Relationships Flashcards
What is sexual selection?
An evolutionary explanation of partner preference. Attributes or behaviours that increase reproductive success are passed on and may become exaggerated over future generations of offspring.
What are the two main forms of sexual selection?
Intra-sexual (within) which is mate competition
Inter-sexual (between) which is mate selection
What is intra-sexual selection?
- Preferred male strategy
- Refers to competition between males to be able to mate with females
- Winner reproduces and passes on characteristics that contributed to his victory to his offspring
- Leads to dimorphism (differences between men and women)
Larger, stronger, more aggressive males win - Anisogamy dictates males mate with as many fertile women as possible and have a preference for characteristics of youth and fertility
What is inter-sexual selection?
- Preferred strategy of the female – quality over quantity.
- Ova are rarer than sperm and require greater energy to produce. Women therefore need to be choosy and pick the most genetically fit partner who is able and willing to provide resources.
- This female preference determines which features are passed on to their offspring.
E.g if height is considered an attractive trait then, over successive generations of females, it would increase in the male population because females would mate with tall males and, over time produce sons who are taller with each generation.
What is Fisher’s hypothesis?
‘Sexy son hypothesis’ - a female mates with a male who has a desirable characteristic, and this ‘sexy’ trait is inherited by son. This increases the likelihood that successive generations of females will mate with her offspring.
What is anisogamy?
differences between male and female sex cells
Difference between gametes in males and females?
male = sperm
female = egg/ova
Difference between reproductive life in males and females?
male = long so can father thousands
female = short only between puberty and menopause
Difference between characteristics sought through intersexual selection in males and females?
male = young, hourglass figure, large eyes, rosy cheeks
female = faithful, strong, committed, gain resources
Difference between reproductive behaviour in males and females?
male = promiscuous
female = be choosy
What did Buss and Schmitt research?
men tend to be more likely to have short-term relationships or one night-stands than women
supports evolutionary theory because men have a promiscuous reproductive behaviour and a long reproductive life
What did Buss research?
asked male and female students to imagine their current boy/girlfriend either having sex with someone else or in love with them. they were wired up to measure stress responses. men became more distressed at sex, women at partner in love with someone else.
supports evolutionary theory because women want committed and faithful men who will provide for them. men want their genes passed on and don’t want to care for another man’s baby.
What did Ellis and Symons research?
found that men are more likely to have sexual dreams than women, especially those involving multiple or anonymous partners and strangers.
promiscuous even when unconscious = evolutionary drive
What was Clark and Hatfield’s study about?
conducted a study to investigate the differences in reproductive behaviour between men and women
What was Clark and Hatfield’s experiment?
attractive male and female experimenters approached strnagers on an american uni campus and said:
’ Hi, I’ve noticed you around campus and I find you very attractive’ and then asked them one of three questions:
- Would you go on a date with me?
- Would you go back to my apartment?
- Would you have sex with me?
What were results for males?
- 50%
- 69%
- 75%
What were results for females?
- 50%
- 6%
- 0%
What are the strengths of the evolutionary theory?
- evidence = clark + hattfield
- research support = buss survey
What are the weaknesses of the evolutionary theory?
- lacks temporal validity = bereszkei argues women have changed preferences
What is self-disclosure?
a process of communication by which one person reveals information about themselves to another.
What is self-penetration theory?
gradual process of revealing your inner self to someone else. or giving your deepest thoughts and feelings
What did Altman and Taylor believe?
self-disclosure has two elements – breadth and depth and as both of these increase, romantic partners become more committed to each other.
How does a relationship start?
We start with disclosing a high amount of information but it is low-risk and superficial information we would tell to anyone. The breadth of the disclosure is narrow and many topics are ‘off-limits’ at the start of a relationship. We don’t want to reveal too much too soon.
How does a relationship develop?
self-disclosure becomes deeper, removing more and more layers to reveal our true selves. The topics cover wider areas and include things that are really important to us. Eventually we reveal intimate, high-risk information e.g painful memories and experiences, strongly held beliefs and secrets.