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Lecture 10

Social Psych - lecture 10

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School
University of Toronto Scarborough
Department
Psychology
Course
PSYB10H3
Professor
E- Page Gould
Semester
Fall

Description
Aggression and pro-social behaviour Aggression - Intentional behaviour aimed at casing physical or psychological pain - Two dimension of classification - type of pain: - goal of pain: goal of inflicting pain - Physical aggression - aggression inflicting physical pain - Verbal or relational aggression - saying or doing psychologically hurtful things - GOAL: we make distinction b/w hostile and instrumental aggression - hostile aggression: aggressive behaviour that stems from feelings of anger, has goal of inflicting pain - instrumental aggression: aggressive behaviour that inflicts pain, the pain is a middle step toward another goal - Is goal is simply to hurt the person, then it is hostile aggression (just meant to be hurtful) - Instrumental: hurting someone but you do not want to hurt them (do not care if you do but you do not want to) - goal is something other than inflicting pain on someone - Aggressive behaviour that inflicts pain, pain is middle step toward another goal Approaches to aggression - genetic predisposition: I was born that way - some people may be more genetically predisposed than other - basic theoretical premise: aggression is adaptive and has survival value - they fight and compete for mates, social status and one needs to be more aggressive to get the resources they need for family - earliest evidence: animals can be bred for aggression (Rottweilers - show more traits of aggression than other dogs) - twin studies find high heritability for aggression neural structure: - amygdale: stimulating amygdale can lead to aggression (stimulating the amygdale this will increase aggression, but also depends on context) - depends on context: sometime leads to withdrawal/fear, relative social status matters (the higher they are in social status the more aggressive they become and less social status rats showed more fear) - prefrontal cortex: PFC may be regulator of aggressive impulses - generally involved in planning and behavioural regulation - you can regulate how aggressive you may get in certain situations - relation of PFC and aggression - murderers have less PFC activity than normal control - PFC become activated when contemplating and aggressive act hormones and neurotransmitters: - testosterone - steroid hormone may increase aggression - smaller 2D:1D ratios correlated with greater exposure to androgens (prenatal testosterone) in the womb (affects behaviours when you are older ) - smaller ratios correlated with aggression - BUT: injecting testosterone does no increase aggression, testosterone-aggression has small effect size, r=.14 - serotonin - neurotransmitter related to many aspects of experience - may inhibit aggressive impulses - violent criminals have less serotonin than normal - serotonin antagonists (blocker) increase aggression - Chemical influence - alcohol - booze made me do it -alcohol disinhibits behaviour in general (does not make you do something that would never do, just made you do something that you have inhibited) - reduced self-consciousness deindividuation - reduced attention to consequences of actions - relationship b/w alcohol and aggression: - in 65% of homicides and 55% of domestic violence, assailant and or victim has been drinking - in lab studies comparing alcohol with placebo: people give stronger shocks (Milgram study), report more anger when thinking about conflict with romantic partner - Frustration aggression theory - has a bad day - aggression stems from frustration (by Freud) - frustration: perception that you have been prevented from attaining a goal - more aggressive when: - stopped when you are close to goal - frustration is unexpected, intentional or unjustified - cannot retaliate against cause of frustration (you have two goals that you cannot get at, your original goal and the goal of getting payback have been stopped) - critiques: not all aggression is result of frustration - environmental factors - pain (rats attack each other after being shocked, participants blast each other with louder noise after hand submerged in ice water vs room temp water - heat (heat above 32 invokes aggression) - neo-associationism - aversive events: cause anger, concepts associated with anger become more accessible, anger related concepts already n working memory especially facilitated - aggressive stimuli triggers aggressive behaviour (object associated with aggression - study for aggressive stimuli - method: (1)participant and confederate on problem solving task involving shocks (2) anger manipulated by shocks from confederate (decreased anger = 1 shock, increase anger = 7 shocks (3) next, P can shock C (4) beside the shock machine was either: nothing, gun or badminton racket - results: more shocks administered when a gun was near and showed higher anger - Social learning theory - everyone else did it so I did it - vicarious learning: (Albert Bandura), learning solely through observation of other people's reinforced and punished behaviour - no direct reinforcement or punishment (social modelling) - social modelling - we learn aggression from observing others and imitating them - adoption of modelled behaviours are dependent on rewards and punishments observed - Bandura's bobo doll experiment - implications: family influence - physically aggressive children more likely to have physically punitive parents - 30% of physically abused kids abuse their own kids - media influence: high publicized studies increased suicides - Television and aggression - by 7th grade, average child has seen: 8000 murders, 100,000 other acts of violence - more television predicts aggressiveness - important caveat: mostly correlational studies - over time: Eron and Heusmann, method: (1) recruited 200 8 year old from NYC (2) measured general aggressiveness at age 8 (3) documented how much violent TV they watched - results: violent tv watching at age 8 predicted aggression at age 19, criminal acts of violence (rape, robberies, assault) at age 30, controlled for aggression at age 8 Moderating factors in TV-aggression link - Model similarity - Punishment vs reward - Apparent reality - cartoons influence aggression less than film - Apparent consequences - modelling more likely when pain/harm caused by violence is not depicted How does TV affect aggression? - Imparts information about how to aggress - Primes anger - Make world seem more dangerous, increases fear of victimization - heavy viewers tend to overestimate frequency of violent crime, probability of being assaulted - Loosens inhibitions toward violence - desensitizes up to violence PRO-SOCIAL BEHAVIOUR Cooperative dilemmas - Situations where the most beneficial action for an individual will be harmful for the collective group Escalation of conflict - Interpersonal conflict feeds itself and escalates if one side does not being concession - Stimulus: partner A comes home and snaps at partner B - partner B response: - an equally harmful remark: partner b is vindicated, but partner A feels compelled to respond with an equally vehement remark - conflict escalates - defusing remark: partner takes a hit in pride, but partner A has no reason to say another hurtful remark - conflict defuses - Stimulus: country A accidentally bombs civilian area of country B during a training exercise - country B response: - bomb them back: country B is vindicated, but they are now at war with country A - accept apology: country B takes a hit in many ways but they maintain peaceful relations with country A Tragedy of the commons - Cooperative dilemma that occurs in situations where everyone has access to common pools of goods that will replenish itself it used in moderation but disappear if overused - People reliably tend to make more than their fair share - Why do we take more: -anchoring and adjustment heuristic: desired share is used as an anchor (you know how much you want from the shares but you do not sufficiently adjust down) - size of commons s not readily estimated (ex. Big family and passing around potatoes, you think about how much will be enough for everyone so you take less so there is enough) - When do we take out fair share - both the size of the commons and the group that is sharing it are easily determined - the size of an equal share is explicitly stated - like splitting a pizza among 4 people with 8 slices The prisoner's dilemma - Situation where two people must make a collectively dependent decision without knowing the other person's decision - Special case of John Nash's Game theory - need to make a decision that is dependent on another person but you do not know what the other person's decision may be - Have prisoner A and B, but do not have enough data to actually convict these people - they separate two people and asked who did it - given a chart about the consequences if they confess or do not confess - depends on if you think your partner will confess of not confess - Sometimes played with how much money you will give your partner but you do not know what they will say - Strategies that maximizes personal outcomes (gain most money) in multi stage prisoner' dilemma: - best strategy: simple tit for tat strategy
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