Discount usability evaluation was also developed by Nielsen in 1989. The idea behind this technique is to enable developers with few...

Video recording is usually coupled with some form of audio record, which is known as verbal protocol. Sometimes this verbal protocol may...

Back in July 2020, I started participating in an online course called Interaction Design on Coursera. More precisely, the course is a...

Today, I would like to share an assignment from the Interaction Design specialization’s second course “Design Principles” on Coursera....

With today's article, I would like to talk about experiment design. With its roots in Psychology, experiments have always played an...

An effective starting point for designing new technology is to identify an existing problem or user need. Finding a big problem or need...

With its roots in Psychology, experiments have always played an important role in Human-Computer Interaction (HCI). Designs benefit from...

Usage simulations involve reviewing the system to find out usability problems. These reviews are usually done by experts, who simulate...

In the field of human-computer interaction, the Wizard of Oz (abbr. WoZ) technique is a research experiment used to test a...

Researchers design an experiment so that they can observe or measure if changes to one thing cause something else to vary in a repeatable...

There is much confusion around the terms survey and questionnaire. They are often used interchangeably probably because people think...

Users' attitudes can have a strong influence throughout the design and development of products. Checking users' opinions at various...

Results are the reason we run any research, and surveys are no exception. Survey results can help to provide meaningful insights, shape...

Without doing some form of evaluation is impossible to know whether or not the design or system fulfills the needs of the users and how...