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Related Concept Videos

The Availability Heuristic01:08

The Availability Heuristic

A heuristic is a general problem-solving framework (Tversky & Kahneman, 1974). You can think of these as mental shortcuts that are used to solve problems. Different types of heuristics are used in different types of situations, and the impulse to use a heuristic occurs when one of five conditions is met (Pratkanis, 1989):
Heuristics01:21

Heuristics

Heuristics are problem-solving strategies that use mental shortcuts to simplify decision-making. Unlike algorithms, which must be followed precisely to achieve a correct result, heuristics offer a general problem-solving framework. They save time and energy but can sometimes lead to less rational decisions.
People often rely on heuristics when faced with an overload of information, limited time, low importance of the decision, limited information, or when a heuristic readily comes to mind. For...
The Representativeness Heuristic02:13

The Representativeness Heuristic

The representative heuristic describes a biased way of thinking, in which you unintentionally stereotype someone or something. For example, you may assume that your professors spend their free time reading books and engaging in intellectual conversation, because the idea of them spending their time playing volleyball or visiting an amusement park does not fit in with your stereotypes of professors.
Social Proof00:52

Social Proof

Social proof is a form of persuasion based on comparison and conformity. People compare their behavior and actions to what others are doing and will change to conform to do what their peers do.
Halo Effect01:27

Halo Effect

The halo effect is a cognitive bias in which an individual's overall impression influences judgments about their specific traits. This psychological phenomenon leads people to associate positive characteristics with those they perceive as generally good and negative characteristics with those they view as bad. This effect is particularly influential in social perception, professional evaluations, and decision-making processes.The Psychological Basis of the Halo EffectThe halo effect is rooted...
Cause and Effect01:53

Cause and Effect

While variables are sometimes correlated because one does cause the other, it could also be that some other factor, a confounding variable, is actually causing the systematic movement in our variables of interest. For instance, as sales in ice cream increase, so does the overall rate of crime. Is it possible that indulging in your favorite flavor of ice cream could send you on a crime spree? Or, after committing crime do you think you might decide to treat yourself to a cone?

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Related Experiment Video

Updated: Jun 12, 2026

The HoneyComb Paradigm for Research on Collective Human Behavior
06:48

The HoneyComb Paradigm for Research on Collective Human Behavior

Published on: January 19, 2019

The Simon effect as tool and heuristic.

Bernhard Hommel1

  • 1Leiden University, Institute for Psychological Research & Leiden Institute for Brain and Cognition, The Netherlands. hommel@fsw.leidenuniv.nl

Acta Psychologica
|May 29, 2010
PubMed
Summary
This summary is machine-generated.

The Simon effect, a cognitive psychology phenomenon, has evolved from a simple observation to a key tool for studying attention, spatial representation, and executive control. Its 43-year history reveals its significance in understanding cognitive processes.

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Area of Science:

  • Cognitive Psychology
  • Human Factors Research

Background:

  • The Simon effect, observed for 43 years, was initially a curiosity in human factors.
  • It has since become a significant area of psychological theorizing and research.

Purpose of the Study:

  • To review the historical development and major characteristics of the Simon effect.
  • To explore its utility in investigating cognitive functions like attention and executive control.
  • To discuss theoretical advancements and ongoing debates surrounding the Simon effect.

Main Methods:

  • Review of historical research on the Simon effect.
  • Analysis of the Simon task's characteristics and applications.
  • Discussion of theoretical frameworks and controversies.

Main Results:

  • The Simon effect is a valuable tool for studying attentional operations.
  • It provides insights into the representation of space, body, and intentional action.
  • The effect is crucial for understanding executive control.

Conclusions:

  • The Simon effect has a rich history and diverse applications in cognitive psychology.
  • It remains a vital area for research into fundamental cognitive processes.
  • Ongoing research continues to refine our understanding of the Simon effect and its implications.