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How much of the cocaine market are we missing? Insights from respondent-driven sampling in a mid-sized American city.
The results suggest that estimates based only on people who were arrested and/or treated in the past year would have to be inflated by 100-200% to capture the market totals, although in theory the inflation factor could be reduced to 23-32% by supplementing data on arrestees and treatment populations with household data. Expand
Societal Burden of Substance Abuse
This article delves into the U.S. substance abuse figures in detail, rather than briefly touching on estimates from multiple countries, because the focus is on understanding how to interpret the figures, not on international comparisons. Expand
Marijuana Legalization: Lessons from the 2012 State Proposals
On November 6, 2012, citizens in three U.S. states will vote on whether to legalize production, distribution, possession, and sale of marijuana for general—not just medical—use. Legalization isExpand
Cultural Relevance in MOOCs: Asking About Socioeconomic Context
During a qualitative study of 24 self-regulated learners from population groups underrepresented in MOOCs, a short U.S.-centric demographic questionnaire was piloted, suggesting that a large-scale survey designed for both cross-national and country-specific analyses would provide valuable information to MOOC researchers. Expand
Crowd Coach
Crowd Coach, a system that enables workers to receive peer coaching while on the job, is presented and it is found that Crowd Coach enhances workers' speed without sacrificing their work quality, especially in audio transcription tasks. Expand
Crowd Work on a CV? Understanding How AMT Fits into Turkers' Career Goals and Professional Profiles
This work extends existing understandings of who crowd workers are and why they crowd work by seeking to better understand how crowd work factors into Turkers' professional profiles, and how it can subsequently better support crowd workers in their career advancement. Expand
A Preliminary Look at MOOC-associated Facebook Groups: Prevalence, Geographic Representation, and Homophily
Results suggest that a non-trivial number of MOOC students engage in Facebook groups, that learners from a number of non-U.S. locations are disproportionately likely to participate in such groups, and that the groups display both location and language homophily. Expand
Learning to Listen: Critically Considering the Role of AI in Human Storytelling and Character Creation
In this opinion piece, we argue that there is a need for alternative design directions to complement existing AI efforts in narrative and character generation and algorithm development. To make ourExpand