I am not interested in Ezzo- or GFI-bashing here in this review.
As a mom of three infant boys, each a little over a year apart with one more on the way, I see nothing wrong with the gist of the Babywise book. The principles for eating and sleeping work rather well if you employ them with some grace and flexibility as tiny ones require. Contrary to what you may have heard, the Ezzo's do not suggest tossing your tenderness, intuition, or creative parenting out the window--they provide some basic eating/sleeping instructions very similar to those sent home with Mom a generation ago from Dr. Spock, the pediatrician, or the hospital nurse (but not highly common nowadays due to the AAP's shift in philosophy). Such advice will not harm your baby unless you employ their methods religiously as if it is the "magic formula" to enjoying newborns. There exists no such formula--not in Ezzo, and not in the Sears or child-centered camp either.
Briefly, the basic principles covered include:
1. Feeding approx every three hours
2. Trying to keep your baby awake during feedings and a little afterwards.
3. Putting your baby down to sleep before the next feeding
4. Keeping your baby on a eat-wake-sleep routine to help their hunger stabilize for faster nighttime sleeping.
5. Trying not to allow babies to become overdependent for sleep on any one prop (rocking, swings, slings, pacifiers, car rides, etc).
6. Generally helping the baby's needs to fit into you and your family's routine, rather than arranging you and your family's needs completely around the baby's routine (or having none at all).
I maintain that these principles, while presented a little briskly, are not damaging to infants. They are in fact very helpful if after a month or two your baby does not naturally seem to eat or sleep with any pattern, or if he/she has the days and nights mixed up. But people take the Ezzo's too far when they pretend that their methods are gospel to tending, pacifying, or loving newborns--or MAKING them do anything. All they can do is provide guidelines for structure. And yet there is a tendency for new parents with a distinctively wailing newborn to be anxious for solutions to stop the crying, and for signs that they are feeding the child enough, doing all the right things. If you follow Ezzo (or Sears) believing that they will keep you safe, your real relationship with your baby may suffer because that is the wrong mentality to approach parenting. It is this formula-seeking, intimidated approach to parenting that is the real danger to a child's health and psychology, not the actual guidelines in the book. I thoroughly believe that any wild incidents you hear about concerning Ezzo-following came from this mentality, at the root.
That said, it is also true that not all methods are created equal. With one preschooler, one two-year old, one baby, and one forthcoming child in the house now, my husband and I have found that a philosophy which leans a little more towards where the Ezzo's are coming from produces better results than the philosophy that the Sears' or even the AAP endorses, especially by late toddlerhood. The tendency for child-centered parenting to go awry by the two-year old stage--for the parent OR the two-year old!--is noticeable. And the time demands on a parent (or two) practicing this way is almost impossible if you work or your children's ages are close together.
I agree that Babywise could use a little more seasoning of flexibility and lovingkindness in its presentation. It seems to assume that you have already heard all the right ways to parent and is therefore coming from a corrective position rather than an objectively inexperienced one. However, the basic principles are presented clearly and that is the purpose of the book. I found that the principles worked especially well with my first son who cried a lot, had reflux, and could have been considered "a difficult baby." The advice was not so necessary for my next two sons who were easier babies in the eating/sleeping area (and had a more experienced mom!). For more warmth and depth, I'd recommend Tracy Hogg's "Secrets of the Baby Whisperer" which combines the best of the Babywise advice along with some humor and nuanced examples of how to apply this stuff.
Or, on the philosophy end, you can try "The Mission of Motherhood" by Sally Clarkson for a vision of motherhood as a whole and then try to apply the Babywise advice in that context. After all, parenting (even infants) is not just about helping them to eat and sleep right... although it certainly feels like that for the first couple months.