Tuesday, December 10, 2013
Aggression - Definitions
Aggression - Definitions
• “Aggression is a hostile action directed against a person or a thing” – Dictionary of Psychology, 1987. Need to assault or injure
another, to belittle, harm ridicule, or accuse
maliciously, to punish severely, or to engage in sadistic behavior (Murray, Aggression - DefinitionsPotentially harmfulacts, which is
intentionally inflicted and aversive to the
victim (McEvoy, Estrem, Rodriguez,
and Olson; 2003Research studies reveal that
aggression and violence in humans and animals areinherent as well as learnt faculties (Berk, 1994; Baron &
Byrne, 1997; ACT, 2003). heories of Aggression. Instinct theories of aggression
– aggression as an innate tendency
1.1. Freud’s theory
• aggression stems from innate
tendencies. • is part of human nature and humans are “programmed” for violence by
their basic nature.
• Believed that aggression stems from a
powerful death wish or instinct called
“thanatos” possessed by theindividuals.
Freud’s theory He said, this death instinct is
initially aimed at self- destruction.
• However, it is often redirected
outward, at others. Freud believed
that hostile impulses generate within and snowballs overtime.• If not released, they acquire the capacity to conduct serious acts of
violence. (Baron & Byrne, 1997;
Smith, A.K, 1999) Konard Lorenz
• He combined the instinct theory presented
by Freud and Darwin’s theory of evolution.
• proposed that aggression stems from a
fighting instinct, which develops during the
course of evolution because it promoted
survival of the species.
• He said that aggression promotes
• The spread of the population over a widearea
• This fighting instinct is related to mating,
fighting helps assures that only the strongest
would pass genes on to future generationsheories of Aggression 1. Instinct theories of aggression – aggression as an innate tendency
• It is said that Freud and Lorenz used
somewhat circular reasoning.
Critic’s state since they observe that
aggression is a widespread behavior
in animals and humans they must be
reasoned that it is a universal behavior and thus originate within
and is a built in urge. They use the
high incidence of aggression as
support for the presence of such
instincts and impulses. (Baron and
Byrne, 1997) Biological theories of
aggression
• Growing body of evidence suggests that
vascular and neuro-endocrine factors
predispose some individuals toward
aggression in comparison to nonaggressive
individuals.
• Schmidt, Fox, Rubin, Hu, and Hamer (2002)
report that preschool children with long
versus short repeat alleles of the DRD4
(Dopamine D4 receptor) gene were
described by their mothers to have
significantly more problems with
aggression at age 4. Impact of Serotonin
• Reduced serotonin (an important
neurotransmitter) level cause individuals
to behave aggressively.
• In study which made a careful analyses
of blood chemistry of three groups of
persons consisting; a group who had
attempted suicide, a group who had
been institutionalized from childhood
due extreme indication of violent
behavior and a group of healthy
volunteers. Impact of Serotonin
• The results indicate that the latter two groups
differed from healthy volunteers with respect
to measures reflecting reduced levels of
serotonin, drawing the interpretation that the
experimental groups did not have the ability to
control their impulses due to this effect.
(Marazzitti et al, 1993; Baron & Byrne, 1997).
• However, results of the study conducted by
Schmidt, Fox, Rubin, Hu, Hamer, 2002 do not
seem to support this fact as their results
indicate that no significant group difference
was found for the correlation between
behavioral measures of aggression and
serotonin transporter or serotonin 2C receptor
genes. Impact of Testosterone
• Growing body of evidence suggest that a
male sex hormone called testosterone
affects the level aggression that individuals
display.
• Evidence comes from female transsexuals
receiving large doses of testosterone report
higher levels of anger and aggression during
treatment (Van Goozen, Frijda, & de Poll,
1994).
• Sanchez-Martin, Fano, Ahedo, Cardas, Brain,
and Azpiroz, 2000 assessed potential
relationship between series of behavioral
interactions including aggressive behaviors
and testosterone levels of 28 boys and 20
girls of preschool age. Impact of Testosterone
• Their correlation analysis indicated
that positive relationship existed between testosterone and giving and receiving aggression in the context of social interaction in boys but not in the playful aggression during play.
