HCI Task Identification and Usefulness , Usability

What is one of the primary methods for identifying tasks in HCI?

• Guessing user needs

• Watching real users

• Asking colleagues

• Reading user manuals

Why is talking to users important in task identification?

• To gather personal opinions

• To understand their experiences and needs

• To validate design decisions

• To increase user engagement

What does "Start small" refer to in task identification?

• Focusing on broad objectives

• Beginning with simple tasks

• Launching a full product

• Ignoring minor details

What is the purpose of "Abstracting up" in task identification?

• Simplifying complex tasks into general principles

• Focusing on minute details

• Enhancing graphical design

• Testing user patience

What is meant by "You’re not your user" in HCI?

• Designers should trust their instincts over user feedback

• Designers must consider user perspectives different from their own

• Designers should ignore user feedback

• Designers and users have identical needs

What is the primary focus of usability in HCI?

• Aesthetics of the interface

• Effectiveness, efficiency, and satisfaction

• Cost reduction

• Technological innovation

How is usefulness defined in the context of HCI?

• The system's ability to perform the required tasks

• The system's visual appeal

• The number of features provided

• The speed of processing

How do usability and usefulness differ in HCI?

• Usability relates to how easy a system is to use, while usefulness relates to the system's functionality

• They are identical concepts

• Usability focuses on user feedback, while usefulness focuses on developer input

• Usability is about visual design, while usefulness is about system speed

Why are usability and usefulness considered interdependent in HCI?

• A usable system is always useful

• Both contribute to the overall user experience and system effectiveness

• Usability does not affect usefulness

• They function independently of each other

Which scenario best illustrates the interdependence of usability and usefulness?

• A beautifully designed app that fails to perform essential tasks

• An app with basic design that effectively completes necessary tasks

• An app that is both easy to use and meets user needs

• A complex system that requires extensive training but performs well