Evolution of Human Sexuality Topic 5
Unlock all answers in this set
Unlock answersquestion
Concealed Ovulation
answer
The exact timing of female ovulation (able to get pregnant) is unknown to both the male and female of a species
question
Estrus
answer
Is marked by increases in female sexual behavior (proceptivity) and attractiveness at the period of highest fertility just before ovulation Period of pronounced genital swelling "In Heat"
question
Receptivity
answer
Readiness to copulate when solicited by a male
question
Proceptivity
answer
Active encouragement and solicitations by females to copulate
question
Attractiveness
answer
Females become sexually exciting to males During estrus (in primates) males find females sexually attractive, thus initiating copulations
question
Bipedalism
answer
Centralized foramen magnum The vertebral column has distinct S-curve The pelvis rotates forward in humans, becomes shorter and bowl shaped The femur angles inward to the knee The foot develops a distinct arch Abducted big toe, used for toe off walking
question
Visual Cues
answer
By reducing swelling and movement of genitals, the visual cue indicating ovulation (loss of estrus) is no longer advantageous Males cannot see if females are ready to become pregnant
question
Olfactory Cues
answer
Males more often prefer a females odor during ovulation When not on contraception. Modern hygiene eliminates natural scent
question
Singh and Bronstad Study
answer
Males smelled female shirts from different times of their cycle (no contraception - 3 nights during ovulation and 3 during non-ovulation Males lead to believe one t-short worn by attractive female (and vice versa) Rated most attractive/sexier smell during ovulation
question
Lapdancers and Ovulation
answer
Received more tips when ovulating, no difference in tips present when ovulating and on contraceptives.
question
Vocal Studies and Ovulation
answer
Women had higher pitch voice during fertile phase and that voice was rated as being more attractive (bryant and haselton)
question
Behavioral Changes/Theories
answer
Concealed ovulation enhanced bond between man and women b/c continuous receptivity, perceptivity, and attractiveness Concealed estrus exploits male paranoia over paternity, enhances pair bond Concealed ovulation increases chances for paternal care
question
Hadza and Estrus
answer
Females still have concealed ovulation, estrus even more concealed by the smell of smoke.
question
Huala Menstrual Huts
answer
Menstruation is seen as toxic, men cannot go near menstruation huts, believed they will die if they come in contact with a woman who is menstruating.
question
Kodi - Dye Pots
answer
Men forbidden to touch dye pots, only women make the blue dye
question
Kodi - Blue Witches
answer
Blood is poisonous to others, associated with witchcraft
