Russell (1995) studied 321 couples and found that several aspects of marital satisfaction were related to higher levels of particular 16PF traits. She also found that several 16PF traits predicted greater consensus between the partners on important topics, and that better problem-solving communication was related to another set of traits. She also found that 16PF trains predicted more traditional gender roles in relationships. Crying and Olson (1995) also studies 145 marital therapy clients, and found that five different 16PF trait clusters represented different marital type that required different types of therapeutic goals.