Non-monogamy (or nonmonogamy) is an umbrella term for every practice or philosophy of intimate relationship that does not strictly hew to the standards of monogamy, particularly that of having only one person with whom to exchange sex, love, and affection.
Therefore, in that sense "nonmonogamy" may be as accurately applied to infidelity and extramarital sex as to group marriage or polyamory.
After the participants made their ratings, they learned that each of the potential mates possessed a specific potential deal breaker (e.g., an unhealthy lifestyle, undesirable personality traits, interest only in a casual sexual relationship when you’re interested in a serious relationship, or vice-versa).
Participants then re-evaluated their interest type of relationship with the person, including friendship.
Most of the students didn’t name that many—an average of just under 5 deal breakers for long-term relationships, and 3 for short-term relationships.
That first study generated a list of 49 possible deal breakers.
Like the previous study, this experiment also found that deal breakers had a bigger effect on relationship intentions than did dealmakers; this tendency was greater for women than for men.
The researchers interpreted their findings as being consistent with evolutionary theory which posits that women are more discriminating in their mating choices than men.
In general, women were more likely than men to identify these traits as deal breakers.
These participants were given a list of 17 traits and were asked to check off the ones they felt were deal breakers (as many as they wanted).
The table below shows the percentage of participants who chose each of the 17 traits, broken down by gender.
In their last two experiments, the researchers examined the relative effect of deal breakers and dealmakers. In one study, 193 adults were asked to imagine they had just met someone new, and to rate how learning new pieces of information about that person would affect their likelihood of accepting or rejecting the individual as a short- or long-term relationship partner.
Five pieces of information were potential deal breakers—poor hygiene; short tempered; has an STD; promiscuous; and drinks excessively—and five were dealmakers—physically attractive; kind; good career; good sense of humor; intelligent.