Recurrence quantification analysis (RQA) is a time-series analysis method that uses autocorrelation properties of typing data to detect regularities within the writing process. The following paper first gives a detailed introduction to RQA and its application to time series data. We then apply RQA to keystroke logging data of first and foreign…

In the boundary change paradigm (Rayner, 1975), when a reader's eyes cross an invisible boundary location, a preview word is replaced by a target word. Readers are generally unaware of such changes due to saccadic suppression. However, some readers detect changes on a few trials and a small percentage of them detect many changes. Two experiments…

In this paper we explored text production differences in an expository text production task between writers who looked mainly at the keyboard and writers who looked mainly at the monitor. Eye-tracking technology and keystroke-logging were combined to systematically describe and define these two groups in respect of the complex interplay between…

There are few studies of the impact of ubiquitous computing on high school science, and the majority of studies of ubiquitous computing report only on the early stages of implementation. The present study presents data on 3 high schools with carefully elaborated ubiquitous computing systems that have gone through at least one "obsolescence cycle"…

As educators become more interested in the use of qualitative methods, a major concern is the management of the large amounts of textual data during analysis. The efficiency and possibly the effectiveness of manual systems, i.e., color-coded index cards and wall-mounted systems, are reduced as the amount of textual data increases. An emerging…

This paper describes the results of a study of the microcomputer use patterns reflected by more than 13,000 users' records from the microcomputer laboratory at Western Kentucky University for 1983 to 1986. The data analyzed focused on: (1) numbers of users; (2) frequent user groups; (3) sex differences; (4) prime time usage; (5) the use of…