Under normal circumstances, observing a violent act results in anxiety & empathy with the victim, ie the violence isn't seen as a desirable or normal/ common behaviour.
If a person has been repeatedly exposed to violence in the media, they become 'desensitised' to these effects & no longer feel as anxious or sympathetic to the victim.
Desensitisation:
Takes a long time to happen.
Desensitised individuals are less likely to notice real life violence & wouldn't have negative attitudes towards the use of violence.
All of these things lead to an increase in the likelihood that the person would use aggression themselves.
Evaluation of desensitisation- strength:
Carnagey et al (2007) produced a study that supports the idea that media violence reduces activation of SNS in response to exposure to violence.
PPs played either a violent or non-violent game for 20 minutes & then watched a 10 minute film clip containing scenes of real-life violence while their heart rate & skin conductance response (measure of physical arousal) were monitored.
Those PPs who had previously played the violent computer game had a lower heart rate & skin conductance response while viewing the filmed real-life violence.
Evaluation of desensitisation- weakness:
Desensitisation can be detrimental, not only does it lead to an increase in aggressive behaviours, but also a reduction in helping behaviours, ie stopping to help someone in distress.
Desensitised individuals are 'comfortably numb' to the pain & suffering of others.
Disinhibition:
Under normal circumstances, we are inhibited from being aggressive, because we are socialised with norms against the use of violence.
The media portrayal of aggressive behaviour may change the standards of what is acceptable behaviour.
This effect works in 2 ways: short term & long term.
Disinhibition:
In the short term- exposure to violence in the media triggers the SNS. In this aroused state, inhibitions are temporarily suppressed by the drive to act (fight/flight).
In the long term- exposure to violence in the media causes a gradual shift in social norms of aggressive behaviour. Our society teaches us that violence isn't the answer, however often in the media, violence occurs & can be rewarded or left unpunished, so the viewers guilt & concern are also reduced.
This can legitimise/ justify the use of violence in everyday life, as it undermines social sanctions that usually inhibit such behaviour.
Evaluation for disinhibition- weakness:
There are many other factors that can impact on whether a person experiences disinhibition, therefore the theory does not provide a complete account for the influence of media on aggression.
For example, age is a factor. Younger children= more drawn into action on TV & less likely to have an awareness of motivations and potential consequences of the violence they have seen.
Evaluation for disinhibition- strength:
The presence of negative consequences following violence in media can make disinhibition less likely.
Goranson (1969) showed people a film of a boxing match where there were 2 alternative endings.
In one ending, there were no apparent consequences but in the second ending, the loser of the fight was seen to take a bad beating & he ended up dying.
PPs who did not see the negative consequences were more likely to behave aggressively after viewing the fight than those who did see the consequences.
Cognitive Priming:
Berkowitz (1984) suggested this explanation as a short-term effect of violence in the media.
The cognitive aspect is the violent or aggressive thoughts/ ideas/ schema/ memories & priming refers to a temporary increase in the accessibility of these thoughts, following exposure to violence in the media.
Cognitive Priming:
Observing aggression in the media activates 'the script', ie thoughts about violence which, through association, can activate other aggressive thoughts linked to reality.
With these thoughts more accessible, we are more likely to misinterpret (bias) social information in a hostile/ aggressive manner as you are primed for action (eg someone accidentally bumps into you, but you assume it was purposeful).
Priming is unconscious.
Evaluation of cognitive priming- strength:
Research support (Bushman 1998)- PPs watched either a 15 minute segment of a violent film or a non-violent film.
PPs who watched the violent film subsequently had quicker reaction times to aggressive words than did those who had seen the non-violent film.
Video content did not, however, influence reaction times to non-aggressive words.
Evaluation of cognitive priming- weakness:
Other factors are also important, making the theory incomplete.
For example, research suggests that the realism of the violence portrayed in the media is an important factor with more realistic violence leading to an increase in cognitive priming & vice-versa.
This means less realistic (such as cartoon) violence is less likely to lead to a cognitive priming effect.