Science of Attraction, Compatibility & Romance | Dr. Paul Eastwick

Dating apps create a highly unequal market where the most 'popular' individuals receive disproportionate attention, reinforcing a 'marketplace' theory of attraction. However, in real-world acquaintance, this effect is significantly reduced. As people spend time together, their individual opinions of attractiveness become more idiosyncratic, allowing for unique connections to form that are not dictated by consensual desirability.

Dr. Eastwick's research shows that while dating apps concentrate right swipes and messages on popular users, regular acquaintance leads to greater disagreement about who is 'hot' or 'desirable,' enabling more diverse pairings.

Contrary to the idea of an instant 'spark,' most successful relationships begin with middling first impressions. Attraction typically grows through a slow accumulation of unique, shared moments and reciprocal self-disclosure, where individuals pull out specific qualities in each other that others might not perceive.

Data on relationship development shows that typical first impressions are 'middling,' and attraction builds over time as people gather information, form 'little stories,' and experience unique interactions that cause their opinion to diverge from others.

Perceived similarity, the subjective feeling of having a lot in common, is far more important for relationship satisfaction than actual, objectively measured similarity. People engage in 'motivated reasoning,' emphasizing shared traits they value and downplaying differences when they like someone, which is a common bias in happy relationships.

Studies attempting to predict relationship success based on objective similarity (e.g., 83% match on assessed traits) yield results no better than a coin flip. However, couples in happy relationships often exhibit biases, perceiving greater similarity and positive traits in their partner, which is protective.

When evaluating real people they have met face-to-face, men and women exhibit nearly identical preferences for partner traits like ambition and even age (both preferring younger partners). This contradicts stated preferences in surveys and common evolutionary narratives, which often suggest men prioritize attractiveness and women prioritize earning potential.

Speed dating studies revealed that both men and women were equally drawn to ambitious partners. Similarly, in matchmaking data, both men and women showed a slight preference for younger partners, despite women often stating a preference for older men.

Individuals in happy, committed relationships tend to perceive alternative potential partners as less desirable than they objectively are. This 'derogation of alternatives' acts as a protective mechanism, reinforcing commitment and reducing perceived threats to the relationship.

Research shows that people in happy relationships consistently rate potential alternative partners as less appealing, even when objective metrics might suggest otherwise. This bias helps maintain satisfaction and stability within the primary relationship.

The subjective sense of a partner being a 'good lover' or likely to be one is a very strong predictor of overall relationship satisfaction and the desire for the relationship to continue. While sexual desire can fluctuate, it's not a fixed switch and can be rekindled, often rebounding from external attractions back onto the partner.

Studies consistently show a tight correlation between sexual satisfaction/desire for a partner and general relationship satisfaction. Research also indicates that sexual fantasies about others can sometimes increase desire for one's primary partner, suggesting a 'rebounding' effect.