by University College London Credit: Pixabay/CC0 Public Domain The short-term effects of vaporized cannabis do not differ between adolescents and adults, while cannabidiol (CBD) does not dampen the effects of the drug, finds a new study led by UCL and King’s College London researchers. For the experimental study published in Addiction, the researchers measured how regular cannabis...
Category: <span>Psychology & Psychiatry</span>
Study: Psychology researchers often disregard scientific evidence due to lack of statistical knowledge
by Tilburg University Belief in the theory based on Bayesian inference, as a function of statistical power (0.50 and 0.80) and the number of statistically significant results, k, given prior probabilities equal to 0.5. The beliefs in the theory for k = 0,1,2,3,4 are [0.071, 0.593, 0.965, 0.998, 0.999] and [0.002, 0.013, 0.919, 0.999, 1.000] for a...
Mitochondrial deterioration linked to major depression in older adults
by Kim Krieger, University of Connecticut Credit: Pixabay/CC0 Public Domain Depression can drain a person’s energy. In the elderly, there may be a very good reason for that: depression has been linked with the deterioration of the tiny power plants in our cells. These power plants are the mitochondria, tiny structures within our cells that handle several...
Using deep learning to detect depression from speech
by Ingrid Fadelli, Medical Xpress Flowchart of the model’s front-end processing of voice signals. Credit: Tian, Zhu and Jing Artificial intelligence (AI) tools have achieved promising results on numerous tasks and could soon assist professionals in various settings. In recent years, computer scientists have been exploring the potential of these tools for detecting signs of...
A neural substrate that may modulate sex differences in motivation
by Ingrid Fadelli, Medical Xpress A histology image of the neurons targeted by the researchers. These are neurons in the anterior cingulate cortex that project to the dorsomedial striatum. Image credit: Sharon Ornelas Psychology research conducted over the past few years suggests that males and females can preferentially engage in different decision-making strategies. The precise neural underpinnings of...
Research team finds brain marker that indicates vulnerability to developing post-traumatic stress disorder
by Taylor McNeil, Tufts University Credit: Pixabay/CC0 Public Domain Understanding one’s susceptibility to developing post-traumatic stress disorder (PTSD) is important. If you knew you were at risk, for example, you might steer clear of jobs that carry more likelihood of high stress and potential trauma or seek treatment as soon as you experienced a potentially...
Tuning into brainwave rhythms speeds up learning in adults, study finds
by University of Cambridge The brainwaves experiment set-up in the Adaptive Brain Lab, led by Prof Zoe Kourtzi, in the University of Cambridge’s Department of Psychology. Credit: University of Cambridge Scientists have shown for the first time that briefly tuning into a person’s individual brainwave cycle before they perform a learning task dramatically boosts the...
Parkinson’s Disease: Focus on Hallucinations
Marine Cygler January 23, 2023 PARIS ― Hallucinations affect more than half of patients with Parkinson’s disease. They are often hidden by those experiencing them, yet they are something neurologists must be made aware of in their patients, since they are associated with poor long-term outcomes and a reduced quality of life. Hallucinations also are a source of...
Dementia: Could poor mental health in middle age increase risk?
Psychological health may have a bigger impact on dementia risk than previously thought. SolStock/Getty Images Researchers followed 67,688 individuals over an average period of 25 years to better understand the link between symptoms of dementia and psychological distress (stress, depressive mood, exhaustion, and nervousness). The researchers found that psychological distress symptoms are associated with an...
27 of 39 Updated guideline recommends CBT or second-generation antidepressants for adults with major depressive disorder
by American College of Physicians Credit: Unsplash/CC0 Public Domain The American College of Physicians (ACP) has issued an update of its guideline with clinical recommendations for nonpharmacologic and pharmacologic treatments of adults in the acute phase of major depressive disorder (MDD). In the updated clinical guideline, ACP recommends the use of either cognitive behavioral therapy (CBT) or second-generation antidepressants...