My daughters are Amanda, 19, and Cayla, 16. They are both in high school. They are reasonably intelligent creatures, with a good sense of humor. However, they are not the most helpful children around. Cayla used to be. But around the time she officially became a teenager, her attitude changed. She didn't become surly, exactly, but started giving out these "put-upon" vibes. Now, this may be legitimate, as I had relied on her helpfulness quite a bit, especially since her sister is the type to simply ignore commands, suggestions and orders. Now, they've both got it. Before I left for work yesterday, I asked for a few simple tasks to be done: Empty the dishwasher. Fill the dishwasher (and start it, although I didn't actually say that). Do one load of laundry for me. Take out the garbage (from four wastebaskets). How much of that do you think got done? Well, when I got home from work, I emptied the dishwasher, filled it and started it. I put a coupl...