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How Men Fall In Love And For How Long
- 2. This presentation is taken from The Origin of Emotions
which can be downloaded at: ww.theoriginofemotions.com
Men In Love 19-Aug-09 2 copyright © Mark Devon 2009
- 3. This presentation will make the following assertions:
• men can only fall in love with a stranger
• men fall in love after 4 months of daily interaction
• men fall out of love 46 months after meeting a stranger
Men In Love 19-Aug-09 3 copyright © Mark Devon 2009
- 4. Men in love simultaneously feel three positive emotions
when they see or hear the woman they love.
positive emotion trigger purpose
monogynistic love " The woman I love is happy." encourage men to support women
visual/audible pleasure the sight or sound of women encourage men to seek women
affection the sight or sound of familiar people encourage everyone to interact with kin
Men In Love 19-Aug-09 4 copyright © Mark Devon 2009
- 5. Men fall in love 4 months after meeting a woman and
fall out of love 42 months later or 46 months after meeting her.
very strong monogynistic love
strong
moderate
42 months
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 5 copyright © Mark Devon 2009
- 6. After 46 months, men continue to feel
the weaker emotions of visual/audible pleasure and affection.
very strong monogynistic love
visual/audible pleasure
strong
affection
moderate
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 6 copyright © Mark Devon 2009
- 7. Men fall in love when one woman repeatedly triggers their
visual/audible pleasure and affection for 4 months.
very strong monogynistic love
visual/audible pleasure
strong
affection
moderate
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 7 copyright © Mark Devon 2009
- 8. Visual/audible pleasure is triggered
by the sight or sound of women.
positive emotion trigger purpose
monogynistic love " The woman I love is happy." encourage men to support women
visual/audible pleasure the sight or sound of women encourage men to seek women
affection the sight or sound of familiar people encourage everyone to interact with kin
Men In Love 19-Aug-09 8 copyright © Mark Devon 2009
- 9. Visual/audible pleasure is specifically triggered by features
that fertile, non-pregnant women have and other humans do not.
children men post- fertile fertile
menopausal pregnant non-pregnant
women women women
Men In Love 19-Aug-09 9 copyright © Mark Devon 2009
- 10. The following are features
that fertile, non-pregnant women have and other humans do not.
hourglass figure - combination of protruding breasts, wide hips, narrow waist
protruding breasts
plump lips
wide hips - ideal hip-to-waist ratio is 0.7
slender appendages - face, neck, arms, hands, fingers, legs, feet, toes
8% shorter height - 8% is ideal (about 5½" shorter than a 5'10" man)
feminine voice - pitch and resonance midway between men and children
beardless face - beards evolved so men do not court men
pubic hair
non-grey hair
narrow waist
Men In Love 19-Aug-09 10 copyright © Mark Devon 2009
- 11. The more exclusive a feature is to fertile, non-pregnant women
the stronger the visual/audible pleasure it triggers in men.
post- fertile fertile
strength menopausal pregnant non-pregnant
of effect children men women women women
strong hourglass figure
protruding breasts
moderate
plump lips
wide hips
slender appendages
weak
8% shorter height
feminine voice
beardless face
pubic hair
very weak
non-grey hair
narrow waist
Men In Love 19-Aug-09 11 copyright © Mark Devon 2009
- 12. To fall in love, a man must feel
strong visual/audible pleasure for 4 months.
very strong monogynistic love
visual/audible pleasure
strong
affection
moderate
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 12 copyright © Mark Devon 2009
- 13. Strong visual/audible pleasure can only be triggered by an hourglass figure,
which confirms that a woman is fertile and non-pregnant.
post- fertile fertile
strength menopausal pregnant non-pregnant
of effect children men women women women
strong hourglass figure
protruding breasts
moderate
plump lips
wide hips
slender appendages
weak
8% shorter height
feminine voice
beardless face
pubic hair
very weak
non-grey hair
narrow waist
Men In Love 19-Aug-09 13 copyright © Mark Devon 2009
- 14. 4 months of strong visual pleasure confirms that a woman
was not impregnated by another man just before meeting.
