CH 8-10: Altruism, Aggression, Attraction and Intimacy Flashcards
Altruism v Geniuine Altruism
Altruism- a motivational state with the goal of increasing another’s welfare
- Helping someone with a cost to yourself; the greater the cost, the greater the altruistic act
- Altruism can be thought of helping someone even when there is a benefit to oneself (just any prosocial behaviour)
Genuine altruism- increasing another’s welfare when there is zero benefit to the self –> debate of whether or not it actually exists
- Genuine altruism depends on the intentions of the actor (but you can never really know bc social desirability)
All Theories of Altruism (TB and LEC)
- Social Exchange Theory (internal (includes mood) and external rewards)
- Social Norms (reciprocity norm, social responsibility norm)
- Kin selection (LEC)
- Signalling (LEC)
- Reciprocity (LEC)
- Group Selection
- Mood –> Social exchange theory (LEC)
Self-Focused Theories of altruism (LEC) (4)
- kin selection
- reciprocity
- signalling
- mood
Social Exchange Theory of Altruism:
- The theory that human interactions are transactions that aim to maximize one’s rewards and minimize one’s costs; we don’t consciously monitor costs and rewards, but such considerations can predict out behaviour
- *Rewards:**
- Rewards that motivate helping may be external (boost image, or hoping to receive appreciation) or internal (makes us feel good about ourselves)
- Since ‘we give what we get’ we are more eager to help someone attractive to us, someone whose approval we desire
- Public generosity boosts one’s status, while selfish behaviour can lead to punishment
Social Exchange Theory of Altruism: Internal Rewards
- we are most aroused in response to others distress which motivates us to help the person
- *Guilt (feel-bad-do-good):**
- Our eagerness to do good after doing bad reflects (expunge guilt) both our need to reduce private guilt and restore our shaken self-image and our desire to reclaim a positive public image
- We are more likely to redeem ourselves with helpful behaviour when other people know about our misdeeds
- By motivating people to confess, apologize, help, and avoid repeated harm, it boosts sensitivity and sustains close relationships
- Inner rewards of prosocial behaviours can offset other negative moods as well
- exceptions to this include anger, and states that results in preoccupation like depression and grief
- *Mood (feel-good-do-good)**
- helpful when both sad and happy bc helping softens a bad mood and sustains a good mood
- positive mood = positive thoughts and self-esteem = positive behaviour
- Helping feels good and not helping feels bad –> feeling of shame when you could’ve easily helped
- Warm glow- helping makes you feel good, moral high ground
- Negative state relief- if you feel bad, you want to feel good, so you relieve bad feelings by helping
- Positive state maintenance- if you feel good, you want to maintain it, so you help
Social Norms of Altruism (2)
- often we help others not bc its in our self-interest but bc its something we ought to do
- there are two norms that motivate prosocial behaviours: reciprocity norm and social-responsibility norm
Social Norms: The Reciprocity Norm
- An expectation that people will help, not harm those who have helped them
- Reciprocity within social networks helps define the social capital- supportive connections, information flow, trust, and cooperative actions- that keeps a community healthy
- The norm operates most effectively as people respond publicly to the deeds earlier done to them –> fleeting one-shot encounters produce greater selfishness than sustained relationships
- When people can’t reciprocate, they may feel threatened and demeaned by accepting aid, so proud, high self-esteem-people are often reluctant to seek help –> receiving unsolicited help can take one’s self-esteem down a notch
- Asians, for whom social ties and the reciprocity norm are stronger than for NA, are more likely to refuse a gift from a casual acquaintance to avoid the felt need to reciprocate
Social Norms: The Social-Responsibility Norm
- The belief that people should help those who need help, without regard to future exchanges; people will help those dependent on them
- This is more obvious in collectivist cultures, but in Western cultures, they often still help needy people –> however, they usually apply this norm selectively to those whose needs appear not to be due to their own negligence (so not to homeless ppl)
- The norm seems to be: give people what they deserve; if they seem to have created their own problems, then the norm suggests that they don’t deserve help
- Responses are closely tied to attributions; if we attribute the need to an uncontrollable predicament, we help, but if we attribute the need to the person’s choices = no help
- *Gender and receiving help:**
- Women if perceived as less competent and more dependent will receive more help than men (in accordance with the social-responsibility norm)
- Males might also be motivated by something other than altruism; mating motives increase men’s spending on conspicuous luxuries, displays of heroism, and men more frequently help attractive than unattractive women
