Intelligence

Intelligence News -- ScienceDaily Intelligence - nature or nurture? Researchers find a gene for intelligence and also that a bigger brain matters, yet other recent articles show how motivation affects learning.

  • Simple test may help predict long-term outcome after stroke
    on October 17, 2018 at 9:28 pm

    A simple test taken within a week of a stroke may help predict how well people will have recovered up to three years later. […]

  • How does brain structure influence performance on language tasks?
    on October 17, 2018 at 6:21 pm

    The architecture of each person's brain is unique, and differences may influence how quickly people can complete various cognitive tasks. But how neuroanatomy impacts performance is largely an open question. To learn more, scientists are developing a new tool -- computational models of the brain -- to simulate how the structure of the brain may impact brain activity and, ultimately, human behavior. […]

  • Father's nicotine use can cause cognitive problems in children and grandchildren
    on October 16, 2018 at 6:24 pm

    A father's exposure to nicotine may cause cognitive deficits in his children and even grandchildren, according to a new study. The effect, which was not caused by direct secondhand exposure, may be due to epigenetic changes in key genes in the father's sperm. […]

  • Modifiable dementia risk factor in older adults identified
    on October 16, 2018 at 5:20 pm

    Stiffness of the aorta -- more so than blood pressure or subclinical brain disease -- is a key risk factor for dementia. Since aortic stiffness can be reduced by medication and healthy lifestyle changes, these results suggest that people can still lower their dementia risk well into old age. […]

  • Us vs. them: Understanding the neurobiology of stereotypes
    on October 15, 2018 at 8:31 pm

    Scientists describe how non-invasive brain stimulation -- a technique he and others have pioneered to unlock the secrets of the brain -- could shed light on the neurobiology underlying implicit bias. […]

  • Cesarean-born mice show altered patterns of brain development, study finds
    on October 15, 2018 at 7:29 pm

    Cesarean-born mice show altered patterns of cell death across the brain, exhibiting greater nerve cell death than vaginally delivered mice in at least one brain area, a finding that suggests birth mode may have acute effects on human neurodevelopment that may lead to long-lasting changes in the brain and behavior. […]

  • Scientists chase mystery of how dogs process words
    on October 15, 2018 at 4:09 pm

    Experimental results suggest that dogs have at least a rudimentary neural representation of meaning for words they have been taught, differentiating words they have heard before from those they have not. […]

  • A new study indicates the possibility to monitor the progression of Alzheimer's disease by...
    on October 12, 2018 at 10:08 pm

    In a breakthrough human study, anti-oxidant, glutathione (GSH), which protects the brain from stress, has been found to be significantly depleted in Alzheimer's patients compared to normal subjects. As GSH is a very important anti-oxidant that protects the brain from free radicals, the findings give us another measure to use when diagnosing potential for the advancement of Alzheimer's disease or recognizing those that are in the throes of Alzheimer's advancement. […]

  • Insights on the effects of exercise on cognitive performance
    on October 12, 2018 at 3:02 pm

    A new study has looked at the details behind how cognitive performance may improve during aerobic exercise. […]

  • How the grid cell system of the brain maps mental spaces
    on October 12, 2018 at 2:22 pm

    How exactly the grid cell system works in the human brain, and in particular with which temporal dynamics, has until now been speculation. A much-discussed possibility is that the signals from these cells create maps of 'cognitive spaces' in which humans mentally organize and store the complexities of their internal and external environments. A team of scientists has now been able to demonstrate, with electrophysiological evidence, the existence of grid-like activity in the human brain. […]

  • Nerve stimulation in mice suggests new way to reduce delirium after surgery
    on October 11, 2018 at 6:31 pm

    For adults over age 65, surgical complications can dampen not only their physical health but also their mental sharpness, with more than half of high-risk cases declining into delirium. New research shows a current treatment for seizures can also reverse brain inflammation, such as inflammation after surgery, and the subsequent confusion or cognitive decline that results. […]

  • Altruism can be trained
    on October 10, 2018 at 2:56 pm

    Mental training can effectively cultivate care, compassion and even altruistically motivated behavior psychologists have shown in a recent study. […]

  • New appropriate use criteria for lumbar puncture in Alzheimer's diagnosis
    on October 10, 2018 at 2:55 pm

    In preparation for more tools that detect and measure the biology associated with Alzheimer's and other dementias earlier and with more accuracy, experts have published appropriate use criteria (AUC) for lumbar puncture (spinal tap) and spinal fluid analysis in the diagnosis of Alzheimer's disease. […]

  • Brain circuits for successful emotional development established during infancy
    on October 10, 2018 at 1:36 pm

