Washington: Attractive and smart but unlucky in love? New research suggests you might not have luck to blame but rather your own negative traits.

Columbus: There are six components to an apology – and the more of them you include when you say you’re sorry, the more effective your apology will be, according to new research.

Washington: Around half of all heterosexual men and women potentially carry so-called homosexuality genes that are passed on from one generation to the next. This has helped homosexuality to be present among humans throughout history and in all cultures, even though homosexual men normally do not have many descendants who can directly inherit their genes. 

Columbus: Young male gamers who strongly identify with male characters in sexist, violent video games show less empathy than others toward female violence victims, a new study found.

Washington: In a general sense, medical studies support the popular intuition -- a staple of movies and literature -- that suicidal behavior and substance misuse are linked. But the relationship between the two is not so simple. 

New York: Could there be a vegetarian gene? Cornell University researchers have found evidence of a genetic variation – called an allele – that has evolved in populations that have historically favored vegetarian diets, such as in India, Africa and parts of East Asia. 

Columbus: When it comes to emotional health, young couples – especially women -- do just as well moving in together as they do getting married, according to a new national study.

Washington: For each additional month of paid maternity leave offered in low- and middle-income countries (LMICs), infant mortality is reduced by 13%, according to a new study by researchers from McGill University and UCLA Fielding School of Public Health.

Washington: Women who perceive that their sexual partner is imposing perfectionist standards on them may suffer sexual dysfunction as a result, psychologists at the University of Kent have found.

Los Angeles: Why do opponents of same-sex marriage really oppose it?