A great many foreigners assert that European women can't compete in beauty with girls from Ukraine.Apart from their attractive appearance, those Slavic girls win the hearts of foreigners by their rich inner world and individual characteristics that are often overlooked and underappreciated by Ukrainian men.Ukrainian women have been online for not quite long.

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It was commissioned by the dating website e Harmony, according to the study's conflict of interest statement.

Company officials say e Harmony paid Harris Interactive $130,000 to field the research.

"It's a very impressive study," says social psychologist Eli Finkel of Northwestern University in Evanston, Ill.

"But it was paid for by somebody with a horse in the race and conducted by an organization that might have an incentive to tell this story.

Cacioppo has been a member of e Harmony's Scientific Advisory Board since it was created in 2007.

In addition, former e Harmony researcher Gian Gonzaga is one of the five co-authors.

About 45% of couples met on dating sites; the rest met on online social networks, chat rooms, instant messaging or other online forums.

Lead author John Cacioppo, a psychologist and director of the Center for Cognitive and Social Neuroscience at the University of Chicago, says dating sites may "attract people who are serious about getting married." While Cacioppo is a noted researcher and the study is in a prestigious scientific journal, it is not without controversy.

Talking about the dating scene, Ukrainian dating has gone online less than 20 years ago.