Though individual categorization or decision processes have been studied separately in many previous investigations, few studies have investigated how they interact by using a two-stage task of first categorizing and then deciding. To address this issue, we investigated a categorization-decision task in two experiments. In both, participants were shown six faces varying in width, first asked to categorize the faces, and then decide a course of action for each face. Each experiment was designed to include three groups, and for each (...) group, we manipulated the probabilistic contingencies between stimulus, category assignments, and decision consequences. For each group, each participant received three different sequences of category response, category feedback, decision response, and decision feedback. We found that participants were only partially responsive in the appropriate directions to the contingencies assigned to each group. Comparisons of results from different sequences provided evidence for empirical interference effects of categorization on decisions. The empirical interference effect is defined as the difference between the probability of taking a hostile action in decision-alone conditions and the total probability of taking a hostile action in categorization-decision conditions. To test competing accounts for multiple empirical results, including two-stage choice probabilities and empirical interference effects, we compared a quantum cognition model versus a two-stage exemplar categorization model at both aggregate and individual levels. Using a Bayesian information criterion, we found that the quantum model provided an overall better model fit than the exemplar model. Although both models predicted empirical interference effects, the exemplar model was able to generate probabilistic deviation by incorporating category information of the first stage into the feature representation of the subsequent decision stage, while the quantum model produced interference effect by superposition, measurement, and quantum entanglement. (shrink)

Transcultural comparisons taking the differences and commonalities into consideration in the fields of mental health and ill mental health have always been a focus of scientific interest. The ‘East’ and ‘West’ comparisons in this regard, could be the one most widely deliberated. ‘East and West’, as a human-made conceptual construct, has evolved to signify many social, cultural, political, economic and psychological realities and meanings, beyond its geographical references. Such conceptualizations both reflect and re-construct our realities. -/- Beyond the inequalities and (...) discrepancies in resources, the ‘East and West’ dualism has an impact on mental health theory and praxis in a many different ways. The range, content, patterns and expression of psychopathology and psychiatric symptomatology; the explanatory models of mental disorders; the diagnostic and classification systems; the psychopharmacological and psychotherapeutical interventions; the role of family and psychosocial support systems; basic conceptualizations of mental health and disease are some of the main areas of diversity. -/- This chapter, after briefly discussing the historical roots of the conceptualization of ‘East and West’, will be focused on the relations of mental health and ill mental health with this and related conceptualizations. It is concluded that, in this day of globalization, to improve the quality of psychiatric theory and praxis within a framework of high ethical standards, a paradigm focusing on the unity in diversity and embracing a non-dualistic, non-categorical, and non-hierarchical humanistic approach to cultural differences would bring all the colours of humanity and therefore psychiatry onto the canvas. (shrink)