There once was a time when people did the right thing, well, because it was the right thing to do. The widespread use of rewarding children for doing what was once simply expected can potentially undermine adult-child relationships and children's general sense of personal responsibility in the world.

Reinforce Positive Behaviors without Rewards
I was in a grocery store with my 5-year-old niece when a fellow shopper's change purse spilled loose coins all over the floor. My niece quickly helped pick up the coins and returned them to the woman. When the woman kindly offered my niece some of the coins she had recovered, my niece looked confused. She clearly wasn't expecting a reward for doing the right thing - I wanted to reinforce this internal sense of doing what's right so I explained to the woman that my niece simply wanted to help her and did not expect anything for doing so. The woman seemed slightly surprised as we wished her a good day and went on our way.

Some might say that accepting the "reward" would have been harmless. I beg to differ. Every time we provide an external reward for something that a child would, and should do without payment, we increase the expectation of a reward for the same behavior in the future.

Over time, too many external rewards result in a "what's in it for me?" type of approach towards doing the right thing.

Stop rewarding for grades, helping sis with homework, being nice…
There are some basic responsibilities children should have as they participate in family, school and community life. Being a respectful, contributing member in any setting means taking personal responsibility for both tasks to be completed and positive, helping behaviors towards others.

Trust that feeling the natural consequences of her good choices – positive interactions with others, pride in one's work, good feelings about herself – will be enough to motivate your daughter to continue to do the right thing.

By giving her "more", you could motivate her to do less.