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Trending Papers in populations and evolution

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A meta-analysis of twin studies finds that genes significantly contribute to differences in self-control: the overall heritability is about 60%
From Paper: The heritability of self-control: A meta-analysis
Published: May 2019
  • The heritability is the same for boys and girls, and across age
  • The results revealed an overall identical twin correlation of 0.58, and an overall fraternal twin correlation of 0.28, resulting in a heritability estimate of 60%
Submitted by Patrick Joyce
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A Dynamical Framework for Modeling Fear of Infection and Frustration with Social Distancing in COVID-19 Spread
Authors:
Matthew D. Johnston, Bruce Pell
Published: Aug 2020
In this paper, we introduce a novel modeling framework for incorporating fear of infection and frustration with social distancing into disease dynamics. We show that the resulting SEIR behavior-perception model has three principal modes of qualitative behavior---no outbreak, controlled outbreak, and uncontrolled outbreak. We also demonstrate that the model can produce transient and sustained waves of infection consistent with secondary outbreaks. We fit the model to cumulative COVID-19 case and mortality data from several regions. Our analysis suggests that regions which experience a significant decline after the first wave of infection, such as Canada and Israel, are more likely to contain secondary waves of infection, whereas regions which only achieve moderate success in mitigating the disease's spread initially, such as the United States, are likely to experience substantial secondary waves or uncontrolled outbreaks.
Submitted by Joshua Lee
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Probability of symptoms and critical disease after SARS-CoV-2 infection
Authors:
Poletti, Piero, et al
Published: Jun 2020
We quantified the probability of developing symptoms (respiratory or fever \geq 37.5 {\deg}C) and critical disease (requiring intensive care or resulting in death) of SARS-CoV-2 positive subjects. 5,484 contacts of SARS-CoV-2 index cases detected in Lombardy, Italy were analyzed, and positive subjects were ascertained via nasal swabs and serological assays. 73.9% of all infected individuals aged less than 60 years did not develop symptoms (95% confidence interval: 71.8-75.9%). The risk of symptoms increased with age. 6.6% of infected subjects older than 60 years had critical disease, with males at significantly higher risk.
Retrieved from arxiv

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