UX Evaluation Notes

UX Evaluation

Introduction

  • After prototyping, designing, or implementing a product, evaluation is crucial at all stages.

  • This section covers general evaluation, expert involvement, and user-based methods for evaluating products, prototypes, and wireframes.

The Evaluation Stage

  • Having progressed through Garrett's elements of user experience, a testable prototype should be available.

  • The process typically involves:

    • Product Objectives

    • User Personas

    • User Stories

    • Competitive Analysis

    • Flowcharts

    • Wireframes

    • Feedback and Error Handling

    • Visual Design (Color Scheme)

    • High-Fidelity Clickable Prototype

  • Instead of immediately developing the final product, evaluation is prioritized to ensure usability and accessibility.

Why Evaluate?

  • Evaluation is crucial for a successful product. Without user feedback, the product may miss the mark.

  • Evaluation helps determine if the usability is satisfactory and if users can complete tasks without errors.

  • Evaluation can start as early as the wireframe stage.

User Evaluation

  • User evaluation begins when considering user needs, typically through surveys and interviews to create user personas.

  • The aim is to ensure users will use and like the product.

  • Usability and user satisfaction are key focuses.

Key Considerations During Evaluation

  • Does the product meet user expectations?

  • Is the functionality correct from the user's perspective?

  • Is the workflow logical and step-by-step?

  • Many products fail due to inadequate evaluation and a lack of understanding of user needs.

Stages of Evaluation

  • Evaluation should occur at early, mid, and late design stages.

  • Testing is important to assess interest in novel designs and critical elements, especially in fields like medical systems.

  • Thorough testing ensures consistency across users.

  • As the scale of testing increases and no new issues arise, confidence in the product's functionality grows.

Factors Affecting Evaluation

  • Time and cost are significant factors, especially for smaller companies.

  • Various low-cost, time-efficient techniques can be employed.

  • Experienced evaluation teams can streamline the process.

Comprehensive Testing is Essential

  • Multiple prototypes should be tested throughout the design phase, along with the final product.

  • User opinions and experiences must be carefully considered before launch.

Schneiderman's Quote

  • Failure to test and document, and to act on feedback, can lead to:

    • Failed contract proposals

    • Malpractice lawsuits

  • Comprehensive evaluation involves:

    • Identifying Issues

    • Correcting Issues

    • Creating New Prototypes

    • Further Testing

  • The goal is to release a product with minimal or no problems.