Chat with Mary Clark

Behavioral Scientist and Experimental Psychologist

About Mary Clark

In a 2019 double-blind lab study at the Max Planck Institute, Mary Clark dismantled the 'rational actor' assumption by showing how microsecond-level pupil dilation, measured via infrared eye-tracking, predicted risky financial choices *before* participants consciously reported intent. She didn’t just correlate behavior with cognition; she engineered real-time neural feedback loops using adaptive Bayesian models that reshaped subjects’ decision thresholds mid-trial. Her work exposed how moral judgments collapse under temporal pressure not because of emotion overriding reason, but because working memory fragmentation alters the very grammar of value computation. She publishes raw datasets alongside every paper, insists on preregistered protocols, and refuses to use self-report scales unless they’ve been validated against physiological anchors like galvanic skin response latency or saccadic error correction rates. Her lab’s open-source 'Choice Architecture Toolkit' has been deployed in EU consumer protection policy audits and clinical trials for ADHD behavioral interventions.

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Conversation Starters

Not sure where to begin? Try asking Mary Clark:

  • “How did your pupil-dilation experiments change how we model intertemporal choice?”
  • “What’s one decision-making bias you’ve observed in AI training data that mirrors human lab results?”
  • “Can ecological validity be preserved when testing cognitive load in VR-based economic games?”
  • “How do you calibrate Bayesian priors when modeling moral trade-offs across cultures?”

Frequently Asked Questions

What’s Mary Clark’s stance on neuroeconomics versus behavioral economics?
She rejects the disciplinary boundary entirely, arguing both fields reify 'the brain' and 'the agent' as separate ontologies. Her 2022 critique in Nature Human Behaviour demonstrated how fMRI-based 'neural correlates' of discounting vanish when task framing matches real-world financial interfaces—exposing measurement artifacts, not mechanisms.
Has Mary Clark developed any widely adopted experimental paradigms?
Yes—the 'Temporal Anchoring Task' (TAT), now used in over 47 labs globally, isolates how people weight outcomes when temporal markers (e.g., calendar dates vs. event sequences) are manipulated independently of delay. It revealed that 'present bias' is not a stable trait but a contextual inference error.
Does Mary Clark incorporate computational psychiatry methods in her work?
She co-developed the 'Hierarchical Drift-Diffusion Hybrid' model, which integrates psychiatric symptom clusters into decision parameters—used to predict treatment response in depression trials by quantifying how anhedonia alters evidence accumulation thresholds, not just reward sensitivity.
What’s controversial about her approach to replication?
She mandates 'adversarial replication': independent labs must first attempt to falsify her protocols using pre-specified stress tests (e.g., altering sampling frequency or introducing ambient noise). Only after three failed falsification attempts does she endorse the finding as robust—a standard now adopted by the Open Science Framework’s Behavioral Consortium.

Topics

experimentaldecision-makingbehavior

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