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Opinion Formation and Political Polarization

Bäck, Hanna LU orcid and Gustafsson, Nils LU orcid (2026) p.98-104
Abstract
·Public opinion is essential for democratic societies, but social media

changes how opinion is formed.

·Affective polarization – the phenomenon that individuals develop strong

emotional attachments to their own political group and strong dislike

and bias toward political outgroups – is growing in many democratic

societies.

·Affective polarization may make individuals more susceptible to

believe in and share political misinformation, suggesting that this type

of polarization may be detrimental for information processing and

information sharing in democratic societies.

·Another potential consequence of affective polarization is that it may
... (More)
·Public opinion is essential for democratic societies, but social media

changes how opinion is formed.

·Affective polarization – the phenomenon that individuals develop strong

emotional attachments to their own political group and strong dislike

and bias toward political outgroups – is growing in many democratic

societies.

·Affective polarization may make individuals more susceptible to

believe in and share political misinformation, suggesting that this type

of polarization may be detrimental for information processing and

information sharing in democratic societies.

·Another potential consequence of affective polarization is that it may

influence what political opinions individuals take on various issues,

and that it may increase ideological polarization in the electorate, for

example on issues like climate change (Less)
Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
opinion formation, political polarisation
host publication
Psychological Defence and Information Influence : A textbook on theory and practice - A textbook on theory and practice
editor
Falkheimer, Jesper and Pamment, James
pages
7 pages
publisher
Myndigheten för psykologiskt försvar
ISBN
978-91-989646-8-4
language
English
LU publication?
yes
id
9bb63559-4e5d-4b75-8025-ab4ce3e31ad8
alternative location
https://mpf.se/psychological-defence-agency/publications/archive/2026-01-19-psychological-defence-and-information-influence----a-textbook-on-theory-and-practice
date added to LUP
2026-01-19 15:40:18
date last changed
2026-01-20 10:27:40
@inbook{9bb63559-4e5d-4b75-8025-ab4ce3e31ad8,
  abstract     = {{·Public opinion is essential for democratic societies, but social media <br>
<br/>changes how opinion is formed.<br>
<br/>·Affective polarization – the phenomenon that individuals develop strong <br>
<br/>emotional attachments to their own political group and strong dislike <br>
<br/>and bias toward political outgroups – is growing in many democratic <br>
<br/>societies.<br>
<br/>·Affective polarization may make individuals more susceptible to <br>
<br/>believe in and share political misinformation, suggesting that this type <br>
<br/>of polarization may be detrimental for information processing and <br>
<br/>information sharing in democratic societies.<br>
<br/>·Another potential consequence of affective polarization is that it may <br>
<br/>influence what political opinions individuals take on various issues, <br>
<br/>and that it may increase ideological polarization in the electorate, for <br>
<br/>example on issues like climate change}},
  author       = {{Bäck, Hanna and Gustafsson, Nils}},
  booktitle    = {{Psychological Defence and Information Influence : A textbook on theory and practice}},
  editor       = {{Falkheimer, Jesper and Pamment, James}},
  isbn         = {{978-91-989646-8-4}},
  keywords     = {{opinion formation; political polarisation}},
  language     = {{eng}},
  month        = {{01}},
  pages        = {{98--104}},
  publisher    = {{Myndigheten för psykologiskt försvar}},
  title        = {{Opinion Formation and Political Polarization}},
  url          = {{https://mpf.se/psychological-defence-agency/publications/archive/2026-01-19-psychological-defence-and-information-influence----a-textbook-on-theory-and-practice}},
  year         = {{2026}},
}