Researchers from Harvard University and the University of California, San Diego, have found an answer as part of a study.

VOA: special.2009.01.21

Maryse Bouchard says the study found that exposure could play a part in behaviors such as inattention and hyperactivity.

VOA: special.2010.05.26

Test projects have already begun, and he says the main part of the National Children's Study will begin next year.

VOA: special.2011.08.03

As part of that study, 3,000 people in different countries, mostly college students, wrote about recent crying experiences.

VOA: special.2009.01.28

As part of the study, the young men and women were asked how many hours of television or videos they watched daily.

VOA: special.2009.03.10

The National Institute of Mental Health and Kaiser Permanente Northern California also took part in the latest study.

VOA: special.2009.06.24

The Northwestern University researcher took part in a study that found a way to turn off the immune system in mice with arthritis.

VOA: special.2010.03.16

More than two thousand people between the ages of forty-five and eighty took part in the study.

VOA: special.2009.04.08

The study was part of a larger ten-year project called the Global Census of Marine Life.

VOA: special.2010.08.10

The study was part of the Women's Health Initiative organized by the National Institutes of Health.

VOA: special.2009.04.15

The National Research Council, part of the National Academies in Washington, recently published a study.

VOA: special.2010.04.27

More than seven thousand American men and women took part in the study.

VOA: special.2010.07.06

A second part of the study is planned for early next year.

VOA: special.2009.06.09

The treatment is part of a national study that combines the drug Gemzar, traditionally used for pancreatic cancer, with an experimental drug.

VOA: standard.2010.01.12

But in a new study, researchers used a vaccine aimed at a different part of the virus.

VOA: standard.2010.07.21

For the study, researchers are monitoring the implanted probes on a part of the frontal lobe called Broca's area, named after 19th century French physician Pierre Paul Broca.

VOA: standard.2010.01.15

"The critical part at the end of whatever the level of study you are going to do is to get yourself involved in something that puts you into a laboratory."

VOA: standard.2010.05.10