I have yet to delve fully into this issue but it seems there is a great need for objective definitions in [the field of parenting].
For example, what constitutes a reward? Does a smile and a high five, in response to a kid's achievement, constitute one? Or, using one of Kelly's examples, are good grades a reward?
What distinguishes a reward from an objective evaluation of the facts (or an act of justice) in the above cases? Does being a good parent demand that one pretend facts (or one's estimates of them) are other than they are? Put another way: is emotional neutrality with regards to children's choices and the consequences a virtue?
Are kids quick to exchange their parent's (or teacher's) values for their own? In certain areas--like food and games and schedules--it seems that this is not the case. But this seems to be the premise behind the strong need for caution.
What is "extrinsic motivation" and is it necessarily the same as "second-handed motivation"? How does the "extrinsic motivation" of giving a kid an allowance for their efforts at school differ from an adult getting a salary for their efforts at work?
As noted in the title, the answers are not included here. But feel free to post your own in the comment section!