SOME DETERMINANTS OF CHANGES IN PREFERENCE OVER TIME

Some determinants of changes in preference over time.

Results of longitudinal studies suggest that the stability of preferences varies across individuals, although it is unclear what variables account for these differences. We extended this work by conducting periodic assessments of preference for leisure activities over 3 to 6 months with 10 adults with developmental disabilities. Although previous research has collectively shown that preferences...

Determinants of changes in FEV1 over a workshift.

Measurement of workshift change in FEV1 is a useful predictor of respiratory disease among cotton workers and grainhandlers. Certain factors affect this measurement and must be considered in the analysis. Response varies with the time of day at which the measurement is taken. Tobacco smoking, immediate skin reactivity to common allergens, age, and initial level of FEV1 are other factors that mu...

Lifecycle Changes in the Rate of Time Preference : Testing

Changes in Foreign Language Skills Over Time

Foreign language professionals invest considerable time and effort in acquiring foreign language skills. Of key interest is how these skills change over time, and which sustainment, or language training activities, are efficacious in maintaining or improving proficiency. This paper discusses the results of mining more than 800 test/re-test records of foreign language professionals. Analyses inv...

Changes in Webpage Structure over Time

We present an analysis of the prevalence and nature of structural changes of websites. We study the evolution of some 12,000 webpages from 20 different websites over a period of five months. The websites cover a wide spectrum in both types of content and volume of traffic. We find that the structure of webpages from lower-volume sites changes very little, while webpages from high-volume sites c...