- Women are also more likely to seek help; they are twice as likely to seek medical and psychiatric help and more often welcome help from friends
Evolutionary Psychology Theories of Altruism (4)
- Evolutionary psychology contends that the essence of life is gene survival; our genes drive us in ways that have maximized their change of survival
- Genes that predispose individuals to self-sacrifice in the interests of strangers’ welfare would not survive in the evolutionary competition
- kin selection
- signalling
- reciprocity
- group selection
Evolutionary Psychology: Kin Selection
- Evolution has selected altruism towards one’s close relatives to enhance the survival of mutually shared genes
- We show favouritism towards those who share are genes and are more likely to help those who are more related to us
- Compared with neglectful parents, parents who put their children’s welfare ahead of their own are more likely to pass on their genes (increases their future reprodutive success)
- Likelihood of helping goes down as relatedness goes down, and the difference becomes even more pronounced in life-or-death situations
- Parents more devoted to children than vice versa bc children have less at stake in the survival of their parent’s genes
- We feel more empathy for a distressed or tortured person in our in-group and even schadenfreude (secret pleasure at their misfortune) for rivals or out-group members
Evolutionary Psychology: Signalling
- Public behaviours are signals to others of our reproductive and physical fitness, resources, and status
- These are hard to display, so our public behaviours are ways to “show off” taboo things (like being wealthy)
- Signals are often costly which provides further evidence of fitness –> the costlier the signal, the stronger the evidence of fitness/resources (donating $5 v $5 mill)
- Pronking in Springbok is a costly signal to show off strength and fitness –> only the young and fit males do it
- Many signals are costly (like peacock tail, or risk-taking behaviours) but show if you can survive w those costs, you are in good fitness
- Donating large sums of money or wearing name brand clothing is a costly signal, but it has a reputational benefit
- *Signalling and doorholding (Hauser et al., 2014)**
- Wanted to see if people help others who signal they are higher in emotional resources (good mood is a proxy of how things are going for you and what your resources are)
- Confederates displayed emotional signal and followed people into a building
- IV: emotional signal (happy, sad, neutral –> based on w pretend phone call)
- DV: the extent to which the P held the door open for the confederate
- The result was that people helped more when a good mood was signalled
Evolutionary Psychology: Reciprocity
- Reciprocity works best in small, isolated groups, groups in which one will often see the people for whom one does favours
- Reciprocity and small favours are more likely to occur in small town or rural environments compared to big cities
- Direct reciprocity: you scratch my back, I’ll scratch yours (quid pro quo)
- Indirect reciprocity: I’ll scratch your back, you scratch someone’s, and someone will scratch mine (what goes around comes around) –> focused on helping someone to improve your reputation (if you are known to be helpful ppl will be more likely to help you later on)
- *Prisoner’s Dilemma:**
- The basic/rational decision is to rat the other person out (to defect), never cooperate/help out
- When money is on the line however (not jail), most people cooperate = because of the norm of reciprocity (people act as if there will be an opportunity for reciprocity) –> as if experimenter will reward participants or others will see altruistic behaviour
- When participants play repeatedly, reciprocity rules –> doesn’t really go along w altruism but is consistent with reciprocity
- When partners start cooperating, they continue, once someone defects, the relationship is broken
- Keeping your reputation is high will increase your chances of survival (works to our benefit)
- no matter what the other prisoner decides, each is better off confessing than being convicted individually
- If also the other confesses, the sentence is moderate rather than severe
- On any given decision, a person is better off defecting (bc such behaviour exploits the other’s cooperation or protects against the other’s exploitation
- both parties realize they could mutually benefit, but unable to communicate and mistrusting they end up no cooperating
- Punishing another’s lack of cooperation might seem like a smart strategy, but can be counterproductive as it typically triggers retaliation, which means that those who punish tend to escalate conflict, worsening their outcomes, while ncie guys finish first
- What punishers see as a defensive reaction, recipients see as an aggressive escalation, and they might hit harder when hitting back (tit-for-tat)
Evolutionary Psychology: Group Selection
