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Lecture 5

Lecture 5 - 18.01.11.docx

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Department
Psychology
Course
PSYCH 178
Professor
Lofchie
Semester
Spring

Description
18 January 2011 Psych 178 – Lecture 5 The Person as a Machine – mechanical/physical sciences. Sociobiology – Personal Experience The theory is much better at the subhuman level because there are many phenomena which are contrary to the sexual survival theory: homosexuality, suicide, declining birth rates… • The deceit for men is that they are more caring than they actually are and women’s deceit is that “sexual favours will come later” • One girl’s parents found out her brother was homosexual and started giving her all the resources so that she can have children and pass on the genes. o Why homosexuality has survived has been theorized to be due to the fact that the gene for homosexuality is connected to a gene that provides protection against some illness – like sickle cell anemia. • Grandparents are more likely to try to have more children if they have a lot of daughters. • Hugh Hefner marrying the 24 year old – makes sense socioblologically because he is a wealthy high status male. Ultimate determinant of behaviour – genetic survival (distal) • We eat so we can survive and then reproduce. • We go to school, get a good job (more resources), attract a mate and then reproduce. There is no real proof for this but there are many inferences from observations of behaviour. Physical Sciences – Proximal Determinants of Behaviour • How much do you eat? • How do you predict a grade point average? • What do you have to know to predict whether a person will go eat? o Hunger level o How good of a friend they are/nature of relationship o How good the food is/food quality o Activity in progress/alternatives (what he is already doing)/Prior plans o Cost/Who is paying? • First separate the determinants of behaviour and then calculate their influence mathematically. o Motivation = hunger x incentive –(cost + other plans) o Motivation = a x b – (c + d) Experiment Spinach vs. Ice Cream • Children are expected to run 3 miles an hour for spinach if they have not eaten for 3 hours. • Children are expected to run 10 miles an hour for spinach if they have not eaten for 9 hours. • Children are expected to run 13 miles an hour for ice cream if they have not eaten for 3 hours. • Children are expe
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