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One measure of infidelity among couples is the frequency of children secretly conceived with a different partner, leading to "non-paternities".
To help reach a wide audience, study links posted here are also publicized via Twitter and an RSS feed (a combined subscriber base of over 211,000 people).
All told, SPN has posted links to 2,278 studies and generated a total of 1,141,515 visits to these studies (an average of 319 visits per study for links posted in the past month).
When they are not met, research has found that psychological damage can occur, including feelings of rage and betrayal, lowering of sexual and personal confidence, and damage to self-image.
Depending on the context, men and women can experience social consequences if their act of infidelity becomes public.