Agression Flashcards
Clark
Negative correlation between amount of lynchings in Brazil and the number of African-Americans in the community
Power-threat hypothesis
Balock
States that groups that pose a threat to the majority are more likely to be discriminated against and subjected to violent action
Cassidy
During the month long Hindu festival of Mela there is a crowd of 50 million people
Increased acts of generosity and good will
Therefore crowds can promote non-aggressive behaviour
Nelson
Positive correlation between levels of androgens (male sex hormones) and aggressive behaviour
Measured in male and female prisoners
Not measured at time of the aggressive behaviour though
Wagner et al
Followed Nelson
Castrated male mice showed lower levels of aggression
Levels increased when injected with testosterone
Correlational
Pillay
Looked at male and female athletes
Testosterone causes heightened spatial abilities in females
Athletes competing in more aggressive sports had higher levels of testosterone
Basal model of testosterone
Testosterone causes a change in a persons dominance
Reciprocal model of testosterone
Testosterone levels are influenced by a persons dominance
Mazur and Booth
Men with a higher level of testosterone are more likely to divorce
Testosterone increased upon marriage and decreased after divorce (service vets)
Harrison et al
Gave 56 men aged 20-50 testosterone and then played frustrating computer game
Not all reacted with aggressive behaviour
Convergence theory
Group behaviour happens because a group of like minded individuals converge in a specific location
Emergent norm theory
Because there is no norm to follow in a group individuals look to others
Distinctive behaviour is taken on as the ‘norm’ for that group
The genetic factors in aggression
XYY karyotype
XYY karyotype
Male has an extra Y chromosome
Identified by Sandberg
Court-Brown
Sample of 314 patients
Concluded those with XYY best be hospitalised due to increased likelihood of aggression
Influence of infidelity on aggression
Partner cheats
Triggers an emotional state and perceived threat to relationship
Mate retention stratergies
Strategies that focus on keeping your mate
Buss et al
Says that the perceived threat caused by infidelity causes actions to reduce threat
Mate retention - can lead to violent/aggressive acts
Brunk et al
Said aggression caused by infidelity is different between genders
Males - uncertainty of parentage, sexual jealousy
Females - lack of time and resources provided by partner
Cairns
Study of mice and genetic aggression
Selectively bred mice that would become aggressive during middle age only
Theilgaard
Researched personality traits of XYY men, XY men and XXY men
Said only extra height can be attributed to XYY
No consistent link between genotype and levels of aggression