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CO2401 Software Development Lecture 19 Notes
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  • Course
  • Software Development (CO2401)
  • Institution
  • University Of Central Lancashire Preston (UClan)

This document contains comprehensive notes from Lecture 19 of the CO2401 course on Software Development, focusing on User Interface (UI) Evaluation. This lecture provides an in-depth exploration of methods and techniques used to assess the effectiveness, efficiency, and user satisfaction of softwar...

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Document information

  • August 22, 2024
  • 4
  • 2023/2024
  • Class notes
  • Muhammad alhassan
  • All classes

Subjects

  • computer science
  • software
  • development
  • university
  • computer
  • 2nd year
  • efficiency
  • lecture
  • cs
  • notes

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  • University of Central Lancashire Preston (UClan)
  • Unknown
  • Software Development (CO2401)
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CO2401: Software Development
Lecture 19


Introduction to User Interface Evaluation
1. Purpose of UI Evaluation:
o UI Evaluation is crucial for assessing the effectiveness, efficiency,
and satisfaction with which users can achieve their goals using a
user interface.
o Main Goals:

 Identify usability problems in the design.
 Measure the performance of users in completing tasks.
 Gather feedback to improve user experience.
Heuristic Evaluation
1. Definition:
o Heuristic Evaluation: A method for identifying usability problems
in a user interface by comparing it against established heuristics
(rules of thumb).
o Origin: Proposed by Jakob Nielsen, known as Nielsen’s Heuristics.

o Process:

 A group of experts independently reviews the interface,
identifies problems, and then consolidates their findings.
2. Evaluation Process:
o Multiple Evaluators (3 to 5):

 Each evaluator uses heuristics to examine the interface.
 Typically involves two passes: one to familiarize with the
interface and another to identify issues.
o Reporting:

 Problems are recorded in relation to a specific heuristic.
 Evaluators assign severity ratings to problems based on their
impact on the user.

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