A bike helmet suggests safety -- even if the wearer is not sitting on a bike and the helmet cannot fulfil its function. These are the findings of psychologists from the Friedrich Schiller University Jena, Germany in cooperation with the Canadian University of Victoria.
Although some studies have linked high levels of testosterone to immoral behavior, a new study published in Nature Human Behaviour finds testosterone supplements actually made people more sensitive to moral norms, suggesting that testosterone's influence on behavior is more complicated than previously thought.
USC researchers looked at 'emotion-induced blindness,' which refers to distractions caused by emotionally arousing stimuli. In four experiments using a quickly presented sequence of images, they examined how older adults prioritize emotional information. They found both younger and older adults demonstrated emotion-induced blindness, but older adults were more distracted by positive information and less distracted by negative information.
Researchers have noted excessive daytime napping can develop long before memory problems of Alzheimer's disease appear. Prior studies considered excessive daytime napping compensation for poor nighttime sleep caused by Alzheimer's-related disruptions in sleep-promoting brain regions; others argued that the sleep problems contribute to progression of the disease. But now UC San Francisco scientists have provided a new explanation for this phenomenon, showing that Alzheimer's disease directly attacks brain regions responsible for daytime.
Weber's law is the most firmly established rule of psychophysics -- the science that relates the strength of physical stimuli to the sensations of the mind. Despite being almost 200 years old, no clear way has been found to select among its many proposed explanations. Now, scientists have discovered a new psychophysical rule that allowed them to identify a unique and robust explanation of Weber's law.
Cues signaling trust and dominance are crucial for social life. Recent research from Dr. Dan Krawczyk's lab at the Center for BrainHealth® explored whether administering two chemically similar hormones known to affect social cognition -- oxytocin and vasopressin -- would influence the perception of trustworthiness and/or social dominance. This research extended previous studies on the effects of oxytocin, which had inconsistent findings and only explored its influence on perceptions of trustworthiness.
Toyohashi University of Technology researchers in cooperation with researchers at the University of Oslo measured people's perceived brightness and pupillary response after viewing glare illusions presented in a variety of different colors. A glare illusion is an optical illusion that has a luminance gradient towards the center and is perceived as brighter by the gradient. The research team found that pupil reduction for glare illusion occurs according to the degree of brightness perception.
The killing of young men by police is a leading cause of death in the United States with black men 2.5 times more likely to be killed by law enforcement over their lifetime than white men, according to a Rutgers University study.
New research published today into the rise of so-called 'face morphing' attacks has found that computers are significantly more accurate at detecting fraudulent passport or identity images than humans. Face morphing is a method used by fraudsters which digitally merges two separate identity photographs to create a single image that sufficiently resembles both people to an extent that they are able to obtain genuine documents which could be used to confirm their identity or travel internationally.
A new study published in the Nature Group's journal Scientific Reports shows that conversation with oneself embodied as Dr. Sigmund Freud works better to improve people's mood, compared to just talking about your problems in a virtual conversation with pre-scripted comments. Researchers claimed that the method could be used by clinicians to help people dealing with minor personal problems.