- Why do we help strangers? When groups are in competition, groups of mutually supportive altruists outlast groups of non-altruists (back-scratching groups survive)
- This is most evident in social insects that function like cells in a body, such as bees and ants
- Humans exhibit in-group loyalty by sometimes sacrificing to support “us” against “them” –> natural selection is multi-level, and operates at both individual and group levels
- Effects can be mitigated: contact between different racial groups reduces expressions of racism, and may increase helping
Overview of Theories of Altruism
- Each of the three theories proposes two types of prosocial behaviour: a tit-for-tat reciprocal exchange, and a more conditional helpfulness
- Each theory appeals to logic, yet each is vulnerable to charges of being speculative after the fact
Genuine Altruism
- We can all be skeptical of some acts of helping, and helpfulness reliably makes helpers feel better
- Batson theorized that our willingness to help is influenced by both self-serving and selfless considerations
- Distress over someone’s suffering motivates us to relieve our upset feelings, either by escaping the distressing situation, or by helping
- Other-focused altruism- help others to increase their welfare, even when benefit to self is not apparent or even considered
- Empathic concern- other-oriented emotion (warmth, tenderness, compassion, sympathy) that drives us to reduce another person’s distress even when there is no benefit to oneself or when cost outweighs benefit (core of other-focused altruism)
- We feel more empathy to those we are attached to or those we identify with, and more empathy for a single person than a suffering aggregate (collapse of compassion –> occurs as people regulate their painful emotional responses to large tragedies)
- genuine sympathy and compassion motivate us to help others for their own sake
- In humans, empathy comes naturally (even in babies)
- Often distress, and empathy together motivate responses to a crisis –> when empathy is aroused, people help more than they escape the situation (to reduce their own distress)
- If we feel empathy but know that something else will make us feel better, we aren’t as likely to help
Egotism v Altruism (Toi & Batson, 1982)
- Participants were told they were evaluating ‘pilot program’ for the university radio station
- Each students hears a tape about Carol Mercy (a struggling student in a wheelchair)
- 50% of Ps told to be objective as they listen
- 50% of Ps told to adopt that target’s perspective
- *IVs:**
- Empathy: objective or target’s perspective
- Guilt: same Psyc 100 section or not (guilt bc they will have to see her in class)
- *DV:** agreement to help –> does empathy make ppl agree to help Carol?
- The empathy condition should result in help regardless of guilt, but the objective condition should only result in help when there’s guilt (according to Batson’s theory)
- In the high empathy condition, helping was high regardless of guilt, but in the low empathy condition, helping was much higher when the guilt condition was present
Five-Stage Model of Bystander Apathy
- Noticing
- Interpreting
- Assuming Responsibility
- Decide how to/if you can help
- help
- it is only at the last stage that we help
- each stage is like an obstacle that people need to get past before they will help
Five-Stage Model of Bystander Apathy: Noticing
- It is bad manners to stare at others, so we aren’t constantly noticing everything
- In an experiment, solitary students, who often glanced idly about the room while working noticed smoke almost immediately while those in groups kept their eyes on the work and it took them longer to notice the smoke
Five-Stage Model of Bystander Apathy: Interpreting
- interpreting the event as one requiring intervention
- Seeing smoke, you don’t want to embarrass yourself by being flustered, and seeing other people looking calm and indifferent will induce us to act in a similar manner (informational influence)
- Such misinterpretations can contribute to delayed responses and feed the illusion of transparency and result in pluralistic ignorance
- A groups passivity can affect members’ interpretations of a situation (thinking it is less severe than it was when looking at others lack of response = no action)
- The bystander effect is reduced in obviously dangerous situations as they are easy to interpret and people are more likely to help
- Pluralistic ignorance - a situation where a majority of group members privately reject a norm, but assume (incorrectly) that most others accept it –> a result of informational influence and conformity
- *The Good Samaritan Study:**
- Participants were students at the Princeton Theological Seminary
- Told that they would be giving a talk about the parable of the Good Samaritan OR job opportunities
- When they arrived at the lab, told that the talk would be in another building, and given time manipulation (late, on time, ahead of schedule)
- On the way to the building, they passed a confederate slumped in a doorway, moaning in pain
- DV – do participants (seminary students) help?
