A sample of 4,013 participants from 24 countries were asked about aggression toward siblings and non-sibs, to determine ...

Decades of research with humans and other species indicate that males are more aggressive than females. But within the family, are sisters as aggressive as brothers?

Not everyone is a saint as they get older. Kids who were never told no growing up usually do these entitled things as adults.

Narcissistic behavior thrives in environments where visibility matters more than contribution. If you’re constantly talking ...

Joseph Vandello, a psychology professor at the University of South Florida, says that when influential figures ramp up a ...

We have seen in actual medical decisions that physicians are prescribing less analgesics for the same reported pain score and ...

People with strong social intelligence are deeply aware of how their behavior affects others, which is why certain habits ...

New research provides evidence that women with high levels of psychopathy are more likely to engage in physical, verbal, and ...

Struggling with your New Year’s fitness resolutions? Don't give in to Blue Monday. Here's how you can successfully form and ...

Imaginary friends are part of normal childhood development, but clinicians should assess rigidity, distress, or functional impairment to separate healthy play from underlying concern issues.

In this recent interview, edited for length and clarity, Housel shares his views on saving and investing, the rules people ...

Research has shown that people who display overconfidence are rated as more competent by others and achieve higher social ...