Genetic mutations but upbringing has a role too in development
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What does natural selection have to do with the inheritance of behaviour?
It cannot select a behaviour but it selects the mechanisms that lead to a behaviour
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Are we hard-wired to be disgusted by specific things?
No just anything that threatens our wellbeing
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What was the procedure of the Curtis et al study?
77,000 people were given an online survey consisting of 20 images and they had to rank their level of disgust out of five; 7 pairs had an infectious image and a similar image but non-infectious
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What was the aim of the Curtis et al study?
To investigate if there was a pattern in people's disgust responses
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What were the findings of the Curtis study?
People ranked images that would damage the immune system higher; Disgust reactions decreased with age
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What were the conclusions of the Curtis et al study?
Disgust is evolutionary to protect our immune systems and increase the chance of reproduction (keeps you alive to reproduce)
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What is confirmation bias?
Participants see what they expect to see
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What does using 77,000 participants show?
High population validity
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What assumptions are we making with this study in particular?
The behaviour of disgust is hypothetical of early homo sapiens; Cultural influences have not influenced behaviour
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What was the procedure of the Fessler study?
Asked 496 women a series of questions to determine if they were experiencing morning sickness before giving them 32 stomach - churning situations to consider which they had to rank on a level of disgust
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What was the aim of the Fessler experiment?
To investigate the nausea experienced by women in their varying trimesters of pregnancy
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What were the findings of the Fessler study?
The participants with morning sickness only found the situations relating to food sickening; Women in their first trimester scored higher in disgust sensitivity than those in other trimesters
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What can we conclude from the Fessler study?
Sensitivity decreases as risk of disease decreases; Many diseases are food-bourne but our ancestors could not afford to be picky; Natural selection compensated those susceptible to disease with disgust as the form of protection
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What sort of study was the Fessler study?
Snapshot - don't know what they found disgusting before
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Give two other grenades relating to the Fessler study and how
Ethnocentricity - different cultures find different things disgusting; Nature vs nurture - led to believe certain things are disgusting by upbringing
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What assumptions are we making in general with this question?
Disgust is measurable and same measurement tool can be used cross-culturally; Evolutionary theory is correct
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What behaviour are we researching in this question?
Disgust
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What evolutionary explanation are we investigating?
That disgust has an adaptive value
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Can someone's 'utterly disgusting' be the same as someone else's 'utterly disgusting'?
No
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Other cards in this set
Card 2
Front
What suggests disgust is evolutionary?
Back
The fact there are universal sources of disgust
Card 3
Front
What does it mean if something is adaptive?
Back
Card 4
Front
What could have caused disgust to appear?
Back
Card 5
Front
What does natural selection have to do with the inheritance of behaviour?
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