Transcript Task Analysis - Personal Home Pages (at UEL)

Task Analysis
An introduction
What is Task Analysis
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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
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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
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Observation
Verbal protocols
Interviews
Diary Studies
Questionnaires
Protocol analysis Operating logs
Action Research Paradigm
Who to gather information from?
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Operators
Experts
Naive users
Trainers
Supervisors
Managers
Associated roles e.g. pilot for an ATC TA
Some methods for Knowledge
Representation (KR)
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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.