http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. In the face of reports about the ills livestock generate for the climate, environment and health, a new study published in the December issue of the journal Current Opinion in Environmental Sustainability emphasizes that livestock production in developing and developed countries are very different animals. http://www.physorg.com/news179741681.html Space & Earth Fri, 11 Dec 2009 08:16:08 EST news179741681 Curiosity plays a big part in preschoolers' lives. A new study that explored why young children ask so many "why" questions concludes that children are motivated by a desire for explanation. http://www.physorg.com/news177318529.html Medicine & Health Fri, 13 Nov 2009 16:40:01 EST news177318529 Many parents of preschoolers struggle with their children's fears of real and imaginary creatures. A new study offers some ideas on how they can better manage their children's worries. http://www.physorg.com/news177318356.html Medicine & Health Fri, 13 Nov 2009 13:10:02 EST news177318356 Most adolescents who belong to an ethnic minority group wrestle not only with their self-esteem (like most teens), but also with identity issues unique to their ethnic group, such as dealing with social stigma. A new study tells us that young people's ethnic pride may affect their mental health. http://www.physorg.com/news177311944.html Medicine & Health Fri, 13 Nov 2009 08:50:03 EST news177311944 Most children actively notice and think about race. A new study has found that children develop an awareness about racial stereotypes early, and that those biases can be damaging. http://www.physorg.com/news177318448.html Medicine & Health Fri, 13 Nov 2009 08:50:01 EST news177318448 A new study has found that young people feel differently about two types of parental control, generally viewing a type of control that's thought to be better for their development more positively. However, when parents are very controlling, young people no longer make this distinction and view both types of parental control negatively. http://www.physorg.com/news177317479.html Medicine & Health Fri, 13 Nov 2009 07:30:01 EST news177317479 Societal and technological changes have taken place at a dizzying pace over recent decades. A new cross-cultural study aimed to determine whether these dramatic changes have had an effect on the thinking skills that are learned over the course of childhood. http://www.physorg.com/news177311781.html Medicine & Health Fri, 13 Nov 2009 05:18:22 EST news177311781 American infants and toddlers watch TV an average of two hours a day, and much of the programming is billed as educational. A new study finds that children under age 3 learn less from these videos that we might think -- unless there's an adult present to interact with them and support their learning. http://www.physorg.com/news172216663.html Medicine & Health Tue, 15 Sep 2009 08:30:02 EST news172216663 As children go back to school this fall, a new cross-cultural study finds that for both Chinese and American middle schoolers, students who feel supported by their teachers tend to have higher self-esteem, and those who don't feel supported by fellow students are more likely to be depressed. http://www.physorg.com/news172216810.html Other Sciences Tue, 15 Sep 2009 07:40:01 EST news172216810 More than a third of American infants and toddlers live in homes where the television is on most or all the time, even if no one's watching. A new study looks for the first time at the effect of background TV on interactions between parents and young children -and finds that the effect is negative. http://www.physorg.com/news172216142.html Medicine & Health Tue, 15 Sep 2009 07:10:02 EST news172216142 Previous research has found that children raised in homes without a biological father have sex earlier than children raised in traditional nuclear families. Now a new study that used a novel and complex design to investigate why this is so challenges a popular explanation of the reasons. http://www.physorg.com/news172215741.html Medicine & Health Tue, 15 Sep 2009 07:10:02 EST news172215741 Two new studies explore how discipline changes during childhood and adolescence, and what family factors affect those changes. They conclude that when parents use physical discipline through childhood, their children experience more behavior problems in adolescence. http://www.physorg.com/news172215316.html Medicine & Health Tue, 15 Sep 2009 06:50:02 EST news172215316 (PhysOrg.com) -- Personality traits associated with chronic worrying can lead to earlier death, at least in part because these people are more likely to engage in unhealthy behaviors, such as smoking, according to research from Purdue University. http://www.physorg.com/news169814743.html Medicine & Health Tue, 18 Aug 2009 12:00:01 EST news169814743 It's easy to