Importance:
to know effects porn have on people's sexual health, behaviours and attitudes
look at influence of unintended pornography viewing amongst adolescents
spam emails (Chen et al 2013)
mistyping (Flood 2007)
68% of adolescents in the US have experienced unintended exposure (Hardy 20013)

Attitudes towards women
One study by Bridges et al. (2010)
scenes analysed, 88.2% contained physical aggression such as spanking and
48.7% of scenes contained verbal aggression like name-calling.
perpetrators mostly men and the victim was usually women.
The targets most often response neutrally or with pleasure unlike real sex
social learning theory: Banduras Bobo doll modelling, worrying: the amount of violence in pornography - physical and verbal - is that its users may begin to copy this in real life situations
Especially boys, consume starts young-> perception: women should be treated aggressively, sexual objects
Zillman & Bryant (1982)
showed that showing people who were shown high levels of pornography in an experiment showed less compassion towards rape victim and women in general.
Hald, Malamuth & Lange (2013)
found that increased pornography use was associated with less egalitarian attitudes towards women, meaning using pornography makes people less likely to see women as equals. It’s usage is also associated with more hostile sexism.

Sexual Dysfunction
Park et al. (2016)
found that pornography use is linked to erectile dysfunction and increased sexual dysfunction. When men terminated internet pornography use, the negative effects were eliminated. However there is a lot of conflicting research in this area.
Zillman & Bryan (1988)
had men and women watch pornography for 6 consecutive weeks. In the 7th week, they reported decreased sexual satisfaction. Specifically, they were less satisfied with their partner’s affection, appearance and performance.
Stewart & Szymanski (2012)
found that young women reported that the more their partners used pornography the less sexual satisfaction they experienced themselves
because: porn is not realistic in length intensity etc.

Exposure on children
Pornography easily accessible -> increased risk of young children being exposed
Rothman et al. (2014) found that pornography frequently is shared in schools.
Manning (2006) and Flood (2009) have reported various negative effects of porn on children when exposed to pornographic imagery before being capable to process such material. That period of vulnerability extends from three years of age all the way up to twelve.
Children report for example feelings of shock, embarrassment and anger, as well as anxiety and even depression. Children exposed to porn may become obsessed with acting out the sexual acts that they have seen, and this can be very disruptive to their peers who have to witness or even be directly subjected to this behaviour.
exposure to pedophiles who look for victims

Relationships
women watching porn considered to have a positive impact on the quality of the realtionship as they tend to watch it with their partner
while it is considered negative if men watch them alone
which raises negative connotations such as infidelity and had negative effect on the couple's sexual relationship
Oulsen et al 2013

Effects on behaviour
Despite common belief there has been found to be little or no link between watching pornography and having increased sexual risk taking amongst young people. (Sinkovic et al, 2013)
neutral finding no in or decreasing sexual risk taking

Griffith et al., 2013
female porn performers: had higher self-esteem, positive feelings, social support, sexual and life satisfaction and spirituality compared to the matched group.
Abbott (2000) also found that pornography offered an ideal setting in which to violate social norms of sexuality with limited or no criticism.
Negative effects:
Griffith et al: porn actresses were more likely to have used drugs
Javanbakht data from two clinics that provided STI testing for porn actors
only 6% of actors reported using a condom whilst on set -> higher risk of STIs and unintended pregnancy
Evans-DeCicco & Cowan, 2001, also found that female pornography actors were believed to come from more dysfunctional families than male pornography actors.
male pornography actors were attributed more positive motivations for their work than female pornography actors