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Optimism_Bias
Pessimism_Bias
Emotional State: Depression/Anxiety levels (Depressive Realism)
When user shows signs of depression or anxiety, flip Optimism to Pessimism
Pessimism_Bias
Optimism_Bias
Emotional State: Low depression/anxiety, positive mood
When user shows positive mood and low anxiety, flip Pessimism to Optimism
Neophilia
Status_Quo_Bias
Personality Trait: Openness to Experience (Big Five)
Low openness β†’ Status Quo Bias; High openness β†’ Neophilia
Status_Quo_Bias
Neophilia
Personality Trait: Openness to Experience (Big Five)
High openness β†’ Neophilia; Low openness β†’ Status Quo Bias
Gamblers_Fallacy
Hot_Hand_Fallacy
Perception of Agency: Random (Gambler's) vs. Skill-based (Hot Hand)
Perceived randomness β†’ Gambler's Fallacy; Perceived skill β†’ Hot Hand Fallacy
Hot_Hand_Fallacy
Gamblers_Fallacy
Perception of Agency: Random (Gambler's) vs. Skill-based (Hot Hand)
Perceived skill β†’ Hot Hand Fallacy; Perceived randomness β†’ Gambler's Fallacy
Spotlight_Effect
Illusion_of_Transparency
Focus: External/Behavioral vs. Internal/Mental state
Focus on external attention β†’ Spotlight Effect; Focus on internal thoughts β†’ Illusion of Transparency
Illusion_of_Transparency
Spotlight_Effect
Focus: External/Behavioral vs. Internal/Mental state
Focus on internal thoughts β†’ Illusion of Transparency; Focus on external attention β†’ Spotlight Effect
Halo_Effect
Horns_Effect
Valence: Initial impression positive vs. negative
Positive initial impression β†’ Halo Effect; Negative initial impression β†’ Horns Effect
Horns_Effect
Halo_Effect
Valence: Initial impression positive vs. negative
Negative initial impression β†’ Horns Effect; Positive initial impression β†’ Halo Effect
Overconfidence_Effect
Hard_Easy_Effect
Task Difficulty: Overconfident on hard tasks, underconfident on easy tasks
Hard tasks β†’ Overconfidence; Easy tasks β†’ Underconfidence (Hard-Easy Effect)
Hard_Easy_Effect
Overconfidence_Effect
Task Difficulty: Overconfident on hard tasks, underconfident on easy tasks
Easy tasks β†’ Underconfidence; Hard tasks β†’ Overconfidence
Self_Serving_Bias
Impostor_Syndrome
Self-Esteem: High self-esteem vs. Low self-esteem
High self-esteem β†’ Self-Serving Bias; Low self-esteem β†’ Impostor Syndrome
Negativity_Bias
Positivity_Effect
Emotional State: Threat detection vs. Emotion regulation
Threat-focused β†’ Negativity Bias; Emotion regulation β†’ Positivity Effect
Positivity_Effect
Negativity_Bias
Emotional State: Threat detection vs. Emotion regulation
Emotion regulation β†’ Positivity Effect; Threat-focused β†’ Negativity Bias
Impostor_Syndrome
Self_Serving_Bias
Self-Esteem: Low self-esteem vs. High self-esteem
Low self-esteem β†’ Impostor Syndrome; High self-esteem β†’ Self-Serving Bias

Cognitive Biases

123 cognitive biases unified from 5 production data sources, plus 17 mechanisms, 24 synonym groups, and 16 antonym pairs as separate configs.

Quick Start

from datasets import load_dataset

# Main bias entries
biases = load_dataset("buley/cognitive-biases", "biases")

# Supporting data
mechanisms = load_dataset("buley/cognitive-biases", "mechanisms")
synonyms = load_dataset("buley/cognitive-biases", "synonyms")
antonyms = load_dataset("buley/cognitive-biases", "antonyms")

Configs

Config Records Description
biases 123 Unified bias entries with source provenance
mechanisms 17 Cognitive heuristics that generate derivative biases
synonyms 24 Synonym/alias groups mapping alternative names
antonyms 16 Antonym pairs with flipping mechanisms

Bias Sources

Each bias entry has a source field indicating provenance:

Source Description
definition Full definitions with domains, System 1/2, observable markers
mechanism_derivative Derived from cognitive mechanisms (heuristics)
synonym_alias Alternative names linked to primary biases
antonym Bias poles with flipping mechanisms

4-Domain Classification

Domain Description
TOO_MUCH_INFO Information filtering and overload
NOT_ENOUGH_MEANING Pattern-finding and meaning-making
NEED_TO_ACT_FAST Decision-making shortcuts
WHAT_TO_REMEMBER Memory formation and recall

Use Cases

  • Cognitive bias detection in text
  • Decision support and debiasing tools
  • Educational and training applications
  • Research on judgment and decision-making

Citation

@dataset{buley_cognitive_biases_2026,
  author = {Taylor Buley},
  title = {Cognitive Biases: 123 Biases with Mechanisms, Synonyms & Antonyms},
  year = {2026},
  publisher = {HuggingFace},
  url = {https://huggingface.co/datasets/buley/cognitive-biases},
  license = {CC BY 4.0}
}

License

Creative Commons Attribution 4.0 International (CC BY 4.0)

You are free to share and adapt this dataset for any purpose, even commercially, as long as you give appropriate credit.

About

Published by AFFECTIVELY Β· Managed by @buley

AFFECTIVELY transforms high-entropy emotional experiences into low-entropy, actionable insights through technical mindfulness.

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