• They point out that testosterone can
be a useful biological marker for serious aggression. Brain damage (atrophy
etc.,), and neural mechanisms – • Extreme aggression may be
linked to neural mechanisms that regulate our emotions.
• Individuals who have tumors or
damaged their brains due to
accidents have reported to
behave in an extremely violent
manner (Perry, 1997). Drive theories of aggression • These theories suggest that aggression stems from externally elicited motives or drive to harm others. There are several theoretical approaches presented in this context. They are: Frustration Aggression
Hypothesis - Dollard and Miller
• frustration causes the arousal of a drive
whose primary goal is to harm others.
(Baron and Byrne, 1997).
• Hence, According to this view, frustration
always leads to some form of aggression
and aggression always stems from frustration.
• However, both of these statements
express the continuous and unavoidable
nature of aggressive impulses leaving little
chance to control one’s mind. Frustration Aggression
Hypothesis - Berkowitz
• Berkowitz (1989) proposed a
revision. • According to him frustration is an
aversive practice leading to aggression due to its unpleasant nature.
• Berkowitz was under the impression
that frustration sometimes leads to aggression due to its basic relationship between negative affect and aggression. Frustration Aggression
Hypothesis - Berkowitz
• He further said this could explains the
reason behind sudden or unexpected/
unjustified frustration causing stronger
aggressive impulses.
• Berkowitz proposed that when individuals
or animals are unable to reach their goals
due to unperceived stimuli, the generated
frustration toward these stimuli is
stronger or produces more negative affect
as compared to a one that is expected or
perceived as justifiable. Social learning theories of aggression• Social learning theory contends that
aggressive behaviors are learned
through direct experience or through
observation (Bandura, 1961; Baron &
Byrne, 1997).
• Individuals do not inherit violent
tendencies but learn them through
attention, retention, motor reproduction and motivation. Cognitive theories of aggression
• Aggression causes of retaliation, or fight or flight are complex that it was contended earlier. • Whether an individual would behave aggressively
depend on several cognitive factors such as
scripts or ‘cognitive programs, appraisal (reason behind the event) affect (current mood of the
individual etc.,) and other factors (e.g.,
memories and thoughts) that a person may have regarding the event.
• Also state that an individual’s current mood
would also affect the way he/she would behave.
• If individuals are in an aversive unpleasant mood it would result the person to behave negativel
and aggressively (Baron & Byrne, 1997). Forms of Aggression
• i. Physical/ Overt Vs Relational Aggression.
Physical - overt display of aggression such as
hitting, pushing, kicking, throwing objects or
threatening with an intention of harming another individual (Siegler, Deloache & Eisenbeg, 2003; McEvoy et al, 2003).
Relational - not so visible forms of aggression such as social exclusion, facial expressions of
aggression and body postures (McEvoy et al.,
2003; Crick, Casas & Ku, 1999)
Research Studies - girls displayed more
relational aggressionii. Reactive Vs Proactive Aggression
• Reactive - more hostile or impulsive form
of aggression is considered as directed at
someone or something, to be person
oriented rather than goal oriented
• Proactive - goal oriented, unemotional and
reported to be evoked with little
physiological arousaliii. Defensive Vs Instrumental
Aggression
• Kenneth Dodge (1980) identifies defensive
aggression as a form of hostile and assertive
response to a perceived threat or intentional
frustration.
• He differentiates defensive aggression from
instrumental aggression, the primary goal
of which is not to harm the victim but harmful
behavior is projected to gain an independent
reward/ valued resource and which may be
changed by the appropriate manipulation of
reward and punishmentAggressive Behaviors in Children
Research Outcomes
• children indulge in different types of
aggressive behaviors such as direct physical,
verbal, and relational aggression, indirectverbal, and relational aggression.
