testing. Use systems like HFACS (slide 4) to analyze and prevent errors, especially if errors may result in injury or death.

Giphy (video/mp4)

Caption: : https://gph.is/2aEsxuw

Types of Errors

Performance Errors Mistakes you make while you’re going through the steps to complete a procedure. Commission, Omission, and Wrong-action. Motor-control Errors Errors you make while using the control of a device. For example, accidentally swiping when you mean to zoom.   Use the flashcards to learn the definitions and get real-life examples.

• 88. Performance error definitions
• 88. Performance error examples

Swiss Cheese Model of Human Error

Swiss Cheese3 (image/jpeg)

Caption: : https://stratog.rcog.org.uk/human-factors/clinical-error/swiss-cheese-model

Prof James Reason's Swiss Cheese Model (Embed)

Caption: : In his book Human Error (1990) James Reason wrote that errors have a cumulative effect. Each error makes a hole in the system until the end when you have swiss cheese.

HFACS

In 2000 Scott Shappell and Douglas Wiegmann wrote a paper on The Human Factors Analysis and Classification System for the US office of Aviation Medicine. They worked from the Swiss Cheese Model and extended it to propose a system for analyzing and classifying human errors.   See the video for an in-depth explanation.

HFACS-D Research - User Level Survey (Embed)