Aggressive behavior brings emotional pain to the sadist

People with sadistic personality traits tend to be aggressive, but only enjoy their aggressive acts if it harms their victims. According to a series of studies of over 2000 people, these actions ultimately leave sadists feeling worse than they felt before their aggressive act. The research appears in Personality and Social Psychology Bulletin, published by the Society for Personality and […]

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New study on cognitive archaeology and tactile responses to the lithic industry

The Paleoneurobiology group of the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), led by Emiliano Bruner, has just published, in collaboration with the Museo de la Evolución Humana (MEH) in Burgos and the company Sociograph from Valladolid, a new paper on cognitive archaeology in which the hand-tool relationship is studied, analyzing the geometry of the tools, the grasp […]

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How cholera bacteria make people so sick

The enormous adaptability of the cholera bacterium explains why it is able to claim so many victims. Professor Ariane Briegel from the Leiden Institute of Biology has now discovered that this adaptability is due to rapid sensory changes in the bacterium. Her research has been published in PNAS. The Vibrio cholerae bacterium is the cause of cholera, a devastating illness […]

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Should pacemakers, defibrillators be recycled—and reused in others?

Reuse and recycle. Americans employ the concept on nearly everything. Now, medical researchers are working hard to apply it to pacemakers and defibrillators. Millions of sick people in low-income nations suffer or die each year because they can’t afford these implantable medical devices that could help regulate their heartbeat. Researchers argue that many people could be saved if they had […]

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Depression, anxiety may take same toll on health as smoking and obesity

An annual physical typically involves a weight check and questions about unhealthy habits like smoking, but a new study from UC San Francisco suggests health care providers may be overlooking a critical question: Are you depressed or anxious? Anxiety and depression may be leading predictors of conditions ranging from heart disease and high blood pressure to arthritis, headaches, back pain […]

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A role for microRNAs in social behavior

The recent discovery of microRNAs as key regulators of biological processes has fueled an explosion of research activity into their function in health and disease. Researchers have now uncovered a microRNA cluster that regulates synaptic strength and is involved in the control of social behaviour in mammals. The researchers presume that their discovery may point to new therapeutic strategies for […]

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Growing a brain: Two-step control mechanism identified in mouse stem cells

Scientists have identified two distinct control mechanisms in the developmental transition of undifferentiated stem cells into healthy brain cells. This fundamental research using mice may inform regenerative medicine treatments for neurodegenerative diseases and spinal cord injuries, in the future. When an embryo develops, stem cells differentiate into all the types of cells that the adult will need. Neural stem cells […]

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Research suggests path to vaccine or drug for late-onset Alzheimer’s

UT Southwestern researchers have succeeded in neutralizing what they believe is a primary factor in late-onset Alzheimer’s disease, opening the door to development of a drug that could be administered before age 40, and taken for life, to potentially prevent the disease in 50 to 80 percent of at-risk adults. Apolipoprotein E (ApoE) is a protein that carries fatty substances […]

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