Observer bias

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Observer bias

Quality:

Observer-expectancy effect - form of reactivity in which a researcher's cognitive bias causes them to subconsciously influence the participants of an experiment. Article “Observer bias” in Dutch Wikipedia has 25.2 points for quality (as of July 1, 2025). The article contains 4 references and 3 sections.

This article has the best quality in Ukrainian Wikipedia. However, the most popular language version of this article is English.

Since the creation of article “Observer bias”, its content was written by 11 registered users of Dutch Wikipedia and edited by 263 registered Wikipedia users in all languages.

The article is cited 3 times in Dutch Wikipedia and cited 813 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Dutch): #1170 in December 2014
  • Global: #35770 in December 2004

The highest popularity rank from 2008:

  • Local (Dutch): #40736 in June 2017
  • Global: #187261 in September 2013

There are 13 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1Ukrainian (uk)
Ефект очікувань спостерігача
26.7685
2Dutch (nl)
Observer bias
25.2065
3Thai (th)
ความเอนเอียงของผู้ทดลอง
24.8907
4Persian (fa)
سوگیری مشاهده‌گر
18.9123
5English (en)
Observer-expectancy effect
16.0775
6Italian (it)
Effetto aspettativa
12.3882
7Chinese (zh)
觀察者期望效應
9.9023
8Hebrew (he)
הטיית הנסיין
8.667
9French (fr)
Effet expérimentateur
8.483
10Czech (cs)
Efekt experimentátora
4.7438
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Observer bias" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Observer-expectancy effect
936 165
2Chinese (zh)
觀察者期望效應
101 376
3Italian (it)
Effetto aspettativa
64 738
4French (fr)
Effet expérimentateur
37 166
5Japanese (ja)
実験者効果
34 485
6Dutch (nl)
Observer bias
34 470
7Hebrew (he)
הטיית הנסיין
27 000
8Ukrainian (uk)
Ефект очікувань спостерігача
13 206
9Finnish (fi)
EE-ilmiö
9 177
10Czech (cs)
Efekt experimentátora
8 173
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Observer bias" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Observer-expectancy effect
2 928
2Japanese (ja)
実験者効果
274
3Chinese (zh)
觀察者期望效應
211
4Italian (it)
Effetto aspettativa
125
5French (fr)
Effet expérimentateur
102
6Hebrew (he)
הטיית הנסיין
78
7Ukrainian (uk)
Ефект очікувань спостерігача
70
8Dutch (nl)
Observer bias
63
9Thai (th)
ความเอนเอียงของผู้ทดลอง
21
10Czech (cs)
Efekt experimentátora
20
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Observer bias" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Observer-expectancy effect
108
2Hebrew (he)
הטיית הנסיין
42
3French (fr)
Effet expérimentateur
31
4Chinese (zh)
觀察者期望效應
19
5Italian (it)
Effetto aspettativa
15
6Dutch (nl)
Observer bias
11
7Czech (cs)
Efekt experimentátora
8
8Finnish (fi)
EE-ilmiö
8
9Japanese (ja)
実験者効果
6
10Persian (fa)
سوگیری مشاهده‌گر
5
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Observer bias" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Italian (it)
Effetto aspettativa
1
2Czech (cs)
Efekt experimentátora
0
3English (en)
Observer-expectancy effect
0
4Persian (fa)
سوگیری مشاهده‌گر
0
5Finnish (fi)
EE-ilmiö
0
6French (fr)
Effet expérimentateur
0
7Hebrew (he)
הטיית הנסיין
0
8Japanese (ja)
実験者効果
0
9Lithuanian (lt)
Tyrėjo tikėjimosi efektas
0
10Dutch (nl)
Observer bias
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Observer bias" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Persian (fa)
سوگیری مشاهده‌گر
413
2English (en)
Observer-expectancy effect
195
3Chinese (zh)
觀察者期望效應
67
4Hebrew (he)
הטיית הנסיין
58
5French (fr)
Effet expérimentateur
20
6Thai (th)
ความเอนเอียงของผู้ทดลอง
20
7Japanese (ja)
実験者効果
12
8Ukrainian (uk)
Ефект очікувань спостерігача
12
9Italian (it)
Effetto aspettativa
7
10Czech (cs)
Efekt experimentátora
4
More...

Scores

Estimated value for Wikipedia:
Dutch:
Global:
Popularity in June 2025:
Dutch:
Global:
Popularity in all years:
Dutch:
Global:
Authors in June 2025:
Dutch:
Global:
Registered authors in all years:
Dutch:
Global:
Citations:
Dutch:
Global:

Quality measures

Interwikis

#LanguageValue
csCzech
Efekt experimentátora
enEnglish
Observer-expectancy effect
faPersian
سوگیری مشاهده‌گر
fiFinnish
EE-ilmiö
frFrench
Effet expérimentateur
heHebrew
הטיית הנסיין
itItalian
Effetto aspettativa
jaJapanese
実験者効果
ltLithuanian
Tyrėjo tikėjimosi efektas
nlDutch
Observer bias
thThai
ความเอนเอียงของผู้ทดลอง
ukUkrainian
Ефект очікувань спостерігача
zhChinese
觀察者期望效應

Popularity rank trends

Best Rank Dutch:
#40736
06.2017
Global:
#187261
09.2013

AI rank trends

Best Rank Dutch:
#1170
12.2014
Global:
#35770
12.2004

Local AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Observer-expectancy effect from Wikipedia articles about Clever Hans, Self-fulfilling prophecy, Pygmalion effect, List of cognitive biases and Confirmation bias. Whereas reading the article about Observer-expectancy effect people most often go to Wikipedia articles on Pygmalion effect, Blind experiment, Clever Hans, Confirmation bias and Demand characteristics.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 16 March 2026

On 16 March 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 98th Academy Awards, Michael B. Jordan, Sinners, Jessie Buckley, Paul Thomas Anderson, Sean Penn, One Battle After Another, Amy Madigan, Hamnet, Timothée Chalamet.

In Dutch Wikipedia the most popular articles on that day were: Hans van Willigenburg (televisiepresentator), Moord op Marianne Vaatstra, Joran van der Sloot, Sean Penn, Maurizio Gucci, Gucci, Patrizia Reggiani, Michael B. Jordan, Maaike Schoon, Silvio Erkens.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information