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Questions and Answers
What does hierarchical task analysis (HTA) primarily focus on?
What does hierarchical task analysis (HTA) primarily focus on?
Which of the following best describes the goal of HTA?
Which of the following best describes the goal of HTA?
Why is a detailed understanding of users' tasks necessary in HTA?
Why is a detailed understanding of users' tasks necessary in HTA?
What does a more complete task analysis involve according to the HTA approach?
What does a more complete task analysis involve according to the HTA approach?
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How are tasks expressed in a hierarchical task analysis?
How are tasks expressed in a hierarchical task analysis?
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What aspect does a coarse hierarchical task analysis fail to communicate?
What aspect does a coarse hierarchical task analysis fail to communicate?
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Which of the following is NOT part of the process in applying hierarchical task analysis?
Which of the following is NOT part of the process in applying hierarchical task analysis?
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Why might illustrations be provided when documenting the 'Complete address' task?
Why might illustrations be provided when documenting the 'Complete address' task?
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What is the primary purpose of a hierarchical task analysis?
What is the primary purpose of a hierarchical task analysis?
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Why is it beneficial to keep the plan separate from the tasks in a hierarchical task analysis?
Why is it beneficial to keep the plan separate from the tasks in a hierarchical task analysis?
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Which of the following statements is true about competing approaches in hierarchical task analysis?
Which of the following statements is true about competing approaches in hierarchical task analysis?
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How does hierarchical task analysis support user experience design?
How does hierarchical task analysis support user experience design?
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What can a hierarchical task analysis provide when comparing different design approaches?
What can a hierarchical task analysis provide when comparing different design approaches?
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What does hierarchical task analysis help capture regarding design?
What does hierarchical task analysis help capture regarding design?
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What role does hierarchical task analysis play in user experience design reuse?
What role does hierarchical task analysis play in user experience design reuse?
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What level of abstraction can hierarchical task analysis help teams understand?
What level of abstraction can hierarchical task analysis help teams understand?
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What is the first step in constructing a hierarchical task analysis?
What is the first step in constructing a hierarchical task analysis?
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Why is it important to identify constraints in hierarchical task analysis?
Why is it important to identify constraints in hierarchical task analysis?
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What does 'calculate criticality' involve in hierarchical task analysis?
What does 'calculate criticality' involve in hierarchical task analysis?
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If a goal is deemed not critical, what should be done next according to the steps?
If a goal is deemed not critical, what should be done next according to the steps?
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What is the ultimate aim of setting goals in hierarchical task analysis?
What is the ultimate aim of setting goals in hierarchical task analysis?
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Which step entails recording the analysis once all task elements are considered?
Which step entails recording the analysis once all task elements are considered?
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What is the purpose of generating hypotheses in the task analysis process?
What is the purpose of generating hypotheses in the task analysis process?
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In hierarchical task analysis, what follow-up step occurs if multiple goals exist after setting the initial goal?
In hierarchical task analysis, what follow-up step occurs if multiple goals exist after setting the initial goal?
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What should be done if the current performance of the goal is deemed unacceptable?
What should be done if the current performance of the goal is deemed unacceptable?
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During the cost-benefit analysis, what is necessary to decide?
During the cost-benefit analysis, what is necessary to decide?
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What should be recorded after generating design hypotheses?
What should be recorded after generating design hypotheses?
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What is included in the re-description step?
What is included in the re-description step?
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What action should be considered if a design solution is ruled out based on costs?
What action should be considered if a design solution is ruled out based on costs?
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What should be done after succeeding in challenging the constraints?
What should be done after succeeding in challenging the constraints?
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Which step involves determining the appropriateness of operations?
Which step involves determining the appropriateness of operations?
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What might indicate the need for further analysis in Steps 5 and 6?
What might indicate the need for further analysis in Steps 5 and 6?
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What is the primary focus of logical decomposition in Hierarchical Task Analysis?
What is the primary focus of logical decomposition in Hierarchical Task Analysis?
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Which of the following statements best describes the logical equivalence rule in Hierarchical Task Analysis?
Which of the following statements best describes the logical equivalence rule in Hierarchical Task Analysis?
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What does the P x C rule in Hierarchical Task Analysis primarily address?
What does the P x C rule in Hierarchical Task Analysis primarily address?
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In Hierarchical Task Analysis, why is the specification of plans important?
In Hierarchical Task Analysis, why is the specification of plans important?
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Which of these best describes a characteristic of a hierarchical representation in Hierarchical Task Analysis?
Which of these best describes a characteristic of a hierarchical representation in Hierarchical Task Analysis?
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Study Notes
Hierarchical Task Analysis
- Hierarchical Task Analysis (HTA) is a method to analyze tasks in a hierarchical structure, moving from top-level goals down to detailed operations.
- HTA allows for easier understanding of tasks and process in Human Factors and user experience.
- HTA involves describing an activity in terms of goals, subgoals, operations and plans.
- HTA’s goal is to create a task hierarchy that lists steps needed to complete high-level tasks.
- HTA is a technique to apply to user experience, by identifying primary goals, detailing steps to accomplish goals, and optimizing procedures.
Applying HTA to User Experience
- HTA requires detailed understanding of users’ tasks.
- Example HTA can be broken down into subtasks, expressed using a numbering scheme.
- HTA can be used to illustrate the subtask level, showing how they are related.
- HTA can also include screen illustrations to put interactions in context.
- HTA plans can be used to describe how subtasks are assembled to achieve a specific goal, with relevant conditions for subtasks.
- HTA plans should be flexible, allowing for different plans based on user experience, like a newbie vs. experienced user.
Benefits of HTA
- HTA allows for clear comparison of different approaches using common language and consistent methods.
- HTA supports user experience design by ensuring effective design.
- HTA enables designers to understand system functionality at different levels.
- HTA supports user experience design reuse by facilitating the use of user experience design patterns for high-level interactions.
Steps in Constructing an HTA
- Start with setting goals, focusing on the main work goal.
- Identify constraints, understanding factors that affect design options.
- Calculate criticality of each task step, determining if it requires further decomposition.
- Ceasing re-description: If goal isn't critical, don’t decompose it further.
- Generate hypotheses or design fixes for areas with unacceptable performance.
- Cost-benefit analysis: Determine if the benefit of a design hypothesis is worth the cost.
- Record analysis: Capture design hypotheses both accepted and rejected.
- Re-description: Include subordinate operations and plans specifying conditions for each operation.
- Challenge constraints: If constraints limit suitable solutions, try to revise them.
- Clean up: Ensure HTA follows established rules such as hierarchical representation, logical decomposition, and logical equivalence.
Rules for HTA
- HTA should be a hierarchical representation of operations and sub-operations.
- Logical Decomposition Rule: Each level of HTA should be a logical decomposition of its higher level, not a temporal order.
- Logical Equivalence: Sub-operations combined with a plan should be logically equivalent to the operation.
- Specification of Plans: Plans should be specified at each level of re-description.
- P x C Rule: This rule is used to determine when to stop decomposing operations.
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Description
Explore the principles of Hierarchical Task Analysis (HTA) and its application in optimizing user experience. This quiz covers the goal-setting, task breakdowns, and the relationship between tasks and subtasks using HTA. Test your knowledge of how HTA aids in creating effective user interactions and understanding user needs.
