A classification of human errors based on their underlying cognitive mechanisms.
- Methodologies: Engineering, Product Design, Project Management
Klauer’s Taxonomy of Human Errors

Klauer’s Taxonomy of Human Errors
- Cognitive Computing, Continuous Improvement, Error Prevention, Human Factors, Human Factors Engineering (HFE), Human-Centered Design, Human-Computer Interaction, Root Cause Analysis, Safety
Objective:
How it’s used:
- A taxonomy that categorizes human errors into different types, such as errors in perception, decision-making, and action. It is used in human factors and safety science to understand the causes of errors and to design systems that are more resistant to them.
Pros
- Provides a framework for understanding and analyzing human errors; Can help to identify the root causes of accidents.
Cons
- Can be complex and difficult to apply in practice; May not cover all types of human errors.
Categories:
- Ergonomics, Risk Management
Best for:
- Analyzing human errors in accidents and incidents to identify the root causes and prevent future occurrences.
Klauer’s Taxonomy of Human Errors serves as a valuable resource in various sectors such as aviation, healthcare, and manufacturing, where the potential for human error significantly impacts safety and efficiency. This methodology provides a structured approach to categorize errors, distinguishing between perceptual errors that stem from misinterpretations of sensory information, decision-making errors arising from flawed reasoning processes, and action-based errors linked to inappropriate execution of tasks. The applicability of this taxonomy extends into the design phase of products or systems, where engineers and designers can collaborate to create user interfaces that minimize the likelihood of perceptual misunderstandings or decision-making failures. For instance, in aviation, cockpit designs incorporate visual and auditory alerts that aid pilots in decision-making, addressing potential human errors identified through this taxonomy. Implementation in healthcare can involve designing medical devices that account for human behavior, ensuring that they align with user capabilities and limitations. Participants in this methodology typically include human factors engineers, system designers, safety analysts, and frontline workers, all working together to create a safer, more efficient environment through systematic error analysis and the adoption of user-centered design principles. The taxonomy’s framework aids teams in identifying root causes of errors, ensuring that systemic issues are addressed rather than placing blame on individuals, which ultimately enhances the reliability of the systems under consideration.
Key steps of this methodology
- Identify the type of error: categorize the error based on perception, decision-making, or action.
- Analyze contextual factors: examine the environmental and systemic influences present during the error occurrence.
- Determine the error's impact: assess the consequences of the error on safety, performance, or goal achievement.
- Investigate individual factors: review the cognitive and emotional states of individuals involved at the time of the error.
- Trace the error path: follow the sequence of events leading to the error to uncover any contributing factors.
- Identify preventive measures: propose specific changes in design or processes to mitigate similar errors in the future.
Pro Tips
- Utilize simulation and modeling tools to replicate human error scenarios, allowing for a structured analysis of decision-making processes in high-stakes environments.
- Implement regular interdisciplinary team reviews of incident reports to dissect error patterns and enhance collective understanding of systemic vulnerabilities.
- Incorporate user feedback loops in the design phase to ensure that perceptual and cognitive biases are adequately addressed, minimizing potential errors in real-world applications.
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