Knowledge Tree
confirmation bias
Also known as: confirmation biases
Facts (43)
Sources
Biases in Behavioral Finance - World Scholars Review worldscholarsreview.org Sep 15, 2024 9 facts
referenceM. Cipriano and T. Gruca published a 2015 study in The Journal of Prediction Markets titled 'The Power of Priors: How Confirmation Bias Impacts Market Prices,' which analyzes the impact of confirmation bias on market pricing.
claimLegoux et al. (2014) demonstrated that financial experts are susceptible to confirmation bias.
referenceJaeHong, Prabhudev, Bin, Alok, and Rajagopal (2010) published 'Confirmation Bias, Overconfidence, and Investment Performance: Evidence from Stock Message Boards', which examines the impact of confirmation bias and overconfidence on investment performance using data from stock message boards.
claimJaeHong et al. (2010) showed that investors are more likely to overstate their investment judgment and engage in excessive trading due to confirmation bias.
referenceLegoux, Pierre-Majorique, and Boyer (2014) investigated the presence of confirmation biases in the financial analysis of IT investments.
claimConfirmation bias is defined as the tendency to interpret new evidence as confirmation of one's existing beliefs or theories.
referenceZaleśkiewicz, T., Gasiorowska, A., Stasiuk, K., Maksymiuk, R., & Bar-Tal, Y. (2016) published 'Lay Evaluation of Financial Experts: The Action Advice Effect and Confirmation Bias' in Frontiers in Physiology, 7.
claimCipriano and Gruca (2015) suggest that widespread confirmation bias can affect market prices, but a diverse investor base can mitigate these effects.
claimCognitive biases, including optimism, anchoring, availability bias, confirmation bias, and overconfidence bias, originate from errors in logical thinking.
The Impact of Cognitive Biases on Professionals' Decision-Making frontiersin.org 9 facts
claimConfirmation bias is the tendency for people to seek and interpret evidence in ways that are partial to their existing beliefs and expectations.
claimLidén et al. (2019) demonstrated that judges' detention of suspects triggers a confirmation bias that influences their assessment of guilt, specifically causing judges to perceive detained defendants' statements as less trustworthy and increasing the likelihood of conviction when the judge personally decided on the detention compared to when a colleague did.
claimConfirmation bias is the tendency to search for, interpret, favor, and recall information that confirms or supports one's prior personal beliefs, as defined by Nickerson (1998).
referencePeer and Gamliel (2013) reviewed how cognitive biases intervene in the judicial process, specifically confirmation and hindsight bias during hearings, the inability to ignore inadmissible evidence during rulings, and anchoring effects during sentencing.
referenceResearch in the field of law regarding cognitive biases includes studies by Berlin and Hendrix (1998) (hindsight bias, narrative), Bystranowski et al. (2021) (anchoring effect, review), Casper et al. (1989) (hindsight bias, empirical), Chapman and Bornstein (1996) (anchoring effect, empirical), Cheney et al. (1989) (hindsight bias, empirical), Englich et al. (2005) (anchoring effect, empirical), Englich et al. (2006) (anchoring effect, empirical), Enough and Mussweiler (2001) (anchoring effect, empirical), Findley and Scott (2006) (confirmation bias, theoretical), Guthrie et al. (2001) (empirical), Guthrie et al. (2007) (empirical), Guthrie et al. (2002) (narrative), Harley (2007) (hindsight bias, review), Hastie et al. (1999) (anchoring effect, empirical), Helm et al. (2016) (empirical), Hinsz and Indahl (1995) (anchoring effect, empirical), Kamin and Rachlinski (1995) (hindsight bias, empirical), LaBine and LaBine (1996) (hindsight bias, empirical), Lidén et al. (2019) (confirmation bias, empirical), O’Brien (2009) (confirmation bias, empirical), Oeberst and Goeckenjan (2016) (hindsight bias, review), Peer and Gamliel (2013) (narrative), Rachlinski and Wistrich (2017) (narrative), Rachlinski (2018) (framing effect, empirical), Rachlinski et al. (2011) (hindsight bias, empirical), Rachlinski et al. (2015) (anchoring effect, empirical), and Robbennolt and Studebaker (1999) (anchoring effect, empirical).
measurementResearch by Rachlinski et al. (2013) reported that 90% of judges solve the Wason task incorrectly, though this does not necessarily imply that confirmation bias affects their regular professional work.
claimAnchoring, hindsight bias, and confirmation bias are documented as affecting judicial decision-making.
claimConfirmation bias may impact professional judges' decisions, particularly in the context of criminal investigations.
claimWhile reliable measures exist for approximately a dozen cognitive biases, measures for key biases such as confirmation bias and availability bias are currently lacking.
