background preloader

Visualization Evaluation

Facebook Twitter

Analyzing Likert Data. Introduction Over the years, numerous methods have been used to measure character and personality traits (Likert, 1932). The difficulty of measuring attitudes, character, and personality traits lies in the procedure for transferring these qualities into a quantitative measure for data analysis purposes. The recent popularity of qualitative research techniques has relieved some of the burden associated with the dilemma; however, many social scientists still rely on quantitative measures of attitudes, character and personality traits. In response to the difficulty of measuring character and personality traits, Likert (1932) developed a procedure for measuring attitudinal scales. The original Likert scale used a series of questions with five response alternatives: strongly approve (1), approve (2), undecided (3), disapprove (4), and strongly disapprove (5). He combined the responses from the series of questions to create an attitudinal measurement scale.

Likert-Type Versus Likert Scales. DMZ3430.pdf. MeasuringU : Usability, Customer Experience & Statistics. PhDThesis2001_hornbaek.pdf. Measuring Usability with the USE Questionnaire. Measuring Usability with the USE Questionnaire By Arnold M. Lund There are a variety of issues that tend to recur in the life of a user interface designer. I recall the first time I was asked to write performance requirements for a user interface. Over the years I have worked with colleagues at Ameritech (where the work began), U.S. General Background Subjective reactions to the usability of a product or application tend to be neglected in favor of performance measures, and yet it is often the case that these metrics measure the aspects of the user experience that are most closely tied to user behavior and purchase decisions. Finally, it became clear that we could eliminate all the design problems and still end up with a product that would fail in the marketplace.

Building on that research, I decided to develop a short questionnaire that could be used to measure the most important dimensions of usability for users, and to measure those dimensions across domains. How It Developed Usefulness. Measuring satisfaction: Beyond the usability questionnaire. Measuring user satisfaction A common mistake made by novice usability test moderators is to think that the aim of a usability test is to elicit a participant's reactions to a user interface.

Experienced test moderators realise that a participant's reaction is just one measure of usability. To get the complete usability picture, we also need to consider effectiveness (can people complete their tasks?) And efficiency (how long do people take?). These dimensions of usability come from the International Standard, ISO 9241-11, which defines usability as: "Extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use.

" The ISO definition of usability makes it clear that user satisfaction is just one important dimension of usability. (PDF document) and you need to measure all three to get a rounded measure of usability. Importance of collecting satisfaction measures The Microsoft Desirability Toolkit. Usability and user experience surveys. This article or section is a stub. A stub is an entry that did not yet receive substantial attention from editors, and as such does not yet contain enough information to be considered a real article. In other words, it is a short or insufficient piece of information and requires additions. 1 Introduction According to Perlman (2009), “Questionnaires have long been used to evaluate user interfaces (Root & Draper, 1983).

See also: learning surveys 2 List of web usability questionnaires We didn't find (yet) any specific web usability questionnaires, see below for generic usability survey instruments and that can be adapted to specific websites. 3 List of usability and user experience questionnaires 3.1 User Interface Usability Evaluation with Web-Based Questionnaires Author: Gary Perlman (2009) Available through the User Interface Usability Evaluation with Web-Based Questionnaires page, either as online interface or as a a set of Perl scripts that you can install in your own server.

Usefulness. Evaluating the usability of visualization methods in an exploratory geovisualization environment - International Journal of Geographical Information Science - Volume 20, Issue 4. The use of new representation forms and interactive means to visualize geospatial data requires an understanding of the impact of the visual tools used for data exploration and knowledge construction. Use and usability assessment of implemented methods and tools is an important part of our efforts to build this understanding.

Based on an approach to combine visual and computational methods for knowledge discovery in large geospatial data, an integrated visualization‐geocomputation environment has been developed based on the Self‐Organizing Map (SOM), the map and the parallel coordinate plot. This environment allows patterns and attribute relationships to be explored. A use and usability assessment is conducted to evaluate the ability of each of these visual representations to meet user performance and satisfaction goals. Keywords Related articles View all related articles.