- Results:*
- When time pressure is low, majority will stop to help, especially when the good Samaritan talk is on their mind
- Time pressure really affects helping, as they don’t notice –> doesnt matter if it was the good Samaritan or other topic
- People’s interpretations also affect their reactions to street crimes –> get off of me idk you vs get off of me idk why I married you
Five-Stage Model of Bystander Apathy: Assuming Responsibility
- As the number of people known to be aware of an emergency increases, any given person is less likely to help –> there is no safety in numbers for the victim even in dangerous situations
- In dangerous situations where a perpetrator is present and intervention requires physical risk, the bystander effect is less evident
- People who don’t respond are not apathetic or indifferent, but people deny the influence that the presence of others has on them
- When emergencies are very clear, those in groups are only slightly less likely to help those alone, but when emergencies were somewhat ambiguous, those in groups were far less likely to help than solitary bystanders
- Most people who live in large cities are seldom alone in public places, which helps account for why city people are often less helpful than country people –> compassion fatigue and sensory overload from encountering so many people in need, further restrains helping in large cities
- In large cities, bystanders are also more often strangers, whereas when bystanders are friends or people who share a group identity, increased numbers may also increase helping
- People in economically advanced countries tend to offer less help to strangers, and those in cultures marked by amiable and agreeable sympathy were more helpful
- Diffusion of responsibility - tendency for each group member to dilute personal responsibility for acting by spreading it among all other group members
- *Smoke Filled Room study:**
- Participants are completing a survey when smoke begins to pour into the room
- Alone v with 2 confederates
- DV: do Ps go get the experimenter?
- Diffusion of responsibility bc you can blame the outcome on others (I didn’t do anything, but neither did anyone else
- A little bit of pluralistic ignorance, but mostly diffusion of responsibility
Five-Stage Model of Bystander Apathy: Decide how to/ if you can Help
- People can help in different ways, and whether or not they help depends on the type of help they can offer (relevant expertise)
- Two types of Ps: Students v nurses
- Maintenance person falls off a ladder
- DV: Do Ps approach and try to help?
- Results:*
- Nurses approach 90% of the time (they know how to help so they do so)
- Students approach 50% of the time
- But, students more likely to go get experimenter (don’t know how to help so they find someone that does)
When do we help? (3)
- *Helping When Someone Else Does:**
- Prosocial models promote prosocial behaviours
- Models sometimes contradict in practice what they preach (“do as I say not as I do”)
- Children learn moral judgments from both what they hear preached and what they see practiced –> when exposed to these discrepancies they imitate: they say what the model says and do what the model does
- *Time Pressures:**
- A person not in a hurry may stop and offer help to a person in distress while a person in a hurry is likely to keep going
- Those in a rush are not necessarily more callous but, in a hurry, they don’t fully grasp situations and don’t notice others in distress –> behavior more influenced by context than by conviction
- *Similarity to the Victim:**
- Because similarity is conducive to liking, and liking is conducive to helping, we are more empathetic and helpful towards those similar to us
- This similarity bias applies both to how people dress and their beliefs
- More likely to trust and be generous to those who have similar features, shared b-day, name (in me I trust)
Who Helps: Personality Traits and Gender
- *Personality Traits:**
- Modest relationships were found between helping and certain personality variables such as the need for social approval
- By large personality traits are unable to identify helpers although social contacts clearly influences willingness to help
- Attitude and trait measures seldom predict a specific act, which is what most experiments measure, in contrast to lifelong altruism of people like Mother Teresa
- Personality researchers have found individual differences and helplessness, and that these differences persist overtime and are noticed by a person’s peers –> some people are reliably more helpful
- those high in emotionality, empathy, and self-efficacy are most likely to be concerned and helpful
- Personality influences how particular people react to particular situations; those high in self-monitoring are attuned to the expectations of others and are especially helpful if they think helpfulness will be socially rewarded (others’ opinions matter less to internally guided low self-monitoring people)
- *Gender:**
- When faced with potentially dangerous situations in which strangers need help, men more often help
- It seems that gender norms (“women and children first”), more likely come into play in situations when people have time to reflect on social norms as opposed to acting instinctively on impulse (fast sinking v slow sinking ship)
- In situations such as volunteering to help an experiment or spending time with children with disabilities, women are slightly more likely to help
