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Perception & CognitionMember ingredient

Primacy Effect

In some ordered recall tasks, information near the beginning is remembered better than information in the middle; first information can also shape later interpretation in some judgment tasks.

Quick answer

What does Primacy Effect mean?

The primacy effect is an order effect: in some memory and judgement tasks, information presented early is recalled better or shapes how later information is interpreted. It is not a rule that the first thing shown always wins; recency, delay, complexity and the task can weaken, reverse or remove the effect.

Public evidence overview

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Checked source previewAcademic paper

Order effects in belief updating: The belief-adjustment model

Research-assisted source review

What it supports
Primacy, recency and no order effect occurred under different combinations of task characteristics and processing method; order was not a directionally stable main effect.
Where it may not transfer
The belief-adjustment model is a theoretical account supported by selected experiments rather than a universal predictive law. The tasks are not modern interfaces, and individual goals, expertise and real consequences may change the result.
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