Husbands are still more likely to cheat, but the number of cheating wives is on the rise. A new survey by the National Opinion Research Center shows the percentage of wives having affairs rose almost 40 percent during the last two decades.

Bloomberg News cites sociologists who say more women may feel free to cheat because they have more economic independence and may be seeking out a better mate. Pepper Schwartz of the University of Washington also says increased computer use among younger women may also be responsible for the increase in female infidelity, noting the ease of access to online affairs through websites such as

However, the recent survey shows men are still cheating more than women. While admitted women cheaters represented 14.7 percent of the poll in 2010, men held constant with 21 percent admitting to extramarital affairs.