Subscribe
The latest psychology and neuroscience discoveries.
My Account
  • Mental Health
  • Social Psychology
  • Cognitive Science
  • Neuroscience
  • About
No Result
View All Result
PsyPost
PsyPost
No Result
View All Result
Home Exclusive Social Psychology

Online hate speech proliferates following terrorist attacks — but only when social norms allow it

by Beth Ellwood
December 7, 2020
in Social Psychology
Share on TwitterShare on Facebook

A recent study in Proceedings of the National Academy of Sciences found that hostility toward refugees increased in an online forum following two terrorist attacks in Germany. When social norms suggested a non-acceptance of hate speech, however, this rise in hostility was attenuated.

Study authors Amalia Álvarez-Benjumea and Fabian Winter argue that social norms — accepted rules of behavior among a given group — tend to keep outward expressions of anger and violence at bay. Terrorist attacks, however, tend to provoke an onslaught of negativity and prejudice toward outgroups, particularly when the prosecutors of such attacks are members of a visible minority.

“In 2015 and 2016 there was an increase in the number of terrorist attacks in Germany, and Europe in general, attributed to Islamist terrorists,” Amalia Álvarez-Benjumea told PsyPost.

“Hatred often follows terrorist attacks, particularly when the attacker is characterized as a member of a social or religious minority. We wanted to test how the attacks were affecting social norms with regard to the expression of prejudice in online settings.”

To study this, the researchers created an online forum and invited 274 German residents to participate. The subjects were shown various photographs depicting one of two social topics — refugees or gender rights. Participants were asked to leave a comment below the discussion threads accompanying each image.

To manipulate the role of social norms on the forum, the researchers created three different conditions. In the no-norm condition, subjects saw discussion threads with comments ranging from positive to hostile. In this condition, it was unclear whether hate speech was accepted among the group or not. In the weak-norm condition, no hostile comments were shown in the discussion threads, suggesting a social norm that went against hate speech. In the strong-norm condition, only very positive comments were shown — further reinforcing the non-acceptance of hate speech.

Importantly, the study took place around the time that two terrorist attacks took place in Würzburg and Ansbach in July 2016, attacks which were later claimed by the Islamic State. Roughly half the sample was recruited prior to the two terrorist attacks and the other half was recruited after the attacks, allowing researchers to examine whether hate speech had increased following the attacks.

The researchers found that while hate speech directed toward refugees increased following the terrorist attacks, hostility toward other groups (concerning gender rights) did not — suggesting that the Islamist terrorist attacks were responsible for the increased hostility toward refugees.

Google News Preferences Add PsyPost to your preferred sources

When the researchers compared the results from the study’s three conditions, an interesting finding emerged. Only in the no-norm condition — when the discussion boards were free of norms regulating hate speech — did hostile comments toward refugees increase after the attacks. When the discussion boards were absent of hostile comments, exemplifying a norm against hate (weak-norm condition), or only contained positive comments (strong-norm condition) hate speech did not get worse after the attacks.

What’s more, this effect appeared to be strongest for the comments that were the most hostile. In the no-norm condition, the very hostile comments experienced a greater jump in severity after the attacks than the less hostile comments, suggesting that terrorist attacks “radicalize the already hateful comments” while only slightly affecting the positive or middle-ground comments.

“The effect of terrorist attacks on online xenophobia is highly dependent on the local context and the social norms. Prejudiced attitudes are likely to be voiced only if the perceived social acceptability of expressing prejudice increases. Norms against hate speech thus act as a bulwark that prevents extremely prejudiced opinions from being voiced,” Álvarez-Benjumea told PsyPost.

The researchers take these findings as evidence that social norms effectively dictate whether or not prejudice attitudes will be expressed following a terrorist attack. “Descriptive norms against hate speech thus act as a bulwark that prevents extremely prejudiced opinions from being voiced,” Álvarez-Benjumea and Winter discuss. “On the positive side, the vast majority of people would not be converted into spreaders of hate, just because others do so. However, it also suggests that those who already hold negative beliefs about minorities seem to be encouraged to paint an even darker picture of immigration in Western societies.”

But the study — like all research — includes some caveats.

“Our study paints a simplified picture of an online community in which participants do not know each other and interact only once. We do not know how the effect would be in closer online communities where users are not anonymous. Furthermore, different individuals may react differently. I am thinking of internet trolls or other instigators of prejudiced behavior,” Álvarez-Benjumea explained.

The study, “The breakdown of antiracist norms: A natural experiment on hate speech after terrorist attacks”, was authored by Amalia Álvarez-Benjumea and Fabian Winter.

Previous Post

Dog-assisted therapy shows promise in treating youth with fetal alcohol spectrum disorders

Next Post

Patients with public speaking anxiety show improvement after VR exposure therapy, study finds

RELATED

Anti-male gender bias deters men from healthcare, early education, and domestic career fields, study suggests
Sexism

How sexual orientation stereotypes keep men out of early childhood education

March 13, 2026
Contact with a service dog might help individuals with PTSD sleep better, study finds
Political Psychology

Veterans are no more likely than the general public to support political violence

March 13, 2026
A single Trump tweet has been connected to a rise in arrests of white Americans
Donald Trump

Texas migrant buses boosted Donald Trump’s vote share in targeted cities

March 12, 2026
Shared genetic factors uncovered between ADHD and cannabis addiction
Social Psychology

Genetic tendency for impulsivity is linked to lower education and earlier parenthood

March 12, 2026
Scientists just uncovered a major limitation in how AI models understand truth and belief
Artificial Intelligence

The bystander effect applies to virtual agents, new psychology research shows

March 12, 2026
New study highlights power—not morality—as key motivator behind competitive victimhood
Dark Triad

People with “dark” personality traits see the world as fundamentally meaningless

March 11, 2026
Midlife diets high in ultra-processed foods linked to cognitive complaints in later life
Social Psychology

The difficult people in your life might be making you biologically older

March 11, 2026
New study finds link between ADHD symptoms and distressing sexual problems
Relationships and Sexual Health

A surprising number of men suffer pain during sex but are less likely than women to speak up

March 11, 2026

STAY CONNECTED

LATEST

Early exposure to a high-fat diet alters how the adult brain reacts to junk food

How sexual orientation stereotypes keep men out of early childhood education

Your personality and upbringing predict if you will lean toward science or faith

Veterans are no more likely than the general public to support political violence

People with social anxiety are less likely to experience a post-sex emotional glow

The extreme male brain theory of autism applies more strongly to females

A newly discovered brain cluster acts as an on and off switch for sex differences

Researchers identify personality traits that predict alcohol relapse after treatment

PsyPost is a psychology and neuroscience news website dedicated to reporting the latest research on human behavior, cognition, and society. (READ MORE...)

  • Mental Health
  • Neuroimaging
  • Personality Psychology
  • Social Psychology
  • Artificial Intelligence
  • Cognitive Science
  • Psychopharmacology
  • Contact us
  • Disclaimer
  • Privacy policy
  • Terms and conditions
  • Do not sell my personal information

(c) PsyPost Media Inc

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In

Add New Playlist

Subscribe
  • My Account
  • Cognitive Science Research
  • Mental Health Research
  • Social Psychology Research
  • Drug Research
  • Relationship Research
  • About PsyPost
  • Contact
  • Privacy Policy

(c) PsyPost Media Inc