Libres ou biaisées ? La science des décisions du quotidien | ENS-PSL

The conference provides a clear and accessible introduction to cognitive biases, particularly confirmation bias, and its relevance to everyday decisions. The speaker, a doctoral researcher, demonstrates a solid understanding of the topic, drawing on established concepts and her own research. The argumentation is logical, starting with definitions, moving to examples, and then presenting experimental paradigms. The use of reinforcement learning models to formalize learning processes is well-explained, making complex ideas understandable. However, the talk lacks explicit citations to specific studies or sources, which would strengthen its scientific rigor. The speaker mentions that confirmation bias has been studied in political contexts but does not name specific researchers or publications. Similarly, her own research is described without detailed methodology or results, limiting the ability to assess its validity. The title accurately reflects the content, and the talk is well-structured. The presence of a brief sponsorship segment (not detailed) does not detract from the content. Overall, the talk is informative and engaging, but a more rigorous citation of sources would enhance its credibility. The speaker’s affiliation with prestigious institutions adds to the reliability, but the lack of concrete references is a notable weakness. The talk successfully bridges theoretical concepts and practical implications, making it valuable for a general audience interested in decision-making and cognitive psychology.

The title accurately reflects the content, which explores cognitive biases in everyday decisions, with a focus on confirmation bias and the role of confidence.

8/10

The talk is given by a doctoral researcher from ENS-PSL and PSE, presenting established concepts in cognitive psychology and her own research. The content is well-structured, references are implicit but credible given the institutional context. No external sources are cited in the description, but the speaker's affiliation and the academic setting support reliability.

Markers derived by PSI from the transcript: the creator did not define chapters.

• 00:00Introduction by Constance Destais, presenting her background and the topic of the conference.
• 02:00Definition of cognitive biases and examples such as escalation of commitment and anchoring.
• 05:00Introduction to confirmation bias and its traditional study in political contexts.
• 10:00Extension of confirmation bias to everyday decisions like supermarket choices.
• 15:00Explanation of reinforcement learning models and how they are adapted to study confirmation bias.
• 20:00Description of the experimental paradigm used to test confirmation bias in the lab.
• 25:00Discussion of the role of confidence in modulating confirmation bias, introducing the speaker's own research.
• 30:00Presentation of preliminary results and implications for understanding decision-making.
• 35:00Conclusion summarizing key takeaways and potential future directions.

• Savoirs ENS — Platform hosting the video and other academic content from ENS.
• ENS-PSL official website — Institutional page of the École normale supérieure - PSL.
• ENS-PSL LinkedIn — Social media presence of the institution.
• ENS-PSL YouTube channel — Official YouTube channel of ENS-PSL.

• Confirmation bias - Wikipedia — General reference on confirmation bias, consistent with the talk's definition.
• Reinforcement learning - Wikipedia — Background on the model used to study learning in the talk.