- Women have also been as likely or more than men to risk death, and when faced with a friend’s problem, women respond with greater empathy and spend more time helping
Increasing Helping: Personal Appeal and Guilt
- one way to promote prosocial behaviour is to reduce those factors that inhibit it
- assisting people to interpret an incident correctly and assume responsibility should increase a persons involvement
- face-to-face comments boost reporting of a crime
- *Personal Appeal:**
- Personalized nonverbal appeals can also be effective as a personal approach makes people feel less anonymous, and more responsible
- Bystanders who identified themselves to one another (by age, name, etc.) are more likely to aid a sick person than were anonymous bystanders
- Helpfulness also increases when one expects to meet the victim and other witnesses again
- Anything that personalizes bystanders- a personal request, eye contact, stating one’s name, anticipation of interaction- increases willingness to help
- Personal treatment makes bystanders more self-aware, and, therefore, more attuned to their own altruistic ideals; circumstances that promote self-awareness (being watched, name tags) should also increase helping
- *Guilt and Concern for self image:**
- Awakening people’s guilt increases their desire to help
- Guilt-laden people are more helpful people
Increasing Help: Teaching Moral Inclusion
- Moral inclusion refers to regarding others as within your moral concern; they include people who differ from themselves within the human circle to which their moral values and rules of justice apply
- Moral exclusion or omitting certain people from one’s circle of moral support justifies all sorts of harm and allows exploitation or cruelty to become acceptable and even appropriate towards those we regard as undeserving, or nonpersons
- Moral exclusion describes any of us who concentrate on our concerns, favours, and financial inheritance on “our people” to the exclusion of others
- We easily become number by impersonal big numbers of out-group fatalities –> hurricane that killed 50, 5000, 1000 had the same effect
- A first step toward socializing prosocial behaviour is to counter the natural in-group bias favouring kin and tribe by broadening the range of people whose well-being concerns us
- If everyone is part of our family, then everyone has a moral claim on us and the boundaries between “us” and “them” fade
- Inviting advantaged people to put themselves in others’ shoes, to imagine less advantaged people feel, also helps –> to ‘do onto other as others do onto you’ you need to take the other’s perspective
Increasing Help: Modelling Prosocial Behaviour
- People reared by extremely punitive parents, chronic criminals, and many delinquents show must less empathy and principled caring that typify altruist
- If we see or read about someone helping, we are more likely to offer assistance
- Exceptional altruists have warm and close relationships with at least one parent who was a strong moralist or committed to humanitarian causes
- This prosocial value orientation led them to include people from other groups in their circle of moral concern and to feel responsible for others’ welfare
- Prosocial TV models have had greater effects than antisocial models
- Studies have also shown positive effects on attitudes or behavior from playing pro social video games and listening to pro social music
Increasing Help: Learning by Doing
- Just as immoral behavior fuels and moral attitudes, helping increases future helping
- Children and adults learn by doing –> when children act helpfully, they develop health related values, beliefs, and skills
- Helping also contributes to satisfying their needs for a positive self-concept
- Community service and volunteer programs woven into a school curriculum have been shown to increase later citizen involvement, social responsibility, cooperation, and leadership
- Since attitudes follow behavior helpful actions promote the self-perception that one is caring and helpful, which in turn promotes further helping
Increasing Help: Attributing Helpful Behaviour to Altruistic Motives
- Another clue to socializing pro social behavior comes from the over justification effect –> rewarding people for what they do anyway undermines intrinsic motivation
- Stating the principle positively: by providing people with just enough justification to prompt a good deed, we may increase their pleasure and doing such deeds on their own
- Rewards undermine intrinsic motivation when they function as controlling bribes, but an unanticipated compliment can make people feel competent and worthy –> people are therefore more likely to attribute things to altruism
- To predispose more people to help in situations where most don’t, it can also pay to induce a tentative positive commitment, from which people may infer their own helpfulness
Increasing Help: Learning about Prosocial Behaviour
- Once people understand why the presence of bystanders inhibits helping, they become more likely to help in group situations
- Those who heard a lecture on bystander inaction were more likely to help someone in need at a later time
What is Aggression
- Aggression is physical or verbal behaviour intended to cause harm –> excludes unintentional harm (car accident), any actions that may involve pain as an unavoidable side effect of helping someone (dental treatments, assisted suicide)
