In this episode of Modern Wisdom, Macken Murphy and Chris Williamson explore research findings about modern dating and relationships. The discussion covers physical preferences between genders, including specific traits that men and women find attractive, and examines how attractiveness levels can affect relationship dynamics. They also address how past dating experience influences potential partnerships differently for men and women.
The conversation extends to broader societal shifts in dating and mating patterns, including changes in how educated, high-earning women approach partner selection. Murphy and Williamson examine various cultural examples of relationship dynamics, discuss the evolutionary basis for certain mating behaviors, and explore how socioeconomic conditions and physical characteristics influence modern dating prospects.

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A discussion on how mate preferences and attractiveness standards vary between genders reveals several key insights about physical preferences and their implications.
According to research by Proust and colleagues, women prefer men with penis sizes larger than average (6.3 inches in length and 4.8-5 inches in circumference), though they tend to be flexible about this preference in practice. Chris Williamson and Macken Murphy note that women generally favor men with a protective physique—strong hands, big arms, and broad shoulders—over extremely lean or overly muscular builds.
The hosts explore how attractiveness affects relationships differently across genders. According to Williams and Thomas's research, women tend to have stronger negative reactions to male inexperience than vice versa. Additionally, highly attractive individuals often face unique relationship challenges due to perceived alternative mating options, which can lead to competition and relationship strain.
Murphy and Williamson discuss distinct patterns in male and female sexual behavior. Men typically show higher socio-sexuality, displaying greater desire for variety and openness to casual sex. They note that men's stronger aversion to partner infidelity stems from evolutionary concerns about cuckoldry.
The hosts examine the "gay uncle" mechanism as a possible explanation for the evolutionary persistence of homosexuality. Murphy points to the Samoan Fa'afafine as an example, where third-gender individuals contribute to their nieces' and nephews' welfare, though he expresses skepticism about this being a comprehensive explanation for homosexuality's persistence.
Modern relationship patterns show significant shifts, particularly in how educated, high-earning women increasingly "marry down" in status. Murphy introduces the term "hyperandry" to describe this phenomenon, noting that while society is becoming more accepting of these arrangements, research indicates they may lead to poorer relationship outcomes.
Murphy's ongoing research examines how women's mate preferences adapt to changing socioeconomic conditions, citing examples like the Palyan of South India, where female provisioning exceeds male provisioning. The hosts also discuss obesity's impact on marriage and birth rates, with Williamson introducing the concept of "mirror widow distortion" to explain how weight changes affect self-perception and mating prospects.
1-Page Summary
The hosts delve into the complex world of mate preferences and perceptions of attractiveness, discussing how differing standards for aesthetics and suitability vary between genders and within different social contexts.
The discussion highlights that while men often strive for an extremely lean appearance, women tend to prefer a man with a more moderate physique.
The best study on the subject by Proust and colleagues demonstrates that women, when interacting with 3D models of various penis-shaped objects, have a preference for sizes larger than average for long-term relationships. The ideal size is considered to be 6.3 inches in length, a figure higher than the average 5.16 inches. This places it at about the 95th percentile of size, comparable to a height of six-foot-two. For circumference, the preference hovers around 4.8 to 5 inches, surpassing the average circumference of 4.59 inches.
Women express a preference for a penis size that is larger than any they had ever encountered. However, despite these preferences, women are likely to be more flexible in practice. Additionally, there is a threshold for penis size; if too large, it may be uncomfortable. It's noted that about 27% of women reported ending a relationship at least in part due to a partner's insufficient size.
Chris Williamson and Macken Murphy discuss the concept of a protective physique, where women favor men who look more formidable or likely to win in a fight. Traits such as strong hands, big arms, and broad shoulders contribute to this perception, marking a departure from the overly lean or muscular look. The notion of "dad bods" is brought up, suggesting women might favor men who appear to have more paternal qualities instead of those preoccupied with excessive self-beautification.
The podcast explores how men and women respond differently to attractivness and how it impacts relationships.
Murphy discusses findings from a paper by Williams and Thomas that revea ...
Mate Preferences and Perceptions of Attractiveness
Conversations between Murphy and Williamson shed light on the varying socio-sexual patterns between men and women, with implications for genetic propagation and relationship dynamics.
Murphy discusses the concept of "body count" as an indicator of socio-sexuality, suggesting that in his experience, men view having a sexual history as normal and expected, often equating a lack of sexual history with social maladjustment. This is reflective of a broader pattern where men, on average, tend to desire more variety in their sexual partners and are more open to casual sex — traits that feature heavily in non-monogamous settings.
Williamson and Murphy highlight that socio-sexual desires could resurface as a dominant trait in men, potentially leading to infidelity, especially when relationship satisfaction wanes. They acknowledge the implication that socio-sexual desires might affect non-monogamous benefits and dynamics differently for men and women but offer no definitive stance on this difference. However, they do mention that men and women may cheat with different types of people.
Both hosts also touch on the "optionality distress," indicating that individuals with many dating options, such as attractive women and high-status men, might experience stress due to these options. Murphy refers to individuals with a low level of jealousy and high level of extra-pair mating motivation, which entails a strong desire for multiple sexual partners.
Murphy and Williamson discuss an asymmetry in socio-sexual behavior where men engage in behavior to offset the risk of cuckoldry, indicating a strong aversion to partner's sexual infidelity. This aversion, Murphy states, can be considered "true disaster mode for a male" due to the evolutionary costs associated with raising a child not genetically theirs.
Studies suggest that men are more adverse to their partners being sexually intimate with others, as opposed to being emotionally intimate, due to the risk of cuckoldry and the resulting genetic propagation concerns. Williamson notes a system where this aversion might be strategically overlooked, as in the Himba society of Namibia, where men tolerate their wives' infidelity, since men benefit by having extramarital affairs themselves, thus spreading their genes in other nests.
Murphy discusses the "rich gay uncle" hypothesis, which posits that homo ...
Socio-Sexual Differences Between Men and Women
The podcast delves into the shifts seen in relationship dynamics, showcasing how social evolution is affecting love and marriage.
The conversation highlights a transformative trend where highly educated, successful women are often coupling with men of lesser socioeconomic status.
Macken Murphy addresses the reversal of traditional matchmaking norms, a phenomenon he terms hyperandry—when men "marry up" in status. Societal adjustments and acceptance of high-earning women marrying men of lower economic standing are noted, now often resulting in benign humor rather than humiliation. This shift is apparent in Europe, where data suggests an increased occurrence of marriages with a higher-status woman linked to poorer relationship outcomes, including higher chances of domestic violence. Thus, cultural adaptations reflect changes in attitudes toward these relationship dynamics, despite potential tensions.
Researchers are investigating whether women's mate preferences for "marrying up" are malleable or rigid. Murphy's research, currently under peer review, probes how behavior adjusts to socioeconomic changes. He discusses the flexibility of mate preferences and society's ability to adapt over time, pointing towards evidence from cultural anthropology, such as the Palyan of South India, where female provisioning exceeds male provisioning, contrary to traditional Western expectations.
Trends in Mating and Relationship Dynamics
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