Scientific American relays research that finds a reason that may explain why Women Apologize More Frequently Than Men:
Researchers analyzed the number of self-reported offences and apologies made by 66 subjects over a 12-day period. And yes, they confirmed women consistently apologized more times than men did. But they also found that women report more offenses than men. So the issue is not female over-apology. Instead, there may be a gender difference in what is considered offensive in the first place.