There have been several articles in the past about the Sims and its relationship with psychology. There's another one that's been found recently. "Suburban Rhapsody" talks about how people use the Sims to simulate their own lives, or to express themselves. The Sims is very much like real life, and certain elements of the simulation are made after real life. The article also tells some bits of Will Wright, and where he got his ideas for the Sims from. Wright has used several books about psychology to make the simulation. "His games may be mass-market hits, but they're based on some very brainy theories about behavior, economics, and human psychology." If you're interested in reading all of it, then visit this page at the San Antonio Current. Thanks to WorldSims for the tip.