In the book For Yourself, Dr. Lonnie Barbach reports: "Research by Arvalea Nelson indicates that consistently orgasmic women tend to describe themselves as contented, good-natured, insightful, self-confident, independent, realistic, strong, capable, and understanding while non-orgasmic women tend to describe themselves as bitter, despondent, dissatisfied, distrustful, fussy, immature, inhibited, prejudiced, and sulky."