Podcast Summary: The Why Factor – "Attraction"

Podcast: The Why Factor, BBC World Service
Episode: Attraction
Date: June 27, 2016
Host: Mike Williams

Overview

This episode of The Why Factor dives into the science, psychology, and evolutionary purpose behind human attraction. Through expert commentary, interviews with couples, and real-life speed-dating experiences, host Mike Williams explores why we are drawn to certain people, how attraction works on a chemical and sensory level, and how culture and biology intertwine to shape our choices in love and relationships.

Key Discussion Points & Insights

1. The Nature of Attraction

• Opening Question: What is attraction? Why are we drawn to some people and not others?
  • Christy and Claire, a couple together for 40 years, share their experience: for Christy, it was love at first sight; for Claire, it took six months.
    • [01:19] Claire: "Over six months, the attraction increased."
    • [01:55] Mike Williams: "So what happened over those six months? Did the attraction somehow come?"

2. Chemical and Psychological Triggers

• Dr. Anna Machin (Department of Experimental Psychology, Oxford): Explains the biochemistry of attraction.
  • Oxytocin: Released when you find someone attractive, makes you bold, "acts a little bit like alcohol."
    • [02:56] Dr. Machin: "Oxytocin works by inhibiting your usual social worries...it makes you less scared about being forward."
  • Dopamine: Promotes pleasure in social interactions.
    • [03:26] Dr. Machin: "You also get a release of dopamine...that makes you enjoy your interaction with the person."

3. Senses and First Impressions

• Visual Dominance: Attraction is initially driven by visual cues due to the large visual cortex in the brain.
  • [03:59] Dr. Machin: "In the very first instance, it's visual... Men and women give a good scan of the person's face and body."
  • Smell and taste play a role deeper into the interaction (kissing, proximity).
    • "You probably actually have to kiss them to actually taste and smell particular chemicals."

4. Evolutionary Purpose and Mate Value

• Indicators of Attractiveness: Linked to evolutionary fitness—signs of fertility, health, and genetic strength.
  • Men: Attracted to signs of fertility (waist-to-hip ratio of 0.7, hourglass figure), indicating low health risks.
    • [06:19] Dr. Machin: "The major indicator of that in women is the waist hip ratio...the ideal...is 0.7."
  • Women: Attracted to physical (broad shoulders, narrow waist—shoulder-to-waist ratio of 1.6) and resource indicators (dress, watch, wealth), signaling protection and provision.
    • "So men and women do look for very different things..."

5. Genetic Compatibility and Smell

• We’re subconsciously attracted to the scent of individuals with different immune genes (Major Histocompatibility Complex – MHC).
  • [09:04] Dr. Machin: "What we’re doing, when we smell someone...is we’re actually reading their genes."
  • [09:30] Mike Williams: "If the other person's immune system is dissimilar to your own, they smell good."

6. Speed Dating: Real-Life Experiments

• Observations from a speed dating event show participants often feel attraction based on looks first, then personality:
  • [10:34] Michael: "Looks provides a key to the door."
  • [11:12] Participant: "I think he just had a nice smile...He had really nice eyes, very friendly eyes."

7. Facial Features and Symmetry

• Prof. David Perrett (St. Andrews University): Facial symmetry, facial expressions, and "healthy" appearance are key.
  • [12:16] Dr. Machin: "People who have a high degree of symmetry...what that's saying is their genes...managed to do a pretty good job."
  • Universal attraction to symmetry stems from its signal of genetic robustness.

8. Role of Personality and Interaction

• While first impressions matter, longer-term attraction depends on intellectual, emotional, and behavioral factors.
  • [15:31] Claire: "I like intellectuals actually. They have to be sparky intellectuals for me."
  • Prof. Perrett: "The most important change we can make is one of how we interact with others."

9. From Lust to Love: Longevity of Attraction

• Initial chemical attraction (oxytocin, dopamine, lust) gives way to deeper bonds via beta endorphins ("natural opiates").
  • [16:34] Dr. Machin: "So what happens when you're in a long term relationship is that mechanism [beta endorphin] takes over from oxytocin...we're constantly drawn back to that person."
  • [17:49] Claire: "...the man stays around because...the relationship changes. So it changes from lust into a friendship. And then if you're lucky, you can have a friendship where the lust stays."

Notable Quotes & Memorable Moments

• On Love At First Sight
  [01:19] Christy: "It was heart thumping, jaw dropping. Amazing."

• On Chemical Effects of Attraction
  [02:56] Dr. Machin: "Oxytocin...acts a little bit like alcohol."

• On Essential Features
  [06:19] Dr. Machin: "The absolute ideal, what men find most attractive, regardless of culture...is 0.7. And that's really your classic hourglass figure."

• On Personality and Liking
  [15:31] Claire: "I like intellectuals actually. Yeah, they have to be sparky intellectuals for me."

• On Long-term Love
  [16:34] Dr. Machin: "What we tend to use for a long-term relationship is a chemical called beta endorphin...we're constantly drawn back to that person."

Timestamps for Important Segments

• 00:54: Opening discussion on the nature of attraction – Christy and Claire
• 02:39: Dr. Anna Machin on oxytocin and the onset of attraction
• 03:59: The dominance of visual cues in initial attraction
• 06:19: Evolutionary psychology of mate selection (waist-hip and shoulder-waist ratios)
• 09:04: Role of scent and genetic compatibility (MHC)
• 10:34: Insights from real-life speed daters on instant attraction
• 12:16: Prof. Perrett on facial features and genetic symmetry
• 15:31: Claire on the importance of intellectual and personality factors
• 16:34: Dr. Machin on the transition from lust to deep, enduring love

Takeaway

Attraction is a layered, multi-sensory process shaped by a complex mix of biology, chemistry, evolution, culture, and personal experience. From the immediate "wow" factor of looks to the deeper connections forged through shared values and personality, the episode highlights both the primal and the personal elements that draw us together—and keep us bonded over time.