Author Archives: ConeTrees

The best content at Cone Trees for 2010

January 7, 2011 – 10:39 pm

Most viewed content
From the Downloads section- The Usability Testing Process (diagram)
From the (new) UX Glossary section- Post-Study System Usability Questionnaire (PSSUQ)
From the Quick Posts section- Rohan Shravan on the Adam tablet featuring tech specs better than the iPad
Suggested reading
From the Blog section- My chapter in the book: UX Storytellers - Connecting the Dots
From the (new) [...]

Posted in Blog, Interaction Design, UCD, Usability, Usability Testing, Video | Comments (0)

Post-Study System Usability Questionnaire (PSSUQ)

December 10, 2010 – 6:16 pm

PSSUQ stand for ‘Post-Study System Usability Questionnaire’.
What is the PSSUQ?
The Post-Study System Usability Questionnaire (PSSUQ) is a research instrument that was developed for use in scenario-based usability evaluation at IBM.
PSSUQ consists of 19 items aimed to address the following five system usability characteristics: quick completion of work, ease of learning, high-quality documentation and [...]

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My chapter in the book: UX Storytellers - Connecting the Dots

November 14, 2010 – 11:32 pm

As a contributing author and an industry practitioner, I am happy to see the book, UX Storytellers- Connecting the dots, finally out and it looks great. The book is a collection of forty two stories contributed by various user experience experts from around the globe, each of whom share a particular real (or based on [...]

Posted in Blog, HCI, UCD, Usability, Usability Testing | Comments (0)

Human Factors

October 24, 2010 – 1:36 pm

What is Human Factors?
The terms human factors and ergonomics are closely associated with engineering psychology, the study of human performance in the operation of systems. Human factors psychologists and engineers are concerned with anything that affects the performance of system operators—whether hardware, software, or liveware. They are involved both in the study and application of [...]

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Context of Use

September 20, 2010 – 9:57 pm

What is Context of Use?
Designing for usability involves establishing user requirements for a new system or product, developing design solutions, prototyping the system and the user interface, and testing it with representative users. However, before any usability design or evaluation activity can begin, it is necessary to understand the Context of use for the product, [...]

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The official definition(s) of Usability

August 30, 2010 – 9:08 pm

What is the official definition of usability? Well, the International Standards Organization (ISO) offers not one but two definitions of usability. One definition describes usability as quality of use and the other describes usability as a software quality.
Usability as quality of use
According to part 11 titled ‘Guidance on Usability’ of the ISO 9241 standard [...]

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Cognitive Walkthrough

August 18, 2010 – 11:53 pm

The Cognitive Walkthrough (Lewis, Poison, Wharton, and Rieman, 1990; Poison, Lewis, Rieman, and Wharton, 1992) is a usability inspection method that focuses on evaluating a design for ease of learning, particularly by exploration. This focus is motivated by the observation that many users prefer to learn software by exploration (Carroll and Rosson, 1987; Fischer, 1991). [...]

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Augmented Reality

August 10, 2010 – 11:06 pm

Augmented reality is a new field of research that concentrates on integrating virtual objects into the real world. These virtual objects are computer graphics displayed so that they merge with the real world. Although in its infancy, Augmented reality holds out the promise of enhancing people’s ability to perform certain tasks. As sensing and computing [...]

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Sheena Iyegnar on the Art of Choosing

August 6, 2010 – 12:17 am

One of the world’s leading experts on choice, Sheena Iyengar talks about fundamental differences in how the idea of choice differs across different countries and cultures. Citing various interesting examples from her research spanning a more than 15 years, she explains the assumptions which inform the American view of choice and how too much choice [...]

Posted in Psychology, Quick Posts, Videos | Comments (0)

John Underkoffler talks about and demos his spatial UI

July 22, 2010 – 10:46 pm

John Underkoffler starts of by talking about how, around twenty five years ago, the Macintosh fundamentally changed the way people thought about computation, computers and how they used them, and that it was such a radical change that the early Macintosh development team had to write an entirely new OS from ground up for it. [...]

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