- Includes both physical aggression (hurting someone’s body), and social aggression (bullying, cyberbullying, insults, harmful gossip, or social exclusion that hurts feelings)
- Social psychology definition of aggression does not include microaggression (words or actions that unintentionally convey prejudice toward marginalized groups) as aggression must be intentional
Types of Aggression (3)
- Hostile aggression-hurting someone because we are angry, and aims to injure
- Instrumental aggression- aims to injure, but is committed to the pursuit of another goal –> both can be physical or social
- E.g., bullying for being a homewrecker (hostile), or bullying to gain popularity (instrumental)
- Mugging is instrumental bc they are not angry at the other person they just want their stuff (not a means of taking their anger out)
- Relational aggression- aggression that harms someone else through the manipulation of friendships
- Deliberate act of sabotaging someone else’s relationship
- Harming someone’s ability to be socially included → causes harm be ostracism can be detrimental
- Subtype of the other 2 (can be hostile or instrumental)
- Most terrorism is instrumental aggression, as are most wars
- Adolescents who bully others are often engaged in instrumental aggression because they frequently seek to demonstrate their dominance and high status –> being mean and disliked can sometimes make you popular and revered
- Most murders are hostile –> half erupt from arguments, and others result from romantic triangles or brawls that involve the influence of alcohol and drugs
Challenges to Studying Aggression
- Hard to study aggression in a lab due to ethical considerations (the anger needs to be taken out on other ppl such as on other participants
- Non-experimental (correlational studies) are more common
- Reverse causality is an issue –> ex. Whether more aggressive kids watch violent TV, or violent TV causes aggression
- Third variables –> something else causes violent behaviour and watching violent TV like neglectful parents
- Correlational studies will usually have reverse causality and will almost always have third variables (that are plausible, but can often be argued against)
Studying Aggression in the Lab (The Ultimatum Game)
- *Self-report and scenario completion:**
- Insult half of the participants and then ask if it were real, how aggressively they would react
- Issues with self-presentation bias, and there is no way to know if they would actually act the way they say they would
- *Shocks, noise blasts, hot sauce, demanding yoga poses**
- Measures of aggression after confederate insulted you could be how many volts, how many decibels, how much hot sauce, and how long they require the person to hold a yoga pose
- Inferences about the confederate (they think the confederate likes yoga) causes issues
- Both internal (inferences) and external (whether how much hot sauce given actually translates to aggression IRL) validity issues
- *The Ultimatum Game (costly punishment):**
- Subject B is the participant (the decider)
- Rationally, the decider should be happy with whatever amount, bc any money is better than no money, but people would rather ‘spend’ $5 to harm the splitter and stick it to them (costly punishment)
- The price point at which the decider would stop accepting the money corresponds with the punishment
- Costly punishment: I want to harm this person, and I would spend x amount of money to achieve this
- The more money they ‘spend’, the more aggression —> someone who accepts $10 is less aggressive than someone who only accepts as low as $40 before rejecting
Nature v Nurture Theories of Aggression (5) (LEC)
- *Nature:** evolutionary instincts, genes, testerone
- *Nurture:** Social learning theory, culture of honour
All Aggression Theories
- Biological Theories of Aggression
- Evolutionary instinct
- Neural influences
- Genetic influences
- Biochemical influences (alcohol, testosterone, poor diet)
- Frustration-Aggression Theory
- Relative Deprivation
- Social Theories
- Social rewards of aggression
- Observational Learning
- Culture of Honour
Biological Theory of Aggression: Instinct Theory and Evolutionary Psychology
- Freud speculated that human aggression springs from a self-destructive impulse and it redirects towards others the energy of a primitive death urge
- Lorenz saw aggression as adaptive rather than self-destructive
- The two agreed that aggressive energy involves instinctive behavior (innate), and if not discharged it can build up until it explodes or until an appropriate stimulus releases it
- the idea that aggression is instinctive fails to account for the variations in aggressiveness from person to person and culture to culture
- Aggression is sometimes rooted in basic evolutionary impulses –> throughout human history men especially have found aggression adaptive and purposeful aggression improved the odds of survival and reproduction
- Mating related aggression often occurs when male are competing with other males
- Aggression provides evolutionary fitness: use aggression to get resources
- There is a selfish gene theory of the relationship between genetic relatedness and aggression –> men are much more likely to harm stepchildren than genetic children
- And may also become more aggressive when their social status is challenged –> status based aggression helps explain why aggression is highest during adolescence and early childhood when the competition for status and mates is more intense
Biological Theory of Aggression: Neural Influences
