Selective exposure
We seek out information that agrees with us and avoid what challenges us.
What it means
Selective exposure is the behavioral arm of confirmation bias: the tendency to preferentially seek, choose, and attend to information consistent with one's existing beliefs, decisions, or identity while avoiding dissonant material. Rooted in dissonance reduction, it grows stronger after a commitment is made and when the topic is identity-relevant, producing a roughly two-to-one preference for congenial over uncongenial information in meta-analysis. In high-choice media environments it enables echo chambers and contributes to attitude polarization, though people will tolerate counter-attitudinal content when they expect it to be useful or must defend their view. It operates at the stage of information selection, upstream of how evidence is interpreted. It is a key mechanism connecting individual cognition to societal fragmentation of belief.
Examples
A voter fills their news feed and podcasts almost entirely with outlets that share their politics, rarely clicking the opposing case.
After buying a car, the owner reads glowing reviews of that model and skips comparisons with the one he rejected — the choice is made, and doubt is unwelcome.
A manager committed to a restructuring reads the consultancy report backing it line by line, and leaves the dissenting internal memo unopened in her inbox.
First described in Rooted in Festinger (1957); Hart et al. (2009) meta-analysis.