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McMaster University
Joe Kim

EVOLUTION PSYCH 1XX3 1/21/2013 10:33:00 AM Romatic relationships Are driven by outcome variance  lead to different solutions to same problem KEY ASSUMPTIONS BEHAVIOUR = PSYCHOLOGICAL MECHANISIMS + INPUT EVOLVED PSYCHOLOGICAL MECHANISMS CODED IN THE BRAIN EVOLVED PSYCHOLOGICAL MECHANISMS CAN BE DESCRIBED AS INFORMATIION PROCESSING DEVICES Help to drive key decisions in order to behave in an adaptive fashion 1. genes and family resemblances there is a folklore that people tend to notice similarities and the newborn infant in the father more so than the mother. In reality if people are shown a newborn infant, they don’t necessarily notice real diff between father and mother, 2. differences that may exists in opinions and approaches to romantic relationships what do females look for in a potential partner for romantic relationship? Honesty, humorous, strong, commitment, protector and provider, able to support her/child. What do men look for? Fideility, physical attractiveness, cook food, confidence, sex. Men seem to really value physical qualitirs in a potential romantic partner Whereas women, a lot of things that you hear have to deal with quality of a person and as well as potential resources that person may have access to. ROMANCE IN THE FRIEND ZONE MEN WERE MORE LIKELY TO REPORT TO BEING ATTRACTED TO THEIR FRIEND MEN TENDED TO THINK THAT WOMEN FRIENDS WERE ATTRACTED TO THEM AS WELL. MEN ALSO SAID THEY WOULD DATE THEIR LADY FRIENDS. DIFFERENT ADAPTIVE PROBLEMS metabolic demands of reproduction  huge metabolic cost with respect to females compared to males parental investment  may have been different for men and women, women have gestational period whereas for the male its much easier for the male to not be involved in parental investment. Genetic cuckoldry  infant has come out of her, she can be 100% sure that she Is the mother of the infant. Almost like a conditioned response for the family of the mother to tell the father how much the father looks like the child. Low variance  not many outcomes High variance  many outcomes RISK TAKING BEHAVIOUR people murder others for material goods  many homicides  two people may have known each other but at some point there is a challenge to one of the other persons social status or a rivalry between a woman. people who are more likely to commit homicides/lethal competition are people who have very little to lose.  homeless, bottom of economic spectrum, no real prospects of moving up, most to gain in gaining in lethal competition, single, not very social, evolutionary  not much opportunity to lead descendants , limited access to those kinds of resources (money). unemployed and male, more likely and spikes at early 20s age. Less access to resources, which is something a potential female partner may be looking for, and you don’t have that.. behaviours that lead to homicide. the greater income inequality, the greater the increase in homicide rates. If less income inequality, the overall homicide rate is much lower than others. NEUROSCIENCE 1 AND 2 1/21/2013 10:33:00 AM CASE STUDIES THAT DEMONSTRATE THE COMPLEXITY OF THE BRAIN: Provide natural experiments if an accident happened to someone’s brain, we can observe certain behaviors and may reveal underlying mechanisms and what’s happening in the healthy and unhealthy brain. People that you know and have an emotional connection with, suddenly a person believes that they are imposters  Freudian explanation  there is an unconscious attraction to his mother that he has been keeping suppressed and damage to head causes release but incompatible with the way society accepts things and then the disbelief that she is his mother arises. Imposter syndrome : specific to people that he knows well and has emotional attachments to. Part of telling yourself a self narrative and fooling yourself. PARIETAL LOBE: 3D layout of the world, navigate, both sides of the world L AND R SIDE OF THE WORLD. Restricted to parietal lobe: damage  right parietal lobe, results often from stroke, severe tissue damage Left hemisphere control actions on the right side of the world  DAMAGE  ignoring left side of the world. There is some compensation in activity in the right hemisphere as if its making up for the damage done on the left hemisphere. Right hemisphere control actions on the left side of the world. (also right side of the world too)  attention spotlight -> no corresponding compensation here does not pay attention to the left side of the world. Summary Hemispatial neglect Damage to right parietal lobe  inattention to objects in left side of the world Very difficult to overcome, due to actual death of that brain region Need to learn social cues to overcome what might look
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