Schedule-induced behavior in rats: Pellets versus powder

Food-deprived rats develop polydipsia on an intermittent schedule (fixed time 60 sec) of food pellet delivery, but not on an identical schedule of food powder delivery. This result was demonstrated with separate groups receiving each type of food and was replicated using rats as their own controls. Powdered food not only prevented the development of polydipsia, but it abruptly terminated ongoing polydipsia in rats that were switched from the scheduled delivery of pellets to powder. Ethological analysis of the behavior showed that the rats receiving powder were not engaging excessively in some behavior other than drinking. After discounting several factors, we concluded that the amount of oral activity associated with feeding, which occurred immediately after food delivery, was reciprocally related to the level of drinking.     

The internship component of a teacher education program: Opportunities for learning

Abstract

Many preservice teacher education programs in recent years have increased the amount of time student teachers spend in field placements by adding an “internship “ component. An internship is typically longer than a practice teaching session and is designed as a bridge between being a student teacher and having full teaching responsibilities. This study explored the effect of an internship that had three key features: the interns were free to choose the nature of their field experience, no formal evaluation was involved, and the interns were attached to the school (or other institution) as a whole rather than a particular staff member. Under these conditions, the interns could (a) go more deeply into a specific teaching area; (b) gain greater knowledge of school culture; (c) become more familiar with school‐wide programs and activities; and (d) learn more about their distinctive interests and abilities as teachers.     

Successful journal publishing on the Internet: hit or myth?

If publishers of learned journals are going to make a success of their web publishing, they should not forget all the skills they have developed in publishing in print. This paper reviews the application of familiar journal publishing skills in the context of electronic journals or electronic editions of printed journals, and pinpoints areas where these skills apply in web publishing and where new skills are necessary.