I see it with my big boy Boomer. I had to take him home and bottle feed him at 4 weeks of age, because his mommy didn't have enough milk.

Even though he grew up with Beans, Jade and Bownie around he DOES lack some of the cat world social skills (like how to approach the others when he wants to play and he doesn't always read them very well when enough is enough). He's a sweet boy, though.