I wonder how it equips children for the real world where there is both positive and negative reinforcement. If they only deal with positive reinforcement, will they have the emotional conditioning to deal with negative reinforcement. For example, dealing with a negative review or getting skipped for a promotion. Something we probably all experienced, getting yelled at by a manager.

Anecdotally, being raised by an asian mom. I was subjected to negative reinforcement of her disappointment if i didn't do well. I attribute that to both my and my sister success because we both didn't want to deal with the shame of failure.