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observer-expectancy effect

form of reactivity in which a researcher's cognitive bias causes them to subconsciously influence the participants of an experiment
Event cognitive_bias Q2556417
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observer-expectancy effect

Summary

observer-expectancy effect is a cognitive bias[1]. It has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • observer-expectancy effect is credited with the discovery of Robert Rosenthal[3].
  • observer-expectancy effect's instance of is recorded as cognitive bias[4].
  • observer-expectancy effect's has cause is recorded as salience[5].

Body

Context

observer-expectancy effect's instance of is recorded as cognitive bias[4].

Why It Matters

observer-expectancy effect has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[2] It is known by 16 alternative names across languages and contexts.[6]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [4] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata sitelinks. wikidata.org.
  2. [6] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). observer-expectancy effect. Retrieved May 3, 2026, from https://4ort.xyz/entity/observer-expectancy-effect
MLA “observer-expectancy effect.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/observer-expectancy-effect.
BibTeX @misc{4ortxyz_observer-expectancy-effect_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{observer-expectancy effect}}, year = {2026}, url = {https://4ort.xyz/entity/observer-expectancy-effect}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): observer-expectancy effect — https://4ort.xyz/entity/observer-expectancy-effect (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/observer-expectancy-effect · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 5w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    P14541 → 4SUrdd
    Aliases → —
    Instance of → cognitive bias
    Discoverer or inventor → Robert Rosenthal
    + 2 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
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