• aggressive behaviors are common phenomena in the preschool class • boys were somewhat more aggressive than
Girls • Children are more likely to aggress if another child had just performed an act of aggressionDevelopmental Aspects
of Aggression
• During the second half of the first year, infants develop the cognitive capacity to identify sources of anger and frustration and the motor skills to lash out at them.
• The most common is instrumental aggression, aimed at obtaining an object, privilege, and space with no deliberate intent to harm another person
(Berk, 1994; ACT, 2004).
• during the early-years children instigate brief
aggressive episodes more frequently in
comparison to older children who show less
frequent but continued episodes of aggression
(Fagot & Hagan, 1985). Studies point out that aggression as an enduring behavioral pattern remains consistent
from early childhood to-at times-adulthood.
• Rubin, Burger, Dwyer and Hastings (2003)
observed 104 toddlers interacting with a same
sex peer and their mothers. They found that
children who were aggressive as toddlers
inclined to be aggressive even in their
preschool years.
• Similar findings were reported in a study
conducted by Keenan and Shaw, (1994) in a
laboratory assessment conducted with 89
toddlers. boys tended to deliver and receive more physical aggression
• girls were more prone to give and receive more relationalaggression.
• qualitative review of relational aggressive data - preschool children exhibited age-advanced relationally aggressive strategies that involved gossiping, secret telling and rumor spreading though occurrences of these behaviors were subtle/ covert in nature.
Ostrov, Woods, Jansen, Casas and Crick (2004)
• peer ratings for physical aggression were higher for boys than for girls.
Tapper and Boulton (2004) Personal Causes Associated with Aggression
• Dodge (1980) found that aggressive boys
expected continued hostility from the peer instigators.
• Children who are rejected by their peers have
an inclination to focus on instrumental
outcomes more often than relational outcomes
and may not be considerate about the
potential emotional harm that they cause to
the peers (Crick & Ladd, 1990).
• Aggressive children seem to enjoy the
aggressing against the target (Arsenio et al.,
2000)
• Have difficulties in understanding emotions of others (Arsenio et al., 2000; Denham, et al.,
2002). Aggression - Factors
Associated with Parenting
• Parental socialization and child rearing practices have been recognized as contributory factors of aggression.
• Physical punishment, rejection of the child,
inconsistency and disorganization in the family
system (Baumrind, 1997; McMurran, 1999;
Kitzmann, et al., 2003) seem to make children feel hurt, angry and violent as children may grow up believing that the world is a hostile and dangerous place like his/her family and aggression is one of the best options of resolving conflict (Staub,
1989). Aggression - Factors
Associated with Parenting
• Farver, et al. (2005) reported that
mother’s depression acts as a partially mediating factor between family conflicts and preschool children’s distress.
• Stanger, Dumenci, Kamon, and
Burstein (2004) found that inconsistent
discipline was significantly related to
children’s rule breaking, aggressive
behaviors and attention seeking. Aggression in Children as a Consequence of Violence
• There is evidence that children who behave
aggressively with their peers have been victims of some form of violence (Conaway & Hansen,
1989)
• Exposure to violence in early childhood leads to potential disruptive behaviors in adolescents
and adults (Conduct problem prevention group,
1996; Staub, 1989; Widom, 1989; Wilson &
Hernstein, 1985).
• Research outcomes - Children are affected by
different types of violence such as domestic,
television, community and politicalCost and Consequences of
Aggression to Varied Parties
• Children and youth become involved in
harmful violence in several different
ways:
• Aggressors who initiate violence on
victims
• Victims who receive violence
• Bystanders, who support violence
through instigation, active
encouragement and passive
acceptance of violence (Staub, 1989;
Slaby & Strringham, 1994). Victims
• Children used internalizing (crying, worrying too
much about it etc.) and distancing strategies when they were targets of relational aggression
• used externalizing strategies such as throwing things, hitting or getting angry when they were the target of overt or physical aggression.
• Younger children reported that they receive a
greater amount of aggression (both overt and
relational).
• High target children were more likely to use
internalizing strategies and use less problem
solving strategies than their less victimized peers.
