Relationships Flashcards
What is sexual selection?
Evolutionary explanation of partner preference - behaviours and characteristics that increase reproductive success are passed on and others discarded
What will successful behaviours and characteristics increase the chances of?
Survival of our gene pool
What does anisogamy refer to?
Differences in sex cells (gametes) leading to different behaviours in males and females
What are male gametes?
Sperm - very small and highly mobile, continuously produced, don’t take a lot of energy, unlimited supply
What are female gametes?
Ova - limited supply, have at puberty total number they will ever produce, limited age range to produce offspring, huge investment
What is intra sexual selection?
Members of the same sex competing for members of the opposite sex (USED BY MALES)
What is inter sexual selection?
Members of different sexes choosing a partner from the opposite sex (USED BY FEMALES)
Why may females be more choosy over their partner selection?
Greater investment in time and commitment and the need for ongoing support for her child
Why would a females limited supply of ova have more serious consequences?
Limited! Needs to ensure survival of her gene pool
What type of males will females choose?
Physical health and strength but also be committed to extended period of child growing up - these traits will be carried down to next generation
What is the best way for men to ensure survival of their gene pool?
Quantity over quality - unlimited supply and time frame and relative lack of responsibility for the child
Why do males need to make sure they are chosen?
‘Picky’ females, need to be fit enough to compete with other males and to protect their female from other men
What has the competition between men lead to?
Dimorphism - males are bigger and stronger than females and therefore are likely to carry on this characteristic
What sort of females do males show a preference to?
Fertile females, youthful indicators such as hip-waist ratio
What is a strength of anisogamy?
Buss 1989 surveyed 10000 adults in 33 countries asking questions relating to partner preference. Found females valued resource related characteristics and males valued god looks and preferred younger partners
What is a strength of selection strategies?
Clark and Hatfield’s study - male and female psychology students ‘will you go to bed with me tonight?’ not 1 female agreed compared to 75% of men, supporting idea females are choosier
What research shows male preferences correspond with evolutionary theory?
Singh 1993 2002 - studied waist hip ratio found overall preference of 0.7 - wider hips and narrower waist, signal they are fertile but not currently pregnant
How does Waynforth and Dunbar 1995 support differences for partner preferences?
Lonely hearts ad’s found woman more than men offered physical attractiveness and indicators of youth, men offered resources more than woman did
What is one weakness of sexual selection strategies?
Partner preference is also influenced by social and cultural factors, such as social norms, availability of contraception, women’s greater role in workplace MEANING WOMAN MAY NOT BE AS RELIANT ON MALES FOR RESOURCES SO CHOICE OF MATE MAY CHANGE
What is another weakness of sexual selection strategies?
Cannot explain relationships such as homosexual explanations, woman being older than men etc
What are the 3 factors affecting attraction?
Self disclosure, physical attractiveness and filter theory
What is self disclosure?
Telling the other person sensitive information about ourselves (2 ELEMENTS BREADTH AND DEPTH)
What does sharing secrets often lead to?
Reciprocal self-disclosure, through this we build trust and deepen our bond
What did Altman and Taylor devise to describe how the relationship develops?
Social penetration theory - involves gradual reciprocal exchange of increasingly intimate information - conveying trust, expectation the other partner will reveal sensitive info in return, penetrating each other’s lives and develop a greater understanding