- When scientist activate brain areas that have been found to facilitate aggression, such as the hypothalamus, hostility increases, but when deactivated hostility decreases
- Brain scan studies found that in the prefrontal cortex, which acts as an emergency brake on deeper brain areas involved in aggressive behavior, was 14% less active than normal and murderers and 15% smaller in antisocial men
- Another study found that more aggressive and violent men had smaller amygdala
- Other studies have confirmed that abnormal brains can contribute to abnormally aggressive behavior
- Situational factors can also play a role: sleep deprivation reduces activity in the prefrontal cortex which is an area responsible for self-control, so in aggression prone individuals poor sleep can lead to violent and aggressive behaviour
- People with mental illnesses are more likely to be victims of violence than the perpetrators
Biological Theory of Aggression: Genetic Influences
- Heredity influences the neural system’s sensitivity to aggressive cues
- Aggressiveness also varies among individuals; our temperaments-how intense and reactive we are-are partly brought with us into the world, influenced by our sympathetic nervous system’s reactivity –> a person’s temperament observed during infancy is likely to endure
- There’s a correlation between violent crimes and genetics –> identical twins and genetic siblings more likely to both be convicted of crimes
- A specific gene (MAOA-L) has been linked to aggression (warrior or violence gene) –> has been found that those with the genes were 13 times more likely to have repeatedly committed violent crimes, explaining up to 10% of severe violent crime in the country (finland)
- Studies have also found that aggressive behavior combines the MAOA-L gene with childhood maltreatment
- Neither by genes nor about environment alone predisposed later aggressive and antisocial behavior; rather genes predispose some children to be more sensitive and responsive to maltreatment
Biological Theory of Aggression: Biochemical Influences: Alcohol
- Alcohol enhances aggressiveness by reducing people’s self-awareness, by focusing their attention on provocation, and by people’s mentally associating alcohol with aggression
- Alcohol also predisposes people to interpret ambiguous acts as provocations, it deindividuates and disinhibits
- Alcohol reduces anxiety and reduces inhibitions against aggression
- Fear & anxiety is what prevents us from acting out aggressively, and why we don’t act impulsively
- Aggression & esp hostile aggression is an impulsive behaviour (don’t fear consequences)
- Interferes with information processing that would override aggressive impulses
- Forget to think about the future
- Alcohol = system 2 inhibitor (not thinking deeply about the consequences)
- *“Alcohol myopia”**
- Reduces self-awareness and enhances de-individuation –> less of sense that people are watching you, and feel more like you are part of a crowd
- *How does alcohol impact emotions?**
- Enhance negative emotions like sadness (esp. w relationship hardships)
- Alcohol can magnify relationship conflict and make them more dramatic than they are
- Ppl were asked to recall an argument in their relationship before and after drinking either alcohol, a placebo, or a control
- They then asked after drinking how both they felt and how they thought their partner felt about the argument
- Expressed heightened levels of negative emotions for themselves and partner when drunk → event recalled before they were drunk, but being intoxicated make/ ppl perceive the event to be worse than it is
Biological Theory of Aggression: Biochemical Influences: Testosterone
- Hormonal influences appear to be much stronger in lower animals than in humans, but human aggressiveness does correlate with testosterone
- Drugs that diminish testosterone levels in violent human males will subdue their aggressive tendencies and after people reach the age of 25, their testosterone and violent crime rates decrease together
- Those with high testosterone levels are more prone to delinquency, hard drug use, and aggressive responses to provocation
- People with brain structures indicative of greater testosterone exposure were more aggressive from childhood to adulthood
Biological Theory of Aggression: Biochemical Influences: Poor Diet
- Prisoners who got extra nutrition were involved in 35% fewer violent incidents
- Many people have diets deficient in important nutrients such as omega-3 fatty acids (important for brain function) and calcium (guards against impulsivity)
- Those who drank more than five cans of non-diet soda a week or more likely to have been violent and carried a weapon
- Women and men who consumed more trans-fat were more aggressive even after adjusting for third factors
- To lower aggression, eat a diet high in omega-3 fatty acids, low in trans fats, and without sweetened drinks
Biological Theory of Aggression: Biology and Behaviour Interact
- Traffic flows both ways: higher levels of distortion may cause dominant and aggressive behavior, but dominant and aggressive behavior also leads to higher testosterone levels
- Testosterone surges post celebration so it was found that the fans of winning rather than losing teams commit more postgame assaults
- Neural, genetic, and biochemical influences predispose some individuals to react aggressively to conflict and provocation, but there are ways to reduce human aggression