Hi Rona,
here is a link for 1/3 genetic, rest training and socialization. The american military has invent such things. It is very interesting and the most important times in puppy live are explained. I found this link on a homepage of a small american wolfdog breeder:
http://www.breedingbetterdogs.com/achiever.html
Greetings
Christian
P.S. The rest I will mentioned here when I have more time