Melville

Appeal from a custody order in a marital dissolution. We affirm.

BACKGROUND

The parties herein, the former wife and husband, refer to themselves in their briefs as Cheri and Keith, respectively. They also refer to their two sons by their first names, Devin and Patrick. We too will use these designations, intending no lack of respect to anyone.

The parties were married in 1981 and separated in 1994. At the time of separation, the family’s residence was in San Mateo, although for most of the marriage they lived in San Diego. Following the separation, Keith moved to San Diego and subsequently remarried. Cheri, who continued living in San Mateo, had primary physical custody of both children after 1995. Patrick generally stayed with Keith during the summer.

In late 2001, Keith requested that he be given full custody of Patrick, who has Down’s syndrome and a heart condition. Pursuant to court order, a *604 custody evaluation of Patrick was performed by psychologist Matthew Sullivan. In May of 2002, the parties accepted Dr. Sullivan’s recommendations, which were embodied in a detailed order specifying physical custody and visitation. Keith and Cheri would share legal custody…