imported>Citizenofinfinity: /* See also */ Added wikilink for "Anthropic principle", which is aka "observation selection effect" and somewhat relevant to a page dedicated to "observation effect"

2025-10-24T06:20:47Z

See also: Added wikilink for "Anthropic principle", which is aka "observation selection effect" and somewhat relevant to a page dedicated to "observation effect"

New page

'''Observer effect''', '''observer bias''', '''observation effect''', or '''observation bias''' may refer to a number of concepts, some of them closely related:
{{TOC right}}
== Common uses ==
* [[Hawthorne effect]], a type of human behavior reactivity in which individuals modify an aspect of their behavior in response to their awareness of being observed
* [[Heisenbug]], a software bug that seems to disappear or alter its behavior when one attempts to study it
* [[Laws of Form]], a mathematical calculus between the distinction that an observer draws and the implied decision what not to observe, also described as ''observer dilemma''
* [[Observer bias]], one of the types of detection bias and is defined as any kind of systematic divergence from accurate facts during observation and the recording of data and information in studies
* [[Observer effect (information technology)]], the impact on the behaviour of a computer process caused by the act of observing the process while it is running
* [[Observer effect (physics)]], the disturbance of an observed system by the act of observation
* [[Observer-expectancy effect]], a form of reactivity in which a researcher's cognitive bias causes them to subconsciously influence the participants of an experiment
* [[Observer's paradox]], a situation in which the phenomenon being observed is unwittingly influenced by the presence of the observer/investigator

== Other uses ==
* [[Observer Effect (Star Trek: Enterprise)|"Observer Effect" (''Star Trek: Enterprise'')]], an episode of the television series ''Star Trek: Enterprise''

== See also ==
* [[Anthropic principle]], a proposition in philosophy of science that emphasizes the sample selection bias introduced by the mere fact that an observer exists (also called the observation selection effect)
* [[Bystander effect]], a social psychological theory that states that individuals are less likely to offer help to a victim in the presence of other people
* [[Actor–observer asymmetry]], a bias one exhibits when forming attributions about the behavior of others or themselves
* [[Demonstration effect]], an effect on the behavior of an individual caused by observation of the actions of others and their consequences
* [[Personal equation]], the idea that different observers have different reaction times, which can introduce bias when it comes to measurements and observations
* [[Placebo#Effects|Placebo]] and [[Nocebo#Effects|nocebo effects]], positive and negative effects autosuggested by a patient under an inert substance or treatment
* [[Schrödinger's cat]], a thought experiment concerning quantum superposition
* [[Uncertainty principle]], a fundamental concept in quantum mechanics

{{Disambiguation}}

Observer effect - Revision history

imported>Citizenofinfinity: /* See also */ Added wikilink for "Anthropic principle", which is aka "observation selection effect" and somewhat relevant to a page dedicated to "observation effect"