5 Behavioral Biases That Can Impact Your Investing Decisions online.mason.wm.edu Feb 5, 2025 8 facts
claimConfirmation bias leads investors to focus primarily on information that supports their existing beliefs while dismissing contradictory evidence, creating a feedback loop that reduces the perceived need to question mental accounting processes.
procedureTo help clients develop strategies for overcoming confirmation bias, financial professionals recommend the following steps: (1) actively seeking contrary viewpoints about desired investments, (2) challenging assumptions about historical trends, (3) conducting thorough research that includes opposing perspectives, (4) asking open-ended questions rather than seeking simple validation, and (5) regularly reviewing investment performance against objective benchmarks.
claimConfirmation bias can cause institutional investors and individual traders to miss opportunities to enhance their financial well-being by ignoring objective market data.
claimConfirmation bias leads investors to focus primarily on information that supports their existing beliefs while dismissing contradictory evidence.
claimConfirmation bias becomes particularly problematic during periods of financial crisis because investors seek information that confirms their existing positions rather than adapting to changing market conditions.
claimConfirmation bias creates a comfortable feedback loop that reduces the perceived need for investors to question their mental accounting processes.
referenceThe article '5 Behavioral Biases That Can Impact Your Investing Decisions' cites Investopedia for behavioral finance and confirmation bias, Schwab Asset Management for overconfidence and herd mentality biases, Mirae Asset Mutual Fund for loss aversion bias, and SmartAsset for anchoring bias.
claimConfirmation bias negatively impacts personal finances and investment outcomes because institutional investors and individual traders may miss opportunities to enhance financial well-being by ignoring objective market data, especially during periods of financial crisis when investors seek information that confirms existing positions.
Medical Hallucination in Foundation Models and Their ... medrxiv.org Mar 3, 2025 4 facts
claimMedical Large Language Models (LLMs) exhibit confirmation bias when a model's response aligns too closely with a user's implied hypothesis, causing the model to neglect contradictory evidence.
claimAnchoring bias in clinical practice involves relying excessively on initial impressions even when new evidence suggests alternative explanations; confirmation bias involves the selective acceptance of data that reinforces a working diagnosis; and availability bias skews judgments toward diagnoses that are more memorable or recently encountered.
claimTechniques for reducing anchoring and confirmation bias in clinical settings, such as prompting systematic consideration of differential diagnoses, may inform prompt design or chain-of-thought strategies in Large Language Models, according to Wang and Zhang (2024b).
claimCognitive biases in medical practice, such as anchoring bias, confirmation bias, and availability bias, are systematic errors in judgment and reasoning that cause clinicians to deviate from optimal decision-making, often in high-stress or time-constrained environments.
The Influence of Behavioral Biases on Investment Decisions jmsr-online.com Jul 8, 2025 3 facts
referenceThe conceptual model of retail investor psychology identifies a feedback loop consisting of market gains or losses, emotional reactions (such as regret or confirmation bias), and the reinforcement of existing biases.
claimIn social investing ecosystems such as Reddit, YouTube, and online trading platforms, the selective sharing of success and concealment of losses influences collective sentiment and reinforces cognitive biases like confirmation bias, overconfidence, and herding.
claimConfirmation bias leads investors to seek, interpret, and remember information that confirms their pre-existing beliefs while discounting contradictory evidence, a phenomenon that is particularly potent in digital communities where influencers reinforce shared narratives.
Medical Hallucination in Foundation Models and Their Impact on ... medrxiv.org Nov 2, 2025 2 facts
claimConfirmation bias in Large Language Models (LLMs) occurs when a model's response aligns too closely with a user's implied hypothesis, resulting in the neglect of contradictory evidence.
claimConfirmation bias in clinical practice involves the selective acceptance of data that reinforces a working diagnosis.
Social Epistemology - Stanford Encyclopedia of Philosophy plato.stanford.edu Feb 26, 2001 1 fact
referenceNathan Gabriel and Cailin O'Connor authored 'Can Confirmation Bias Improve Group Learning?', published in Philosophy of Science in 2024.
5 common behavioural investing biases - ATB Financial atb.com 1 fact
claimConfirmation bias is the tendency to seek or interpret information in a manner that supports pre-established views on a decision or topic. For example, an investor who believes a specific oil company is a great investment may only seek out information that supports this belief while discrediting information that offers a conflicting view.
Adversarial testing of global neuronal workspace and ... - Nature nature.com Apr 30, 2025 1 fact
claimEmpirical support for theories of consciousness is often highly dependent on methodological choices, which points toward a confirmation bias in theory testing.
Impact of Economic Indicators on Investment Decisions - BI-SAM bi-sam.com Sep 9, 2025 1 fact
claimConfirmation bias leads investors to seek out economic data that supports their existing investment positions.
Behavioral finance: the impact of cognitive biases | EDC Paris ... edcparis.edu Sep 2, 2024 1 fact
claimConfirmation bias is a cognitive bias where investors seek out information that confirms their existing beliefs while ignoring contradictory information.
5 Biases Affecting Your Investment Decisions | Global Credit Union globalcu.org 1 fact
claimFraming bias occurs when the way information is presented influences an investor's opinion, often causing them to seek confirmation of preconceived notions.
Mind Over Money: Behavioral Economics and Financial Decision ... linkedin.com Dec 9, 2024 1 fact
claimConfirmation bias is the tendency for individuals to seek information that confirms their existing beliefs while ignoring contradictory evidence, which can lead to poor investment choices by overlooking critical data.
Behavioral Economics, and How it Affects Your Financial Decisions ... smlny.com Nov 12, 2024 1 fact
claimConfirmation bias is the tendency for individuals to prioritize information that supports their pre-existing beliefs while ignoring contradictory evidence, which can lead investors to overlook risks associated with companies they favor.