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I don't see anything new with Trimberger's book. She just happened to profile women who don't want to commit. They have jobs and careers and friends, and their sexual needs and desires for physical intimacy are being met by having affaris with married men.
This woman clearly went into her research with bias, probably as a subconscious way to justify her own choices and position in life. Given her small sample size and selective prejudice, this is not a rigorous study. Anyone who talks with anyone (and even the majority of the women in the study admit) will quickly learn that most people don't want to be single and in fact want to cohabit in a romantic relationship.