My definition of SCALPING (ES) is anything less than 2 handles. (i would even go as far to say that many even go lower than this amount).
Personally i feel many traders look to scalping because of losing many trades when attempting to catch intraday runs in the past. (a intraday position trade). Makes sense because there is not a single reason on the planet for a daytrader to attempt to take TICKS out of the mkt rather than HANDLES.
Look at the reward to risk: What is a scalper trying to accomplish? What is a scalper trying to avoid? The simple answer is that a so called scalper is envisioning profits and scared stiff to do trades where the risk is anything below THE SAME PROJECTED PROFIT. This is a flawed strat for anyone but the market maker who can BUY the BID and SELL the ASK.
Small tiny tick profits is a SURE CLUE that this trader is afraid of the game he/she is playing. Scalpers as they like to be called, TAKE the small profit before it goes "PUFF".
Face it guys, scalping is for chicken littles. NO ONE , NO ONE comes into trading with the intention of becoming a scalper unless he/she is heading inside the pit.
Scalping as a strat is an excuse for avoiding the truth that said trader has a hangup on taking losers.
Scalping for small wins is a ticket to failure. WHY? Because if one is afraid to take a loss on an intraday position trade and gets desperate and turns to SCALPING as a relief valve, where is it written that this same person is automatically going to TAKE a loss before it wipes out all those small kiddie profits?
Scalping is nothing more than an off the floor trader trading NOISE........WHY? Because a scalper is doing trades where the risk/reward is no better than flipping a coin. Scalpers are at disadvantage to coin flippers also because coin flippers do not need to pay commissions. Flips that scalp are (and i will bet the farm on this) NOT TOUGH ENOUGH to TAKE small losses. Flip scalpers will stick with a loss and watch 10 small scalps go down the toilet. Scalpers are AFRAID to trade with a proper r/r ratio. Why? Why else would anyone on the planet say to another person......"I SCALP for pennies in one of worlds largest cash pots." They really need to say>.. I am lost, i am on road to ruin.
All leads back to original contention: scalpers can not trade good enough to trade intraday positions. ...

Ok, time to bring home some bacon soon. Good luck you position intraday folks
PS, Scalpers do nothing more than provide liquidity for us intraday position traders. thanks guys