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Mahfoud, Ziyad; Ghandour, Lilian; Ghandour, Blanche; Mokdad, Ali H.; Sibai, Abla M. – Field Methods, 2015
Findings on the reliability and cost-effectiveness of the use of cellular phones vis-à-vis face-to-face interviews in investigating health behaviors and conditions are presented for a national epidemiological sample from Lebanon. Using self-reported responses on identical questions, percentage agreement, ? statistics, and McNemar's test were used…
Descriptors: Telephone Surveys, Interviews, Surveys, Responses
Waters, Andrew; Studer, Christoph; Baraniuk, Richard – Journal of Educational Data Mining, 2014
Identifying collaboration between learners in a course is an important challenge in education for two reasons: First, depending on the courses rules, collaboration can be considered a form of cheating. Second, it helps one to more accurately evaluate each learners competence. While such collaboration identification is already challenging in…
Descriptors: Cooperation, Large Group Instruction, Online Courses, Probability

Schutz, Howard G.; Rucker, Margaret H. – Educational and Psychological Measurement, 1975
Data from 2-, 3-, 6-, and 7-point rating scales were analyzed to determine whether scale length affected response patterns. Results indicate that data configurations are relatively invariant with changes in number of scale points. (Author)
Descriptors: Data Collection, Factor Analysis, Questionnaires, Rating Scales
Casey, John J. – IAR Res Bull, 1969
The two problems examined were the effect of observers in the typical classroom and the possibility of regional bias in local observers' data. (LN)
Descriptors: Classroom Observation Techniques, Comparative Analysis, Data Collection, Educational Quality