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Science News Archive December 2020 - Page 22


Page 22 of 39

Study: teacher performance measures may penalize Black educators

A recent study by Matthew P. Steinberg and Lauren Sartain found that classroom observation scores for Black teachers in Chicago Public Schools are driven by school and classroom factors, such as student poverty and academic achievement, rather than teacher effectiveness. The study suggests that these scores may lead to disproportionate...

SourceAmerican Educational Research Association·JournalEducational Evaluation and Policy Analysis·DateDec 10, 2020

New treatment could spare early-stage rectal cancer patients life-altering side effects

A new treatment approach called 'organ preservation' uses radiotherapy followed by local keyhole surgery to remove only the part of the rectum affected by cancer. Patients who received this treatment reported fewer side effects, such as diarrhoea and the need for a permanent colostomy bag, compared to those who underwent major surgery.

SourceCancer Research UK·JournalThe Lancet Gastroenterology & Hepatology·DateDec 10, 2020

Bosses need appreciation, too

A recent study found that feeling appreciated by subordinates boosts the energy and optimism of supervisors, leading to higher levels of psychological well-being and positive behaviors at work. The research suggests that external validation can be particularly powerful for supervisors who lack internal validation.

SourceUniversity of Central Florida·JournalJournal of Management·DateDec 10, 2020

The Journal of Nuclear Medicine celebrates 60 years of research

The Journal of Nuclear Medicine has published a special supplement commemorating six decades of leadership in the field, featuring influential manuscripts that shaped the future of medicine. The supplement highlights landmark papers on PET, Anger camera, and fusion PET/CT, as well as the journal's past editors and associate editors.

SourceSociety of Nuclear Medicine and Molecular Imaging·JournalJournal of Nuclear Medicine·DateDec 10, 2020

Essential oral healthcare during the COVID-19 pandemic

The COVID-19 pandemic has underscored the importance of defining essential oral healthcare. A layered approach to essential oral healthcare allows for categorization and prioritization with available resources in mind, recognizing basic oral healthcare as an integral component of a healthcare system's essential services. The Internatio...

Predicting heart disease from the skin

A study published in Scientific Reports reveals that mutations in a gene underlying a rare skin disorder can also lead to arrhythmogenic right ventricular cardiomyopathy, a serious heart disease. The findings indicate that the genetic underpinnings of skin disorders at birth may help predict future heart problems.

SourceThomas Jefferson University·JournalScientific Reports·DateDec 10, 2020

A biased evaluation of employees' performance can be useful for employers

A new model suggests that biased evaluations can be useful for motivating employees, particularly those with high career concerns. The ideal evaluator should be stricter on capable employees but more lenient on less capable ones. This approach can be applied to various scenarios, such as organizing internships.

SourceNational Research University Higher School of Economics·JournalJournal of Economic Behavior & Organization·DateDec 10, 2020

Research shows impact of bariatric surgery on cardiovascular disease risk in obese teens

A recent study published in Surgery for Obesity and Related Diseases found that bariatric surgery significantly reduced the long-term risk of cardiovascular disease in teenagers with type 2 diabetes. The study compared two cohorts of adolescents with type 2 diabetes over a five-year period, with results showing that treatment with bari...

SourceChildren's Hospital Colorado·JournalSurgery for Obesity and Related Diseases·DateDec 10, 2020

Genomic analysis of early SARS-CoV-2 outbreak in Boston shows role of superspreading events

A genomic analysis of early SARS-CoV-2 outbreaks in Boston found that a small number of importations led to most cases, while superspreading events played a significant role in the spread of the virus. The study tracked the downstream effects of these events and highlights the importance of prevention and mitigation strategies.

Human egg cells are imperfect surprisingly often

A study published in American Journal of Human Genetics found that more than 7% of human oocytes have exchangeless chromosome pairs, indicating a high level of meiotic recombination failure. The research suggests that these errors are common and not affected by maternal age.

SourceCell Press·JournalAmerican Journal of Human Genetics·DateDec 10, 2020