I think there are other things that go into it, too. Allie and Dakky were with their mom up to 10-11 weeks, I think. Their mom was found by my girlfriend, and they had an absolutely idyllic 'childhood'. They were both handled from hour 1 of their birth. Allie is VERY standoffish with me and the others, and Dakky? Well, if he ain't lovin' on someone/something, he must be sick. Their personalities are very different, though neither one of them is really afraid of people (newcomers, etc.). AND, they both make more loaves of bread than ANY of my other kitties..so, the theory that kittens separated too early from their mother knead more than other kitties doesn't seem sensical to me.

So, the age old argument...nature v. nuture seems appropriate in the animal kingdom, too!