I don't want to be non-supportive either. However, I can tell you from being a former liar myself.......that it was in response to my alcoholic mother who became super critical when she was drunk and when she was not drunk, she was a perfectionist. (Maybe that's one reason she drank? I dunno.) Anyway, it was easier to lie about inconsequential things and "clean up the damage" later than to start a row by telling the truth and never hear the end of it plus the insults that would inevitably come with it. We were taught to tell the truth and for the most part, on really big things, we did. But when it came to things like "did you take the dog out", for example, we'd say yes and then wait until she passed out and then take the dog out. See what I mean? We were kids and constantly being bombarded with criticism. It became a means of survival and a little peace. Then later, it became a habit. I had to consciously teach myself to not do it anymore because after leaving my parents' home, I had no reason to do it anymore. There was no threat anymore.