explain why we act a certain way by saying "it's in the genes," but a group of University of Iowa scientists say the world has relied on that simple explanation far too long. http://www.physorg.com/news167319952.html Medicine & Health Mon, 20 Jul 2009 15:30:03 EST news167319952 Children raised in institutions are more likely to lag physically, socially, and cognitively, but little is known about what happens to children's brains when they live in institutions. Now a new study finds that placing institutionalized children in high-quality foster care may improve their brain activity. http://www.physorg.com/news166881817.html Medicine & Health Wed, 15 Jul 2009 17:10:02 EST news166881817 In the United States, adolescence is a time when many teens become less interested in academics. A new longitudinal study has found that this disengagement is greater for American teens than for Chinese teens. http://www.physorg.com/news166885194.html Medicine & Health Wed, 15 Jul 2009 14:00:35 EST news166885194 Memory probably begins during the prenatal period, but little is known about the exact timing or for how long memory lasts. Now in a new study from the Netherlands, scientists have found fetal short-term memory in fetuses at 30 weeks. http://www.physorg.com/news166878043.html Medicine & Health Wed, 15 Jul 2009 12:01:17 EST news166878043 the ability to think about the minds and mental states of others -is essential for human beings. In the last decade, a group of regions has been discovered in the human brain that are specifically used for social cognition. A new study in the July/August 2009 issue of the journal Child Development investigates these brain regions for the first time in human children. The study has implications for children with autism. http://www.physorg.com/news166867075.html Medicine & Health Wed, 15 Jul 2009 10:30:01 EST news166867075 Children develop social skills by learning how to understand others' thoughts and feelings, or their theory of mind. A new study of EEGs of 4-year-olds shows that theory of mind changes are related to the functional development of two parts of the brain -- the dorsal medial prefrontal cortex and the temporal-parietal juncture. These findings are the first to show that these specialized neural circuits may be there as early as the preschool years. http://www.physorg.com/news166866858.html Medicine & Health Wed, 15 Jul 2009 09:30:02 EST news166866858 Ask middle-school students if they are popular or make friends easily, they likely will depend on social comparisons with their peers for an answer. Such reliance on the perceived opinions of others, or reflected self-appraisals, has long been assumed, but new evidence supporting this claim has now been found in the teen brain. http://www.physorg.com/news166866792.html Medicine & Health Wed, 15 Jul 2009 09:10:01 EST news166866792 When a dad changes diapers and makes pediatrician's appointments, he's more likely to stay interested and involved when his child makes the transition to school, said a new University of Illinois study that explores the role of parent involvement on student achievement. http://www.physorg.com/news164902017.html Medicine & Health Mon, 22 Jun 2009 15:07:32 EST news164902017 (PhysOrg.com) -- One-third of all children born in the United States are the result of unintended pregnancies and not only do these children receive less attention and warmth from their parents than children whose births were planned, so do their older siblings, a new study shows. http://www.physorg.com/news160326614.html Other Sciences Thu, 30 Apr 2009 16:11:14 EST news160326614 (PhysOrg.com) -- Your 7-year-old may understand that a positive attitude is an asset when taking a spelling test, doing a math problem or tackling a science lesson. But don't expect a kindergartner to make that link. http://www.physorg.com/news156624601.html Medicine & Health Wed, 18 Mar 2009 19:50:22 EST news156624601 Millions of American teenagers participate in Girl Scouts, Boy Scouts, 4-H, and other programs designed to develop responsibility in young people. A new study suggests that it's not the fun and games of these programs, but the tough tasks -those that ask young people to make sacrifices and do difficult things for the good of the group -that are most likely to foster responsibility and self-discipline. http://www.physorg.com/news153127961.html Medicine & Health Fri, 06 Feb 2009 07:33:13 EST news153127961 Adverse experiences early in life can lead to minor childhood behavior problems, which can grow into serious acts of teen violence, according to new research. This "cascading effect" of repeated negative incidents and behaviors is the focus of an article in the November/December edition of the journal Child Development. http://www.physorg.com/news145859746.html Medicine & Health Fri, 14 Nov 2008 04:35:46 EST news145859746