Relationships Flashcards
(108 cards)
What is sexual selection?
The view that competition for mates between individuals of the same sex affects the evolution of certain traits
What is the benefit of animals having specific features?
Survival of the fittest
If it provides a benefit to survival e.g. giraffe long neck eat leaves
Also possess features that make them attractive to members of the opposite sex and to allow them to compete better with members of the same sex
What is Anisogamy?
Refers to the differences between m and f sex cells (gametes)
What is anisogamy for men?
Males produce millions of sperm as they cannot be sure of paternity and can in theory reproduce with very little cost to their reproductive fitness, mating with millions of women if they had access to them
What is anisogamy for women?
Certain of paternity and produce very limited eggs in their lifetime (about 300), many of which will not be used. When they do mate they are left vulnerable during pregnancy and for many years following raising the child which requires a great deal of investment from the female.
What is intersexual selection?
Between the sexes
Preferred strategy of the female, quality over quantity
Trivers pointed out that the female makes a greater investment of time, commitment and other resources before, during and after birth of her offspring.
Optimum mating strategy is to produce the most genetically fit partner who is able to provide resources
What is the runaway process?
Females would select e.g. the tallest males in each generation and thus that characteristic becomes exaggerated
What is Fisher’s sexy son hypothesis?
The genes we see today are those that enhanced reproductive success
A female who mates with a male with a certain characteristic then will then have sons who inherit this ‘sexy’ trait. Then her sons are also more likely to be selected by successive generations of females who will mate with her offspring. Therefore, the preference for this ‘sexy’ trait is perpetuated
What is intra-sexual selection?
Within each sex - such as strategies between males to be the one selected
Preferred strategy of the male, quantity over quality
Competition between males to be selected to mate with a female. Winner of competition reproduces and therefore the characteristics that contributed to his victory may be passed on to his offspring
What is dimorphism?
‘Two forms’
Males and females end up looking very different because of intra-sexual selection.
What are there behavioural consequences of intra-sexual selection?
Characteristics that are favoured and passed on are those that allow a male to outcompete his rivals, including deceitfulness, intelligence and aggression. e.g. males may benefit form behaving aggressively in order to acquire fertile females and protect them from competing males
This leads to the selection of aggressiveness in males
Evaluate research support for inter-sexual selection?
One strength - evidence supporting the specific role of female choosiness in heterosexual partner preference
Clark and Hatfield sent male and female psychology students out across a uni campus
They approached other students individually, asking “I have been noticing you around campus. I find you very attractive. Would you go to bed with me tonight?”
No female agreed but 75% of males did
This supports the view that females are choosier than males when it comes to selecting sexual partners and that males have evolved a different strategy to ensure reproductive success
Evaluate counterpoint to research support for inter-sexual selection?
The argument from sexual selection that one strategy is adaptive for all males and another is adaptive for all females is simplistic. At the very least it appears that strategies differ according to the length of the relationship
Sexual strategies theory by Buss and Schmitt argues that both male and females adopt similar mating strategies when seeking long-term relationships
Both sexes are very choosy and look for partners who are loving, loyal, kind etc.
This is a more complex and nuanced view of how evolutionary pressures influence partner preferences which takes account of the context of reproductive behaviour
Evaluate research support for intra-sexual selection
Another strength is evidence to support the predictions of the sexual selection theory
Buss carried out a survey of 10,000 adults in 33 countries
He asked questions relating to a variety of attributes that evolutionary theory predicts are important in partner preference.
He found that females placed greater value on resource-related characteristics than males did, such as good financial prospects and ambition.
Males valued physical attractiveness and youth (as signs of good reproductive capacity) more than females did
These findings reflect consistent sex differences in partner preferences and support the predictions from sexual selection theory
Evaluate how social and cultural influences are underestimated
One limitation is that evolutionary theories overlook the influences of social and cultural factors on partner preference
Partner preferences over the past century have been influenced by rapidly changing social norms of behaviour
These develop much faster than evolutionary timescales imply and have instead come about due to cultural factors (e.g. availability of contraception)
Women’s greater role in the workplace mean they are no longer dependent on men to provide for them (despite the ongoing inequality in earning power).
Bereczkei et al argue that this social change has consequences for women’s mate preferences which may no longer be resource-oriented
Therefore, partner preferences today are likely to be the outcome of a combination of evolutionary and cultural influences
Any theory that fails to account for both is a limited explanation
What is self-disclosure?
Revealing personal information about yourself
Romantic partners reveal more about their true selves as their relationship develops
These self-disclosures about one’s deepest thoughts and feelings can strengthen a romantic bond when used appropriately
Who developed the social penetration theory?
Altman and Taylor
What is the social penetration theory?
Gradual process of revealing your inner self to someone else, giving away your deepest thoughts and feelings
In romantic relationships, it involves the reciprocal exchange of information between intimate partners.
As they increasingly disclose more and more, romantic partners ‘penetrate’ more deeply into each other’s lives and gain a greater understanding of each other.
Who developed the idea of Breadth and Depth of self-disclosure?
Altman and Taylor
What is breadth and depth of self-disclosure?
As both of these increase, romantic partners become more committed to each other.
Altman and Taylor refer to this process having many layers with us disclosing lots of information about ourselves at the start but this being mostly superficial and low risk information that we would normally reveal to to those around our social circle.
The breadth of topics we discuss is narrow at this point as many topics are “off-limits” in the early stages of a relationship.
Revealing too much at this point could threaten the relationship as the other person feels put off before the relationship has any chance to establish itself.
Moderate levels of self-disclosure in the early stages are seen as most effective with Derlaga et al (1979) suggesting the listener should know them better without the information being too personal.
What did Reis and Shaver say about self-disclosure?
For a relationship to develop, as well as increase in breadth and depth there needs to be a reciprocal element to disclosure
Once you have decided to disclose something that reveals your true self, hopefully your partner will respond in a way that is rewarding, with empathy and their own intimate thoughts and feelings
So there is a balance of self-disclosure between both partners in a successful romantic relationship, which increases feelings of intimacy and deepens the relationship
Evaluate research support for self-disclosure
Hendrick
Predictions about self-disclosure by social penetration theory have been supported with researchers finding strong correlations between several measures of satisfaction and self-disclosure within heterosexual relationships.
Men and women who used self-disclosure reported to believe their partners did the same and rated themselves as more satisfied and committed to their relationships.
Research by Laurenceau (2005) has found the reverse is also true with less intimate couples self-disclosing less often also. This research support for self-disclosure suggests it is important and has validity.
Evaluate a counterpoint to Hendrick’s research
Much self-disclosure research is not correlational, including Sprecher and Hendrick’s study
It is usually assumed that greater self-disclosure creates more satisfaction by a correlation does not tell us of this is a valid conclusion to draw
Alternative explanations are just as likely
For instance, it may be that the more satisfied the partners are, the more they self-disclose.
Or perhaps self-disclosure and satisfaction are independent of each other and both are caused by a third variable
This could be the amount of time the partners spend together
Therefore self-disclosures may not cause satisfaction directly, reducing the validity of social penetration theory of self-disclosure
Evaluate how research into self-disclosure has real world application
Self-disclosure research does provide us with real-world applications as it can help improve relationships through better communication. If self-disclosure can improve intimacy then partners who are less skilled at communication can be taught to open up and share more about themselves. This can help improve relationships as part of counselling or couples therapy to save relationships to increase satisfaction and commitment.