Parents who use marijuana and alcohol are more likely to use both non-violent and violent discipline on their children than those who do not use substances. The annual frequency of physical abuse was 0.5 times higher in those parents who had used alcohol and marijuana in the past year.
Mothers who report estrangement from their adult children report they often believe their ex-husbands, and the current partner of the child is responsible for the break in their relationships. Additionally, some cite mental health problems experienced by their child as a factor for estrangement.
Caffeine has surprising effects when it comes to team work, researchers say. A new study reveals people who drank coffee gave more positive reviews about group task performance and were more on topic than those who drank decaf.
Brain regions associated with emotional processing are not functionally connected in a mature way to areas associated with auditory and visual processing in newborns.
Researchers report immune cells in the spleen can contribute to chronic anxiety following psychological stress.
According to researchers, mast cells play an important role in determining whether an animal's sexual behavior will be more typical of a male or a female as they mature. Chemically stimulating mast cells in newborn female mice resulted in them acting more like males as adults.
Hair samples from teens could help detect their risk of mental health problems. Researchers found teens with higher cortisol levels in hair samples were more likely to experience depression. Low cortisol levels were also linked to an increased risk of mental health issues.
A comparative review of 324 global research papers concludes narcissism is a risk factor for aggression and violent behaviors. The results were similar, regardless of age, gender, education level, or country of residence.