Eligible couples 1) had to be at least 25 years old; 2) had to be exclusively involved and living together for at least one year; 3) could not have been previously diagnosed with a psychotic disorder, or currently taking any medication known to treat psychosis or psychotic disorders; 4) could not be receiving current psychotherapeutic (psychological or psychiatric) treatment or anticipating such treatment within the next six months; 5) could not be drinking more than 14 alcoholic drinks
per week, using any type of illegal drugs, or misusing prescription medication; and 6) could not have a history of either
childhood or adulthood physical or
sexual abuse.