When people consider a value and then have to estimate an unknown quantity. The estimated number will stay close to original number considered, whether or not the original number is related to the unknown quantity. There is debate on whether the effect is an adjustment heuristic (Tversky), an example of priming (Kahneman), or both.

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When a sensory experience (hearing a word/phrase, or seeing a picture), triggers an associational response that effects your decision making afterwards. The presentation of some stimuli affects someones response to the presentation of a following one.

Priming effect

- Substituting questions
- Representative heuristic 
- Availability heuristic
- Affect heuristic
- Anchoring 
- Stereotype
- Self-Based Heuristic (SBH)
- Frugal Cognitive Heuristic
- Bandwagon heuristic
- Endorsement heuristic
- Working backwards

Types of heuristics

Kahneman, Daniel. Thinking, Fast and Slow. Nota, 2013.

Thinking Fast and Slow by Daniel Kahneman

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

The presentation of some stimulus affects how someone perceives/reacts to the presentation of a following one because the first one was similar in some way to the latter (one does not need to remember the previous or be conscious of its affects for there to be an affect).

Repetition Priming 

Nodes are activated when nodes with links to them (or close to them) are activated. The nearby nodes are primed to be retrieved by memory more easily.

Spreading activation

Information shown in the beginning of something has a greater affect than information revealed later. Embodied by the quote "put your best foot forward."

The Primacy Effect

Priming has been used in the realms of psychology as a way to alter people's behaviors or performance. It can be overt (supraliminal) or covert (subliminal). A subsequent behavior, which is a result of the priming, occurs typically without conscious awareness. In the field of microtask crowdsourcing, multiple types of primes have been used to increase and alter people's performance.

Priming to Increase Performance in Microtask Crowdsourcing

Participants were given a headline that did not relate to COVID-19, and they were asked to rate its accuracy. The prompt was essentially priming the participants with the concept of accuracy.

COVID-19 Misinformation Prompt Toolkit: Evaluation Prompt

Anchoring

The common association between 'peanut butter' and 'jelly' serves as an example of priming. When an individual is prompted with the term 'peanut butter,' the concept of 'jelly' is primed and becomes more easily retrievable. This occurs because of the strong, frequently reinforced link between these two concepts within a person's semantic network.

Peanut Butter and Jelly as an Example of Priming

We often make predictions based on how much a description fits our preconceived stereotypes. This leads to ignoring base rates (base rate neglect) and the accuracy of the description.

Representative heuristic

An oversimplified representation of group. It often focuses on negative characteristics.

Stereotype

The self-based heuristic refers to the degree to which an individual’s own characteristics contribute to ratings of another’s personality. We use the self as a reference to judge others.

Self-Based Heuristic (SBH)

The emotion at the time of hearing about something affects our judgement of it. On the most basic level if we are in a bad mood, we will evaluate something worse and if we are in a good mood, we will evaluate it as better. 

Affect Heuristic

Fast and frugal heuristics are used during the decision-making process when understanding of the situation and the time and cognitive power needed to make the decision is limited (bounded rationality). 

Fast and Frugal Cognitive Heuristics

People use the popularity of an idea to inform what kind of content they select. It is a continuous cycle in which people see a post has many likes, so they share it, garnering more likes.

Bandwagon Heuristic

When people equate the popularity of ideas to the quality of the ideas. People are more willing to adopt what their peers have deemed as valuable.

Endorsement Heuristic

Working backwards is a problem-solving heuristic where an individual starts with the desired final outcome and works in reverse to determine the necessary steps to achieve it. This method is frequently applied in everyday planning, often without conscious thought.

Working Backwards

The availability heuristic is a mental shortcut where individuals make decisions based on information that is most easily recalled, such as a recent experience or a vivid example. This reliance on readily available information can lead to flawed judgments, as the most accessible information is not always the most representative or accurate for making a sound decision.

Availability Heuristic

System 1 often substitutes hard-to-answer questions with easier ones (without the awareness of system 2).  

Substituting Questions (Heuristic Questions)

The task decomposition heuristic is a problem-solving strategy that involves breaking down a large or complex goal into a series of smaller, more manageable steps. This approach makes overwhelming tasks feel more achievable. It also helps in identifying errors and separating known elements from unknown ones, a technique famously used by physicist Enrico Fermi.

Task Decomposition Heuristic

After watching extensive news coverage of a rare but dramatic lottery win in their city, a person starts spending a significant portion of their income on lottery tickets. Despite statistical evidence showing the odds are astronomically low, the vivid, recent example of a winner makes the possibility feel much more likely. Which mental shortcut best explains this person's change in behavior?

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