    Researchers tracking the development of the brain's emotion circuitry in infancy found that adult-like functional brain connections for emotional regulation emerge during the first year of life. And the growth of these brain circuits during the second year of life predicted the IQ and emotional control of the children at 4 years old, suggesting new avenues for early detection and intervention for children who are at risk for emotional problems. […]

  • Protein has unique effects in neural connections related to information processing
    on October 9, 2018 at 5:59 pm

    The protein SAP102, which is implicated in intellectual disability, appears to play a key and potentially unique role in regulating the form of postsynaptic AMPAR receptor currents in the brain, a new study finds. […]

  • World's largest sleep study shows too much shut-eye can be bad for your brain
    on October 9, 2018 at 5:58 pm

    Preliminary results from the world's largest sleep study have shown that people who sleep on average between 7 to 8 hours per night performed better cognitively than those who slept less, or more, than this amount. […]

  • Artificial intelligence helps reveal how people process abstract thought
    on October 9, 2018 at 3:50 pm

    As artificial intelligence becomes more sophisticated, much of the public attention has focused on how successfully these technologies can compete against humans at chess and other strategy games. A philosopher has taken a different approach, deconstructing the complex neural networks used in machine learning to shed light on how humans process abstract learning. […]

  • Memory 'brainwaves' look the same in sleep and wakefulness
    on October 9, 2018 at 3:50 pm

    Identical brain mechanisms are responsible for triggering memory in both sleep and wakefulness, new research has shown. […]

  • Club drug GHB associated with brain and cognitive changes
    on October 8, 2018 at 2:46 pm

    Scientists have discovered that regular use of the party drug GHB, and especially unconsciousness following GHB use, is associated with brain changes including negative effects on long-term memory, working memory, IQ, and higher levels of stress and anxiety. […]

  • AI could predict cognitive decline leading to Alzheimer's disease in the next five years
    on October 4, 2018 at 7:54 pm

    A team of scientists has successfully trained a new artificial intelligence (AI) algorithm to make accurate predictions regarding cognitive decline leading to Alzheimer's disease. […]

  • Every cell has a story to tell in brain injury
    on October 4, 2018 at 5:57 pm

    Traumatic head injury can have widespread effects in the brain, but now scientists can look in real time at how head injury affects thousands of individual cells and genes simultaneously in mice. This approach could lead to precise treatments for traumatic brain injury (TBI). […]

  • Researchers develop combined data model to better evaluate for mild cognitive impairment
    on October 4, 2018 at 3:00 pm

    A new study has shown that by combining imaging and neuropsychological testing, one can more accurately assess the cognitive status of individuals. […]

  • Day-time naps help us acquire information not consciously perceived, study finds
    on October 4, 2018 at 1:59 pm

    The age-old adage 'I'll sleep on it' has proven to be scientifically sound advice, according to a new study which measured changes in people's brain activity and responses before and after a nap. The findings support the advice which suggests that a period of sleep may help weighing up pros and cons or gain insight before making a challenging decision. […]

  • Pyramid-shaped brain cells provide algorithm for us to recognize, categorize food
    on October 4, 2018 at 12:53 pm

    Brain regions best known for recognizing the potential horror of a hurricane also help us recognize, appreciate and categorize our food, scientists report. […]

  • Mouse study mirrors human findings that link chemotherapy and APOE4 to cognitive issues
    on October 4, 2018 at 12:53 pm

    A chemotherapy drug commonly used to treat breast cancer alters brain structure and function in mice that express the human APOE4 gene, known to significantly increase risk of developing Alzheimer's disease, according to a new study. […]

  • A new brain-inspired architecture could improve how computers handle data and advance AI
    on October 3, 2018 at 8:27 pm

    Researchers are developing a new computer architecture, better equipped to handle increased data loads from artificial intelligence. Their designs draw on concepts from the human brain and significantly outperform conventional computers in comparative studies. […]

  • First large study details cognitive outcomes among older breast cancer patients
    on October 3, 2018 at 8:27 pm

    The first large US study of cognition in older breast cancer patients found that within the first two years after diagnosis and treatment, most women do not experience cancer-related cognitive problems. […]

  • For better multiple-choice tests, avoid tricky questions, study finds
    on October 3, 2018 at 1:03 pm

    Although people often think about multiple-choice tests as tools for assessment, they can also be used to facilitate learning. A new study offers straightforward tips for constructing multiple-choice questions that are effective at both assessing current knowledge and strengthening ongoing learning. […]

  • Teen cannabis use is not without risk to cognitive development
    on October 3, 2018 at 1:03 pm

    A new study confirms that cannabis use is related to impaired and lasting effects on adolescent cognitive development. […]

  • Free thinking: Origins of free will in the brain
    on October 2, 2018 at 4:39 pm

    Neuroscientists used brain lesion network mapping to find the anatomical origins of the perception of free will. […]