Normal aging leads to a decrease in brain volume, with gray and white matter shrinking and cerebrospinal fluid increasing, as measured by synthetic MRI. Highlights: Study Sample: 300 healthy adults (141 males, median age 48; 159 females, median age 50) were analyzed using synthetic MRI. Brain Volume Trends: Brain parenchymal volume (nBPV) decreases steadily with …
A large study of Finnish men found that lower IQ scores were associated with committing more crimes and engaging in a wider variety of criminal offenses. Men with the lowest IQ were the most likely to have criminal records, especially for violent crimes. However, the increase in criminal behavior was gradual as IQ decreased, rather …
Psychopathic individuals are known to commit a disproportionate amount of violence and crime. Yet the connections between psychopathy, intelligence and aggression are complex. A new study unpacks the links between these dangerous traits in men and women. Key Facts: Psychopathy was assessed using the Psychopathy Checklist: Screening Version which divides psychopathy into 4 facets – …
A new study provides evidence that hormonal contraceptive use is associated with increased jealousy and mate retention behaviors in women and their male partners. The research suggests that the synthetic hormones in birth control pills may alter relationship dynamics and have unintended psychological side effects. Key findings: Women using hormonal contraceptives reported higher use of …
Changes in sexual behavior over recent decades have resulted in more people having multiple serial or concurrent sexual relationships during young adulthood. A new longitudinal study investigates how these shifting trends affect mental health. Key Facts: Researchers followed a cohort of nearly 1,000 New Zealanders from birth to age 32, tracking their sexual behavior and …
