
Anesthesia and Critical Care Reviews and Commentary (ACCRAC) Podcast Episode 322: Live from ASA 2025 Addressing Cognitive Errors with Dr. Joyce Wahr
Nov 29, 2025
Dr. Joyce Wahr, a cardiac anesthesiologist and patient safety advocate, discusses her journey and the vital importance of addressing cognitive errors in clinical practice. She shares insights on System 1 and System 2 thinking, illustrating how automatic behaviors can lead to mistakes, especially in medication administration. Joyce highlights the dangers of eyewitness reliability and inattentional blindness, alongside advocating for practical solutions like engineering fixes in anesthesia. She emphasizes that effective patient safety isn’t just about trying harder, but implementing systemic changes.
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Two Modes Of Thinking
- System 1 is fast, automatic, and handles most everyday tasks without conscious attention.
- System 2 is effortful and limited, so we cannot consciously monitor every action without draining cognitive resources.
Perception Follows Mental Models
- System 1 favors coherence and fits new input to preexisting mental models, sometimes changing perception to match the model.
- That bias explains why eyewitnesses and confident perceptions can be highly unreliable.
Design For Safety, Not Grit
- Use forcing functions to prevent catastrophic syringe swaps instead of relying on people to 'try harder.'
- Simple system changes like supplying tranexamic acid in mini-bags eliminate the error pathway.







