Model-Based Wisdom of the Crowd for Sequential Decision-Making Tasks

We study the wisdom of the crowd in three sequential decision-making tasks: the Balloon Analogue Risk Task (BART), optimal stopping problems, and bandit problems. We consider a behavior-based approach, using majority decisions to determine crowd behavior and show that this approach performs poorly in the BART and bandit tasks. The key problem is that the crowd becomes progressively more extreme as the decision sequence progresses, because the diversity of opinion that underlies the wisdom of the crowd is lost. We also consider model-based approaches to each task. This involves inferring cognitive models for each individual based on their observed behavior, and using these models to predict what each individual would do in any possible task situation. We show that this approach performs robustly well for all three tasks and has the additional advantage of being able to generalize to new problems for which there are no behavioral data. We discuss potential applications of the model-based approach to real-world sequential decision problems and discuss how our approach contributes to the understanding of collective intelligence.     

Sex Domination of Occupations and the Tendencies to Approach and Avoid Success and Failure

To test a theory that approach and avoidance imagery would be associated with both success and failure, female and male college students wrote stories to sentence cues. The sentence cues described a female or male stimulus person as succeeding or failing in one of six occupations. Two of the occupations were dominated by females, two by males, and two were approximately equal in sex domination. The imagery content of the stories yielded independent evidence of success-approach, success-avoidance, failure-approach, and failure-avoidance imagery. Success-approach and failure-avoidance imagery increased as the current male domination of the occupation increased; failure-approach imagery increased as the current female domination of the occupation increased. Success-approach imagery appeared more often in stories written by female respondents; success-avoidance imagery appeared more often in stories written by male respondents. The results were consistent with an achievement model that provides for approach and avoidance tendencies to success and failure. Differential results for the respondents of the two sexes are theoretically attributable to different weightings of the four motives mediated by the anticipated consequences of success and failure.     

The Compassionate Treatment of Animals

The compassionate treatment of animals has been the focal point of speeches and writings by one of the most influential Buddhist cleric‐scholars on the Tibetan plateau today, Khenpo Tsultrim Lodrö of Larung Buddhist Academy. This essay surveys the Khenpo's broad‐based advocacy for animal welfare and details his discrete appeals to nomads in eastern Tibet to forgo selling livestock for slaughter, to eat a vegetarian diet on religious holidays, to relinquish wearing animal fur, to protect wildlife habitat, and to liberate the lives of animals. I focus on the modernist “this worldly” dimension of his advocacy, calling attention to how Tsultrim Lodrö goes beyond traditional scare tactics that emphasize the karmic effects of negative deeds in future lives and instead invokes compassion by attending to the lived experience and suffering of animals. In doing so, the Khenpo positions Buddhism as a civilizing force in order to reform certain Tibetan customs and mitigate the influence of Chinese modernity and state marketization policies. I argue that his strategy of “reverse orientalism” appropriates state civilizational discourse and reverses its terms.     

Cerebellar-Subcortical-Cortical Systems as Modulators of Cognitive Functions

Neuropsychology Review - Over the past few decades, research has established that the cerebellum is involved in executive functions; however, its specific role remains unclear. There are numerous...