Amphetamine is well known for its ability to increase dopamine levels in the brain. But new research suggests the psychostimulant drug may also directly alter dopamine 2 receptors, with implications for behavioral effects and physiological changes seen after chronic amphetamine use. Key facts: In cells expressing the dopamine transporter, prolonged amphetamine exposure decreased dopamine 2 …
A new study published in the Journal of Personality suggests that individuals exhibiting secondary psychopathic traits are perceived as less intelligent than those with primary psychopathic traits. The research examined how laypeople view the intelligence of others based on psychopathic traits. Here are some key findings: Individuals described as exhibiting high secondary psychopathy traits (impulsivity, …
Wastewater from pharmaceutical plants and research facilities may contain concerning levels of toxic chemicals and drugs. As this water is often reused for irrigation or finds its way into drinking water, it poses significant public health risks that urgently need addressing. Key Facts: Wastewater can contain residues from thousands of different pharmaceuticals, including antibiotics, antidepressants, …
Kava is an ancient ceremonial drink from the Pacific Islands that’s gaining popularity worldwide for its ability to reduce anxiety, improve sleep, and protect brain health. Key facts about kava: Kava comes from the root of the Piper methysticum plant and has been consumed ceremonially and socially in Pacific Island cultures for thousands of years. …
New research demonstrates that repeated focused ultrasound treatments can have antidepressant-like effects in rats. The non-invasive technique was able to improve performance on a common test of depressive behaviors. While not a silver bullet solution, focused ultrasound represents an exciting potential alternative for depression treatment. Key Facts: Focused ultrasound (FUS) uses targeted sound waves to …
A large new study finds that exposure to common industrial solvents on the job is associated with reduced cognitive performance, especially in men. Key findings show: Men exposed to solvents like gasoline, trichlorethylene, white spirit or cellulosic thinners performed worse on tests of memory, processing speed and executive function. The more types of solvents men …
General intelligence, known as g or IQ, has long been the focus of cognitive genetics research. But what about more specific cognitive abilities, the building blocks that make up IQ? A sweeping new meta-analysis of over 740,000 twins surprisingly suggests: Specific cognitive abilities (SCA) like reading, math and processing speed are just as heritable as …
A new study examining the family trees of over 400,000 people in England over the past 400 years suggests that rates of social mobility have remained remarkably static despite massive societal changes. The research implies that an individual’s social status is strongly influenced by genetic factors that are passed down through families for generations. Key …
Psychopathy, a severe personality disorder characterized by emotional coldness, impulsivity, and antisocial tendencies, has long fascinated researchers and the general public alike. A new Italian study sheds light on the relationship between psychopathy and intelligence in female criminal offenders, finding that higher psychopathic traits are associated with lower IQ. Key Facts: Researchers administered psychological assessments …
Kratom is a plant gaining popularity as an alternative painkiller and recreational drug. But how much do we really know about its risks and benefits? About Kratom: Kratom is a tropical tree in the coffee family, native to Southeast Asia. People ingest its leaves to produce stimulant and opioid-like effects. Use is rising in the …
