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University of Southern California


Too much information? Study shows how ignorance can be influential

Researchers Isabelle Brocas and Juan D. Carrillo present a situation where one party controls public opinion despite having access to the same information as others. This phenomenon, known as 'influence through ignorance,' occurs when power comes from controlling the flow of public information rather than possessing private information.

SourceUniversity of Southern California·JournalThe RAND Journal of Economics·DateMar 24, 2008

'Lazy eye' treatment shows promise in adults

Researchers from the US and China have confirmed the effectiveness of a simple treatment for amblyopia in laboratory and clinical trials. The treatment, which involves training on a visual task, has shown promising results in improving vision and challenging traditional theories about critical periods.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateMar 3, 2008

Making (accurate predictions of) waves

A comprehensive review of tsunami hazards concludes that the 2004 catastrophe was not the worst possible in many Indian Ocean borderlands. The study highlights areas of high risk, including Madagascar, the Mascarene Islands, and Africa's east coast, which could be affected by tsunamis generated by earthquakes in South Sumatra and Java.

SourceUniversity of Southern California·JournalGeophysical Journal International·DateJan 27, 2008

USC researchers identify mechanism that controls activation of stem cells during hair regeneration

Researchers at USC have identified a novel signaling mechanism that coordinates stem cell activity and regulates hair regeneration in large populations of hairs in animal models. The study found that periodic expression of bone morphogenetic protein (Bmp) in the skin macro-environment is key to coordinated hair stem cell activation.

Greenhouse ocean may downsize fish

The Bering Sea's rich food web could fray as algae adapt to greenhouse conditions, affecting top predators like pollock and hake. A shift away from diatoms towards smaller phytoplankton could undermine the biological pump, making the ocean less able to soak up atmospheric carbon dioxide.

SourceUniversity of Southern California·JournalMarine Ecology Progress Series·DateJan 11, 2008

Human ancestors: more gatherers than hunters?

A recent study of chimpanzees in western Tanzania suggests that early humans may have dug potato-like foods with tools, challenging the long-held assumption that meat was more important for brain evolution. The research found that chimps only dig for roots during the rainy season, when other food sources are abundant.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateNov 12, 2007

Bus scheduling algorithm picks up the slack

A new bus scheduling algorithm, developed by a University of Southern California engineer, aims to reduce waiting times and improve transit reliability. The algorithm analyzes the impact of slack time on buses and finds that building in between 15 and 20 percent slack time is optimal, depending on total round trip travel time.

SourceUniversity of Southern California·JournalTransportation Science·DateOct 23, 2007

USC study examines effects of caregiving

A USC Davis School of Gerontology study found that caregivers showed few negative mental or physical health effects, contrary to myths about caregiving. The research analyzed ethnic differences among caregivers tending to people with dementia and found unique health risks for African-American caregivers.

SourceUniversity of Southern California·JournalAging & Mental Health·DateOct 17, 2007

Friends help friends avoid drug use

A USC study found that social network-tailored prevention curricula can significantly reduce substance use among teenagers, with a 15% decrease in high-risk teens. The program's success depends on how peer influence is channeled, with positive influences boosting participation and negative influences hindering it.

SourceUniversity of Southern California·JournalAddiction·DateOct 8, 2007

Tectonic plates act like variable thermostat

A recent PNAS study found that the current Earth system has improved heat regulation compared to 60 million years ago when small tectonic plates existed. The research suggests that plate size and number significantly affect heat loss, with smaller plates leading to greater heat escape from the mantle.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateAug 13, 2007