Cross-modality contrast: Exteroceptive context habituation enhances taste neophobia and conditioned taste aversions

The relationship between absolute and relative stimulus novelty was examined within the context of the conditioned taste aversion paradigm in which the relative novelty of the conditioned interoceptive stimulus was manipulated by differential exteroceptive context habituation. Rats received similar isolation histories but either 5 or 30 days of habituation to the test environment prior to treatment. One group was administered lithium chloride following saccharin consumption, a second group was administered isotonic saline following saccharin consumption, and a third group was administered saline after water consumption. The animals habituated for 30 days exhibited greater conditioned avoidance and greater neophobic avoidance of saccharin than did animals habituated for only 5 days. The results are interpreted in terms of a cross-modality stimulus contrast effect which implicates context habituation as an important parameter of both taste neophobia and taste aversion learning.     

Cooperating Teachers' Perspectives Under Scrutiny: A comparative analysis of Australia and Canada

The ways in which cooperating teachers give shape and meaning to their work in practicum settings is one of the most critical elements of initial teacher education. This international comparison draws upon surveys of Australian and Canadian cooperating teachers. The global contrast highlights taken‐for‐granted assumptions in local settings that in some instances are cause for celebration and in other instances concern. The comparison of the two settings illustrates, among other things: some striking similarities in the profiles of cooperating teachers; important differences with respect to the cooperating teachers' preparation and remuneration for their role in practicum settings; and deeper complexities regarding the relationship between schools and universities.