very strong
visual/audible pleasure triggered by non-pregnant woman
strong
visual/audible pleasure triggered by woman impregnated
moderate just before meeting a man as she loses her hourglass figure
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 14 copyright © Mark Devon 2009
- 15. this is a
tangent
The visual/audible pleasure that a woman triggers in a man declines over time
which encourages men to maximize the genetic diversity of their offspring.
very strong
visual/audible pleasure
strong
moderate
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 15 copyright © Mark Devon 2009
- 16. this is a
tangent
Over 8 years, the visual audible pleasure that Elizabeth Hurley
triggered in Hugh Grant declined enough that . . .
very strong
strong
visual/audible pleasure
moderate
weak
1987 1988 1989 1990 1991 1992 1993 1994 1995
Men In Love 19-Aug-09 16 copyright © Mark Devon 2009
- 17. this is a
tangent
. . . that Divine Brown, a street prostitute,
became relatively more attractive to Hugh.
very strong
strong
visual/audible pleasure
moderate
weak
1987 1988 1989 1990 1991 1992 1993 1994 1995
Men In Love 19-Aug-09 17 copyright © Mark Devon 2009
- 18. this is a
tangent
Women frequently change their appearance
to try to slow the decline of visual/audible pleasure.
very strong
visual/audible pleasure
strong change appearance frequently
moderate
change appearance rarely
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 18 copyright © Mark Devon 2009
- 19. Affection is triggered by
the sight or sound of familiar people.
positive emotion trigger purpose
monogynistic love " The woman I love is happy." encourage men to support women
visual/audible pleasure the sight or sound of women encourage men to seek women
affection the sight or sound of familiar people encourage everyone to interact with kin
Men In Love 19-Aug-09 19 copyright © Mark Devon 2009
- 20. Affection is specifically triggered by features that
modern humans have and other primates do not.
arboreal terrestrial small-brain modern
primates primates humans humans
Men In Love 19-Aug-09 20 copyright © Mark Devon 2009
- 21. The following are features
that modern humans have and other primates do not.
singing, poetry, alliteration - logically sequenced acoustics from human voice
talking
smiling - corners of mouth turned up, not showing teeth
eyebrows, white eyes, nose, philtra, lips, chin - everted lips
hands with long opposable thumbs
walking bipedally - or dancing
feet without opposable toes
bums without tails
Men In Love 19-Aug-09 21 copyright © Mark Devon 2009
- 22. The more exclusive a feature is to modern humans
the stronger the affection it triggers in others.
strength arboreal terrestrial small-brain modern
of effect primates primates humans humans
strong singing, poetry, alliteration
talking
smiling
moderate eyebrows, white eyes, nose, philtra, lips, chin
hands with long opposable thumbs
walking bipedally
feet without opposable toes
weak
bums without tails
Men In Love 19-Aug-09 22 copyright © Mark Devon 2009
- 23. this is a
tangent
The affection a feature triggers is stronger
if there is proof of interaction.
• singing to music
• dancing to music
• making eye contact
Men In Love 19-Aug-09 23 copyright © Mark Devon 2009
- 24. this is a
tangent
While seeing white eyes
triggers moderate affection . . .
Men In Love 19-Aug-09 24 copyright © Mark Devon 2009
- 25. this is a
tangent
. . . making eye contact triggers stronger affection
because it confirms interaction.