• Phelps (2001)
• boys often victimize girls. Victims repeatedly bullied by peers are
often reported to have suffered long-term
consequences of social rejection,
depression, and impaired self-esteem
(Olweus, 1993; Straus, 1995).
• at risk of becoming aggressors, by
responding to the perceived threat with
defensive aggressive attack, retaliating
against their aggressors or becoming a
perpetrator of aggression against others
(McCord, 1983; Widom, 1989;
Straus1991). Also, being high targets of relational aggression may result in emotional difficulties
for children such as depression and anxiety in
comparison to their non-targeted peers (Crick
& Grotpeter, 1995).
• Therefore, victims of aggression in early
childhood, if not helped to respond effectively,
are likely to be victimized repeatedly
(Patterson, Littman, & Bricker1967; Schwartz,
Dodge, & Coie, 1994). .Bystanders
• Bystanders (i.e., those who witness conflict
among others) often contribute to aggression
among other children through direct instigation, active encouragement, or passive
acceptance (Staub, 1989; Slaby, Roedell,
Arezzo, & Hendrix, 1994).
• Musher-Eizenman et al (2004) found that
witnessing peer aggression predicted higher
levels of fantasizing about both direct and
indirect aggression in school children
indicating that witnessing aggressive
episodes may enhance the potential for
aggression in children. Aggressors
• Young children who act aggressively tend to show
other difficult and maladaptive social behaviors, such as tantrums, defiance and failure to cooperate.
• Persistent aggressive behavior directed toward peers often leaves the aggressively acting child with few or no positive, stable peer relationships.
• Physical aggression is predictive of peer rejection during the preschool years (Ladd, 1988).
• Children with aggressive behaviors are at high risk for loneliness and lack of peer support to help
them through the difficult times (Crick &
Grotpeter, 1995; Crick et al., 1997; Hawkins,
1993; Steinkamp, 1990). Aggressors
• Crick and Grotpeter (1995) found that
relational aggression might also have a
harmful impact for aggressors such as
social and emotional maladjustments,
higher levels of loneliness, depression,
and negative self-perceptions in
comparison to their peers.
• Findings are consistent with that of Crick
et al. (1997) who also report that both
forms of aggression were related to
social psychological maladjustment for
preschool childrenYoung children who show signs of aggression are more likely to perform
poorly in academic activities and in
later childhood and adolescence are at
a greater risk of dropping out of
school (Raver et al., 2002).
• Aggressive children are not accepted
by peers and teachers (Kupersmidt &
Coie, 1990; Shores & Wehby, 1999) Peer rejection or acceptance is related to later
maladjustment and poor academic
performance, especially among elementary
school children and adolescent boys (Rubin,
Bukowski, & Parker, 1998).
• These antisocial children participate less
frequently in classroom activities and do more
poorly in school than their more emotionally
positive, prosocial counterparts, even after
one controls for the effects of children's
preexisting cognitive skills and family
backgrounds (Ladd, Birch, & Buhs, 1999). A high level of aggressive behavior in
childhood is also predictive of a variety of
serious problems in adulthood, including
criminal violent behavior, other anti-social
behavior, spouse abuse, and tendency
toward severe punishment of one’s
children. (Huesmann et al.,1984; Conduct
problem prevention group, 1996). It also involves costs in psychological,
social, health and legal areas
• and there is an enormous physical and emotional long term cost to the families, friends, teachers, and significant others associated with the aggressor and the victims (WHO, 2000;
Elliot, Prior, Merrigan, & Ballinger,
2002). Research reviewed focuses on three main factors in the development of aggression and other forms of internalizing behavior.
1. Forces that are internal to the child (gender,
temperament, biological development, self
regulatory processes and social cognitive
information processing)
2. Socialization forces that emerge within a child’s social interactions and relationships (Parenting
styles, attachment relationships, and peer
interactions)
3. External forces such as structure and violence in the family, and media ( specifically television
violence), violence in the community and country)