Quantifying collective intelligence in human groups
https://www.pnas.org/content/118/21/e2005737118.abstract Collective intelligence (CI) is critical to solving many scientific, business, and other problems. We find strong support for a general factor of CI using meta-analytic methods in a dataset comprising 22 studies, including 5,279 individuals in 1,356 groups. CI can predict performance in a range of out-of-sample criterion tasks....
You only need these 3 data roles in a data-driven enterprise
https://laszlo.substack.com/p/you-only-need-these-3-data-roles You can justify this categorisation by asking: Who is your customer? If your customer is an executive, you are doing analytics (DSA/BI). If you work on automated models, recommender systems, and your customers are your company’s clients, you belong to a data product function (DS/MLE etc.). If your customers...
How we’re improving learning with anonymized speech data
https://blog.duolingo.com/how-were-improving-learning-with-anonymized-speech-data/ So last month, we began asking a subset of learners if they are willing to share their recorded speech with us, in order to better understand their learning process. We only collect speech data from learners who have given their permission, and we ensure that the speech data is...
Training spatial cognition enhances mathematical learning in a randomized study of 17,000 children
https://www.nature.com/articles/s41562-021-01118-4 https://psyarxiv.com/z3pb7/ https://github.com/njudd/spatialcognition Spatial and mathematical abilities are strongly associated. Here, we analysed data from 17,648 children, aged 6–8 years, who performed 7 weeks of mathematical training together with randomly assigned spatial cognitive training with tasks demanding more spatial manipulation (mental rotation or tangram), maintenance of spatial information (a visuospatial working memory...
Alcohol narrows physical distance between strangers
https://www.pnas.org/content/118/20/e2101937118 Pandemic management is likely to represent a global reality for years to come, but the roadmap for how to approach pandemic restrictions is as yet unclear. Of the restrictions enacted during COVID-19, among the more controversial surround alcohol. Like many infectious diseases, the principal mode of transmission for COVID-19...
Wise teamwork: Collective confidence calibration predicts the effectiveness of group discussion
https://www.sciencedirect.com/science/article/abs/pii/S0022103121000603 ‘Crowd wisdom’ refers to the surprising accuracy that can be attained by averaging judgments from independent individuals. However, independence is unusual; people often discuss and collaborate in groups. When does group interaction improve vs. degrade judgment accuracy relative to averaging the group’s initial, independent answers? Two large laboratory studies...
The Great Online Game
https://www.notboring.co/p/the-great-online-game James Carse, who coined the term in his 1986 book Finite and Infinite Games: A Vision of Life as Play and Possibility, wrote: The infinite game - there is only one - includes any authentic interaction, from touching to culture, that changes rules, plays with boundaries and exists solely...
Evidence-based principles for how to design effective instructional videos
https://www.sciencedirect.com/science/article/abs/pii/S2211368121000231 Drawing on research conducted by Mayer (2020), this article examines evidence-based principles for how to design effective instructional videos and shows how they are grounded in cognitive theories of learning and instruction. Principles include multimedia (present words and graphics), coherence (avoid extraneous material in slides and script), signaling (highlight...
Evidence-based principles for how to design effective instructional vidoes
https://www.sciencedirect.com/science/article/abs/pii/S2211368121000231 Drawing on research conducted by Mayer (2020), this article examines evidence-based principles for how to design effective instructional videos and shows how they are grounded in cognitive theories of learning and instruction. Principles include multimedia (present words and graphics), coherence (avoid extraneous material in slides and script), signaling (highlight...
Virtual kindergarten readiness programming for preschool-aged children: Feasibility, social validty, and preliminary impacts
https://www.tandfonline.com/doi/full/10.1080/10409289.2021.1919041 Research Findings: The global COVID-19 pandemic prevented the implementation of in-person summer learning programs designed to improve school readiness for entering kindergartners. Thus, we conducted the current study examining the feasibility, social validity, and preliminary impacts of a virtual summer learning program. Ninety-one preschoolers and their caregivers participated in...
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a collection of excerpts from interesting research, blogs, events, etc...