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 draws 86 Wikipedia views per month (cognitive_bias category, ranking #53 of 95).[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 Freebase ID is recorded as /m/03hml5[5].
  • observer-expectancy effect's Freebase ID is recorded as /m/03lxw3[6].
  • observer-expectancy effect's has cause is recorded as salience[7].
  • observer-expectancy effect's Microsoft Academic ID is recorded as 26330813[8].
  • observer-expectancy effect's Microsoft Academic ID is recorded as 2910645780[9].
  • observer-expectancy effect's RationalWiki ID is recorded as Experimenter_bias[10].
  • observer-expectancy effect's Encyclopedia of China is recorded as 189175[11].

Body

Works and Contributions

observer-expectancy effect is credited with the discovery of Robert Rosenthal[3].

Why It Matters

observer-expectancy effect draws 86 Wikipedia views per month (cognitive_bias category, ranking #53 of 95).[2] It has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[12] It is known by 16 alternative names across languages and contexts.[13]

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] . Freebase Data Dumps. wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [12] . Wikidata sitelinks. wikidata.org.
  3. [13] . 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)

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