The focus on PAS as a tool of questionable value - no medical or psychological group recognizes PAS as a scientifically proven "syndrome" - makes the Maine proclamation a timely development for those who believe in its value in equalizing custody.

PAS was first identified in 1985 by psychiatrist Dr. Richard Gardner, himself a lightning rod among those who debate these issues. For years an expert witness in custody cases, Gardner (who committed a brutal suicide in 2003) has been variously hailed as hero or villain, depending on which way the court leaned.

To fathers, he was a godsend - an advocate for protecting children from the emotional fallout of divorce and the potentially lasting damage from over-identifying with one parent while hating the other. Given that children are part of both parents, hating one parent is tantamount to hating half of oneself. Can't be good for you.

To mothers, some of whom surely were trying to protect their children, Gardner is something else. Through the years, many tried to discredit him for his self-published library and the lack of peer review for his articles. Some called his work "junk science."

But Gardner's theory has gained traction in recent years. Today, there are some 133 peer-reviewed articles about PAS and more than 65 legal citations.

While I'm in no position to argue for or against the scientific integrity of PAS, anybody old enough to drink coffee knows that embittered divorcees can and do manipulate their children. Not just women, but men, too. But because mothers more often are awarded custody of children, they more often draft their children to share their bitterness.

The biggest losers in such cases, of course, are neither the mothers nor the fathers, but the children, who deserve to have unfettered access to both parents, assuming there's no abuse, without having to tote the adults' emotional baggage.

Whether parental alienation meets the scientific standards of a "syndrome" is a battle researchers can wage among themselves. The underlying message, meanwhile, is that there needs to be a presumption of shared custody following divorce, again, assuming no abuse.

Life is alienating enough without the help of one's own parents.