This paper addresses the issue of creating a realistic laboratory setting when evaluating the usability of mobile systems. Three laboratory-based think-aloud evaluations of the same mobile system were designed and conducted for the purpose of comparing the impact of different approaches to creating realistic laboratory environments on the results subsequently produced. The three evaluations spa...

How do experienced users extract information from a complex visualization? We examine this question by presenting experienced weather forecasters with visualizations that did not show the needed information explicitly and examining their eye movements. We replicated Carpenter & Shah (1998) when the information was explicitly available on the visualization. However, when the information was not ...

Employing mixed-method approach, this case study examined the in situ use of educational computer games in a summer math program to facilitate 4th and 5th graders’ cognitive math achievement, metacognitive awareness, and positive attitudes toward math learning. The results indicated that students developed more positive attitudes toward math learning through five-week computer math gaming, but ...

Introduction In this panel session I will be making an introductory presentation, after which we will hear from Tim McAfee and Jodi Jessen. After all of the presenters have been heard from, we will address “questions for the future”. In my talk I would like to review: (a) the value of performance measurement and the diVerent ways in which performance measurement can serve our purposes; (b) the ...

The importance of socioeconomic position, measured at multiple levels (e.g., individual, household, area) and across the life course, for studying health disparities is now well recognized (1–7). Our multilevel study (8) reported that individual-based socioeconomic measures (IBSMs) and area-based socioeconomic measures (ABSMs) together capture birth weight inequalities that otherwise would have...

Change-point detection had its origins almost sixty years ago in the work of Page, Shiryayev, and Lorden, who focused on sequential detection of a change-point in an observed process. The process was typically a model for the measured quality of a continuous production process, and the change-point indicated a deterioration in quality that must be detected and corrected. Recently, motivation fr...

As Director of the Office of Scientific Research and Development, Dr. Vannevar Bush has coordinated the activities of some six thousand leading American scientists in the application of science to warfare. In this significant article he holds up an incentive for scientists when the fighting has ceased. He urges that men of science should then turn to the massive task of making more accessible o...

Research Question: How do participants behave when asked to rate objects’ visual dimensions? Approach: Qualitative Data Analysis Method: 90 participants were asked to rate 11 objects located along a route of 1.1 km length and asked to explain their rating behaviour using a think-aloud protocol. Results: If asked to rate several objects, participants tend to stop reading the questions as a whole...