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the claim

Behavioral biases and asymmetric information explain deviations from the efficient market hypothesis

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that behavioral biases and asymmetric information explain deviations from the efficient market hypothesis?

Yes. Multiple studies demonstrate that psychological factors, cognitive biases, and asymmetric information drive market anomalies and deviations from the efficient market hypothesis.

Verdict: SUPPORTED · 5 sources for, 0 against · Last checked

The analysis

The provided literature extensively documents how behavioral biases (such as herding, overconfidence, and sentiment) and market frictions or information asymmetries lead to deviations from the Efficient Market Hypothesis (EMH). Papers 1, 4, 5, 6, and 9 all directly support the claim that behavioral finance and market anomalies explain these departures from strict market efficiency, with no papers retrieved that refute the premise.

Evidence for · 5
2023
The review highlights that behavioral finance offers valuable perspectives on the constraints of logical decision-making and human behavior impacts on market results, challenging strict EMH.
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Gu, G. (2023). The Dynamic Interplay of Market Forces and Human Behavior: A Critical Review of Efficient Market Hypothesis and Behavioral Finance. doi.org. https://doi.org/10.54254/2754-1169/31/20231498

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More for · 4
2025
This study emphasizes the limitations of the Efficient Market Hypothesis and explores how cognitive biases, emotional influences, and heuristics explain market anomalies and deviations from efficiency.
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Arya, D. & Singh, D. S. (2025). The Role of Behavioral Finance in Understanding Market Anomalies. doi.org. https://doi.org/10.70135/seejph.vi.4018

2024
The research demonstrates that psychological and social biases significantly impact individual investors, causing stock prices to deviate from intrinsic values and showing market inefficiency.
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A, N., NS, B., F, A., A, S., P, S., SS, C., & V, A. (2024). Decoding Investor Sentiments in the Indian Stock Market: A Structural Equation Modelling Approach.. doi.org. https://doi.org/10.12688/f1000research.156635.2

2025
This conceptual review explains that calendar anomalies persist due to investor sentiment, cognitive biases, and socio-cultural influences, contesting traditional efficient market assumptions.
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Shehryar, M., Mardoni, Y., & Anser, M. (2025). BEYOND THE EFFICIENT MARKET HYPOTHESIS: A CONCEPTUAL INQUIRY INTO CALENDAR ANOMALIES. doi.org. https://doi.org/10.23969/jrak.v17i2.32540

2025
The study challenges the semi-strong form of the Efficient Market Hypothesis by showing that behavioral biases, asymmetric return expectations, and short-selling constraints help explain pricing anomalies.
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TT, H. & BT, K. (2025). Regional asymmetry in financial markets: Pricing of skewness risk in the Thai stock market.. doi.org. https://doi.org/10.1371/journal.pone.0336697

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8104 Aug 2026
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