Choice behavior combines discrimination between distinctive outcomes, preference for specific outcomes and relative valuation of comparable outcomes. Previous work has focused on one component (i.e., preference) disregarding other influential processes that might provide a more complete understanding. Animal models of choice have been explored primarily utilizing extensive training, limited freedom for multiple decisions and sparse behavioral measures constrained to a single phase of motivated action. The present study used a paradigm that combines different elements of previous methods with the goal to distinguish among components of choice and explore how well components match predictions based on risk-sensitive foraging strategies. In order to analyze discrimination and relative valuation, it was necessary to have an option that shifted and an option that remained constant. Shifting outcomes among weeks included a change in single-option outcome (0 to 1 to 2 pellets) or a change in mixed-option outcome (0 or 5 to 0 or 3 to 0 or 1 pellets). Constant outcomes among weeks were also mixedoption (0 or 3 pellets) or single-option (1 pellet). Shifting single-option outcomes among weeks led to better discrimination, more robust preference and significant incentive contrast effects for the alternative outcome. Shifting multi-options altered choice components and led to dissociations among discrimination, preference, and reduced contrast effects. During extinction, all components were impacted with the greatest deficits during the shifting mixed-option outcome sessions. Results suggest choice behavior can be optimized for one component but suboptimal for others depending upon the complexity of alterations in outcome value between options.
An analysis of Stokely Carmichael’s dissociation of “racism” attempted at UC Berkeley on October 29, 1966 extends the utility of Perelman and Olbrechts-Tyteca’s “dissociation of concepts” for those seeking racial justice. I offer a new term “subversive dissociations” to theorize the foundations of racist dominant narratives as what Perelman and Olbrechts-Tyteca call “linguistic common property.” This move reframes dissociative challenges to dominant narratives as attempts to counter other dissociations and thus makes available a set of tools outlined in The New Rhetoric for that purpose. Dissociation emerges as a dynamic anti-racist strategy.
An analysis of Stokely Carmichael’s dissociation of “racism” attempted at UC Berkeley on October 29, 1966 extends the utility of Perelman and Olbrechts-Tyteca’s “dissociation of concepts” for those seeking racial justice. I offer a new term “subversive dissociations” to theorize the foundations of racist dominant narratives as what Perelman and Olbrechts-Tyteca call “linguistic common property.” This move reframes dissociative challenges to dominant narratives as attempts to counter other dissociations and thus makes available a set of tools outlined in The New Rhetoric for that purpose. Dissociation emerges as a dynamic anti-racist strategy.
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