Food-deprived Wistar rats were exposed to a fixed-time (FT) 60-s food delivery schedule until they developed schedule-induced drinking. Rats were matched in pairs according to their licking rates and were designated master or yoked at random. Every fifth lick by master rats was followed by an electric shock during two signalled 5-min periods, which ran concurrently with the food delivery schedu...

Internet-based Advanced Traveler Information Services (ATIS) provide the urban traveler with estimated travel times based on current roadway congestion. Survey research indicates that the vast majority of current ATIS users are satisfied consumers who feel they save time by utilizing these services on a regular basis. However, in numerous field experiments and simulation studies, ATIS users exp...

Repository Citation Rydberg, Nels, "The Effect of self-controlled practice on forearm passing, motivation, and affect in women's volleyball players" (2011). Motor learning research has suggested that self-controlled practice (or " autonomy ") leads to more effective learning of motor tasks. Debate continues, however, as to why. Most motor behaviorists maintain the better learning is due to cogn...

In this article we suggest a method of evaluating learner expertise based on assessment of the content of working memory and the extent to which cognitive load has been reduced by knowledge retrieved from long-term memory. The method was tested in an experiment with an elementary algebra tutor using a yoked control design. In the learner-adapted experimental group, instruction was dynamically t...

Many stressors elicit changes in corticotrophin (CRH), enkephalin (ENK), and neurotensin (NT) mRNA levels within the medial parvocellular region of the paraventricular nucleus of the hypothalamus (mpPVN), and the pattern of changes in mRNA levels appears to depend on the physical characteristics of the stressor. We questioned whether psychologically distinct stressors would cause different patt...

Two experiments using the conditioned suppression procedure were carried out in order to test the role of direct context -US association in differential inhibition. In Experiment 1, experimental groups differed in inter-trial interval (ITI) and shock density. The results showed that only the short ITI group (higher density shock) passed both retardation and summation tests. Experiment 2 was des...

We have studied the influence of pre-training psychological stress on the expression of c-fos mRNA following long-term spatial memory retrieval. Rats were trained to learn the location of a hidden escape platform in the radial-arm water maze, and then their memory for the platform location was assessed 24 h later. Rat brains were extracted 30 min after the 24-h memory test trial for analysis of...