Question

1. The ultimate goal of HCI design is about usability. Describe what usability is and identify 5 factors to measure usability?
2. What is cognitive aide and what is the theory behind this? Give three examples to describe how cognitive aides are used in user interface design?
3. Design of an HCI element typically follows Norman’s seven stages of action. With an example. Briefly explain Norman’s seven stages action.
4. Metaphors are powerful designs if done properly. Explain the idea of a metaphor and give two examples of using metaphors in user interface design. What are the 3 advantages and 3 disadvantages of using metaphors?
5. Heuristic evaluation and cognitive walk through are commonly used for HCI design. Briefly explain how to conduct a heuristic evaluation and how to conduct cognitive walk through?

Answer 1

Hey, Here's your answer, hope you will like it.

We know that the main usages of HCI are to have usable, safe, and functional systems.

Usability: It is one of the key concepts in HCI. as we are concerned to make systems easy to learn and use.

Now, let's discuss 5 factors to measure usability.

1). Effectiveness:

• It is about the accuracy that we should have high accuracy in which users can perform their goals.
• The product which is performing should be able to support the user.
• It is good to use simpler and clear language for communication to increase the probability of understanding.

2). Efficiency:

• we should not be confused between efficiency and effectiveness, both are quite different and our ultimate goal is to achieve both.
• As we know, effectiveness is all about accuracy while efficiency is all about the speed that how fast we can finish the task.
• Here, we have seen the number of steps needed to achieve the goal and if we can reduce them by anyhow, then we can have an efficient system.

3). Engagement:

• This is the case we want to achieve, in which the user is totally satisfied with the product.
• Yes, aesthetics and UI elements are very important here.
• Engagement is not only about good looking, but it is the satisfaction of user where user can perform its task and achieve the goal.

4). Error Tolerance:

• In HCI, we generally refer error tolerance as when we encounter an error in the system then the users should be able to quickly recover from it and get back the respective work.
• Human errors are natural we can't stop them we can make a system in which we can easily handle the errors and can easily recover from it.
• Tolerance simply refers to the power to make the system in which we can achieve the goals easily by easily handling the difficulties.

5). Ease of Learning:

• Sometimes it is really hard for them to understand and stick to product regularly.
• So if we can make a product that can easily be used by the user then the interaction will be really easy when they use it.
• It is also beneficial when we are updating many new features in the product.

I hope you liked the answer, if you have any query then please do let me know in the comments,

Thankyou