There is just something in the human brain that wants a "manageable" amount of a product on hand, and we will find any number of ways to make that happen, including eating up the excess. The only item the subjects didn't do this with was bleach, apparently because they had experienced the negative effects of over-bleached clothing.
- If you buy large bags of chips or cookies, pre-portion them into baggies or other containers. Your family will appreciate the convenience of the grab & go bags, and the treats will last longer.
- When you cook, pre-plate the high calorie, high dollar foods (like meats) at the stove. Family members likely won't travel back to the stove for extra helpings unless they are actually hungry.
- Conversely for foods you want your family to eat more of (fruits & vegetables), make larger servings, keep the serving dishes on the table, and put them towards the front of the fridge, or in a bowl near the TV.
- Prepare fewer varieties of food for a meal. We all know that M&M's taste the same no matter what color they are, yet subjects ate significantly more of them when there were 10 colors than when there were 7 of them.
- For items like laundry soap, mark the desired amount clearly on the measuring cup, and consider keeping a smaller container for everyday use while stashing the large container out of sight. Out of sight, out of mind.