in the same vein, we should not criticize so generally, but more on a 'per event' basis, so that the child knows what he did to transgress. much the opposite of many parents' styles today.
so...praise generally, criticize specifically. instead of each act getting a nod, the nod goes to the whole day or week as 'man, you kids have been really great today, i really appreciate it, let's go to the park and have a picnic'. and 'tristan, we don't bite/hit/pull hair/scream/throw food/pee on the floor/etc.'
that's the mantra - praise generally, criticize specifically.