Chapter.11 : Prosocial Behavior
11.1 : What are the basic motives that determine whether people
help others ?
Basic Motives Underlying Prosocial Behavior: Why Do People Help ?
- This chapter will consider the major causes of prosocial behavior.
o Prosocial Behavior : any act performed with the goal of benefiting another person.
▪ The chapter is concerned with prosocial behavior that is motivated by altruism.
• Altruism : desire to help another person even if it involves a cost to helper.
o Altruism is helping purely out of desire to benefit someone else with no
benefit to oneself.
Evolutionary Psychology : Instincts and Genes
- According to Charles Darwin’s theory of evolution, natural selection favors genes that promote survival
of individual.
o Any gene that furthers out survival and increases probability we will produce offspring is passed
on from generation to generation.
- The field of evolutionary psychology is the attempt to explain social behavior in terms of genetic factors
that have evolve over time according to principles of natural selection.
- It would seem that over the course of human evolution altruistic behavior would disappear.
o Because people who acted that way would put themselves at risk so they produce fewer
offspring that who acted selfishly.
▪ Genes promoting selfish behavior SHOULD be more likely to be passed on.
- KIN SELECTION :
o Kin Selection : idea that behaviors that help a genetic relative are favored by natural selection.
o People can increase that their genes will be passed on by ensuring their genetic relatives have
children.
▪ Because a person’s blood relatives share some of his or her genes, the more that person
ensures their survival, the greater chance his or her genes will flourish in the future.
• Natural selection should favor altruistic acts directed toward genetic relatives.
o People reported that they would be more likely to help genetic relatives than nonrelatives in life-
and-death situations.
▪ People are most likely to help to ensure survival of their genes.
▪ Kin selection isn’t limited to one gender or culture.
o Kin selection may have ingrained in human behavior, and as a result genes of people who help
their relatives are more likely to survive.
, - THE RECIPROCITY NORM :
o Norm of Reciprocity : expectation that helping others will increase the likelihood that they will
help us in the future.
o Those who are most likely to survive are people who develop understanding with their
neighbors about reciprocity,
▪ “I will help you now, with the agreement that when I need help, you will return the
favor.”
o The norm of reciprocity may have become genetically based.
▪ The emotion of gratitude evolved in order to regulate reciprocity.
• Gratitude : positive feelings that are cause by perception that one has been
helped by others.
▪ If someone helps us, we feel gratitude, which motivates us to return the favor.
- GROUP SELECTION :
o Classic evolutionary theory argues that natural selection operates on individuals.
▪ People who have traits that make them more likely to survive are more likely to
reproduce and pass those traits to future generations.
o Some argue that natural selection also operates at the group level.
▪ A group with altruistic individuals is more likely to survive.
o Group selection is controversial and not supported by biologists, but it has prominent
proponents.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller asbinmahfouz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £5.75. You're not tied to anything after your purchase.