Presentation on theme: "Task Analysis An introduction. What is Task Analysis Broad ranging group of methodologies Decompositional in nature Many uses e.g. Always goal driven."— Presentation transcript:
Task Analysis An introduction
What is Task Analysis Broad ranging group of methodologies Decompositional in nature Many uses e.g. Always goal driven
Learning Goals Understand the principles of task analysis Be familiar with all the core methodologies Have a knowledge of a selection of less frequently used methods Conduct at least one extensive task analysis Understand why such simple techniques are so useful Understand the limitations of their use.
Basic stages of task analysis Awareness of need to examine issue Question definition Knowledge Elicitation Knowledge Representation Data analysis and manipulation Iteration and Validation Recommendation, comment and intervention
Awareness/question definition Important issue when work is commissioned Closely linked to organisational issues May be in house, or out sourced Resourcing a key issue - task analyses take time
Knowledge Elicitation - gathering data A discrete stage that needs to done thoroughly A range of techniques Should develop a proper strategy experience should allow the expert practitioner to proceed on an apparently informal basis Need to acquire domains specific knowledge to be effective
Some methods for Knowledge Elicitation Observation Verbal protocols Interviews Diary Studies Questionnaires Protocol analysis Operating logs Action Research Paradigm
Who to gather information from? Operators Experts Naive users Trainers Supervisors Managers Associated roles e.g. pilot for an ATC TA
Some methods for Knowledge Representation (KR) HTA - Hierarchical Task Analysis TTA - Tabular Task Analysis FMEA- Failure Mode Effect Analysis Link Analysis MORT - Management Oversight Risk Trees Murphy Diagrams Time Line Analysis And many, many, many more.
Further analysis data may, on analysis yield further useful information –e.g. Probabilistic Risk Analysis (PRA) –e.g. Human Reliability Analysis(HRA) –e.g. organisational analysis
Intervention Outside the formal task analysis process Likely that you will wish to make or even undertake interventions.