Development of crime part 1 Flashcards
Definition of aggression
“Aggression refers to behaviours that are intended to and do harm another person”
General types of aggression
- Function
- Form
- Involvement
Function aggression
Proactive/Instrumental – towards a specific goal, calculated
Reactive/hostile – response to threat, attack or frustration, impulsive
Form aggression
Physical – physical damage or discomfort
Verbal – using words to inflict harm/pain
Relational – social exclusion, damaging social position or relationships
Involvement aggression
Direct - direct attack in person
Indirect – can be damage to a property, via another person, damaging social position – the perpetrator is unknown
Developmental changes in aggression
- Infancy - purely proactive physical aggression
- 2-6 yo- Still proactive aggression. Increase in verbal. Early starts of relational.
- 6-10 y.o- More sophisticated relational, decrease in proactive, increase in reactive.
- Adolescents - Relational cont. Increasement in violent aggression. Angry kids meet angry peers
Gender differences in developmental changes in aggression
- Infancy: Few gender differences in aggression.
- 2-6 y.o. boys are more physically aggressive
- 6-10 y.o boys use both physical and relational aggression and girls more relational aggression
- Adolescents- rates of violent behaviour are higher for boys than girls
Stability of aggression Study by Piquero et al., 2012
The review closes with an original empirical analysis using longitudinal data from the Cambridge Study in Delinquent Development linking teacher-rated aggression in childhood/adolescence to official conviction records in mid-adulthood.
=> The findings suggest a strong degree of continuity in aggression/antisocial behaviour among the most aggressive youths/chronic offenders.
Stability of aggression
General stability over time and gender but the findings can vary; 18% of aggressive children
Role of gender: Moffitt (1993) female trajectories of aggression will reflect that of males, but with restricted representation in the higher aggression pathways
Role of genetics: Genes are responsible for 48% of the stability in reactive aggression and 85% in proactive aggression. [Tuvblad et al., 2009 Cliforni Twin study ]
Taxonomy of antisocial behaviour Moffitt et al., 1993, 2018
A theory stating that criminal acts are committed by 2 different groups of people
- Life-course-persistent antisocial behaviour (LCP)
- Adolescent-limited antisocial behaviour
Life-course persistent (LCP) offenders
Characterised by
Early-onset antisocial behaviour
Low IQ
More neuropsychological functioning
More temperamental and personality risk factors
Attentional deficits
Problems in emotion regulation
Greater family instability and family conflict
Have parents with less effective parenting strategies
Predominantly male
Adolescent-limited/ Adolescent onset people are:
Less violent
Have less severe problems
An exaggeration of normal adolescent development of rebellion and independence-seeking
They offend during their teenage years but they reform as becoming adults.
Developmental propensity theory
Lahey and Waldman, 2003
4 factors lead to an ‘antisocial propensity’ across development:
- Low cognitive ability (especially poor verbal ability)
- Low Prosociality
- High Daring
- Negative emotionality
Similarity to Moffit’s theory: the strength of the associations between these 4 factors and antisocial behaviour depends on the age of onset of behaviour
Negative emotionality
Tendency to experience negative emotions frequently, intensely, and with little provocation
Daring
Adventurousness and enjoyment of loud, rough, and risky activities.
Kids with high daring at greater risk of dev. conduct disorder (Lahey et al., 2008)