To put it simply, my own research does not rival "Investigative Report" but, still, none-the-less it's research as to WHY people lie... here's what I discovered. Truth is (no pun intended) there are at least three types of lies. My blog today, "The Angel's Loft" may provide you with some insight. I really tried hard not to be gender-specific, because I do not feel that this is a male or female issue, rather it's a human issue.
Make it a great day!