Men In Love 19-Aug-09 25 copyright © Mark Devon 2009
- 26. Affection starts weak and grows stronger
the more time you spend with someone.
very strong
strong
affection
(full-time interaction)
moderate
affection
weak (part-time interaction)
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60
months since first meeting someone
Men In Love 19-Aug-09 26 copyright © Mark Devon 2009
- 27. To fall in love, a man must feel affection that
grows from weak-to-moderate strength in 4 months.
very strong monogynistic love
visual/audible pleasure
strong
affection
moderate
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 27 copyright © Mark Devon 2009
- 28. Only strangers
can start at weak affection.
very strong
affection
(old flames, family, friends)
strong
affection
moderate (new women)
weak
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 28 copyright © Mark Devon 2009
- 29. Because men can only fall in love with strangers
they maximize the genetic diversity of their offspring.
woman child 1 child 2 child 3 child 4 child 5 child 6
Mike falls in love with one woman for life
Anne MA MA MA MA MA MA
Mike only falls in love with strangers
Anne MA
Betty MB
Carol MC
Dawn MD
Elaine ME
Francis MF
Men In Love 19-Aug-09 29 copyright © Mark Devon 2009
- 30. Strangers can only trigger moderate affection by month 4
if they are interacting on a full-time basis.
very strong
strong
affection
(full-time interaction)
moderate
affection
(part-time interaction)
weak
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 30 copyright © Mark Devon 2009
- 31. Because men can only fall in love with women who interact on full-time basis
they do not fall in love with women who could have been simultaneously courting another man.
very strong
strong
moderate
affection
(part-time with man 1)
affection
weak
(part-time with man 2)
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 31 copyright © Mark Devon 2009
- 32. Men fall out of love after 42 months
or 46 months after meeting a woman.
very strong monogynistic love
visual/audible pleasure
strong
affection
moderate
42 months
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 32 copyright © Mark Devon 2009
- 33. Love encourages
men to support women.
positive emotion trigger purpose
monogynistic love " The woman I love is happy." encourage men to support women
visual/audible pleasure the sight or sound of women encourage men to seek women
affection the sight or sound of familiar people encourage everyone to interact with kin
Men In Love 19-Aug-09 33 copyright © Mark Devon 2009
- 34. By supporting women,
men indirectly support their children.
monogynistic
love
women men
maternal
love
children
Men In Love 19-Aug-09 34 copyright © Mark Devon 2009
- 35. Men maximize the number of two-parent children they have
by starting the next child when the current child no longer needs full-time care.
child 1 child 2 child 3 child 4 child 5 child 6
child no longer needs full-time care
Anne MA
Betty MB
Carol MC
Dawn MD
Elaine ME
Francis MF
Men In Love 19-Aug-09 35 copyright © Mark Devon 2009
- 36. Children no longer need full-time care when their
first set of teeth have fully erupted at 33 months.
• before their first set of teeth fully erupt, children need assistance to eat
• mothers must first breastfeed, then transfer of masticated food to their children
Men In Love 19-Aug-09 36 copyright © Mark Devon 2009
- 37. Adding 9 months of gestation to 33 months of post-natal care
equals a total support time of 42 months.
very strong monogynistic love
strong
9 months 33 months
gestation post-natal support
moderate
42 months
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 37 copyright © Mark Devon 2009
- 38. There is ample evidence that men
do not love one woman forever.
• fireworks do not continue
• 50% of marriages end in divorce
• affection keeps the other 50% together
Men In Love 19-Aug-09 38 copyright © Mark Devon 2009
- 39. Based on 2002 US Census Data,
the average length of first marriages is 44 months.
men women
average age at first divorce 30.5 29.0
average age at first marriage 26.9 25.3
average length of marriage 3.6 3.7
average length of marriage 3.7 years
average length of marriage 44 months
Men In Love 19-Aug-09 39 copyright © Mark Devon 2009
- 40. Assuming 16 months of courtship and 44 months of marriage,
couples typically divorce 14 months after the man falls out of love.
very strong monogynistic love
strong
16 months 44 months
of courtship of marriage
moderate 14 months
to divorce
weak
0 4 8 12 16 20 24 28 32 36 40 44 46 48 52 56 60
months since first meeting a woman
Men In Love 19-Aug-09 40 copyright © Mark Devon 2009