Related Experiment Video
Updated: Apr 5, 2026

Experimental Paradigm for Measuring the Effect of Induced Emotion on Grammar Learning
Published on: January 29, 2020
Origins of the Arden Syntax
George Hripcsak1, Ove B Wigertz2, Paul D Clayton3
1Department of Biomedical Informatics, Columbia University, 622 W 168th Street, PH20, New York, NY 10032, USA; Medical Informatics Services, NewYork-Presbyterian Hospital, 622 W 168th Street, PH20, New York, NY 10032, USA.
The Arden Syntax, developed in the 1980s, standardizes medical logic rules for knowledge-based systems. This enables sharing clinical decision support, like alerts, across institutions.
Area of Science:
- Medical Informatics
- Computer Science
Background:
- The Arden Syntax emerged in the 1980s to address the challenge of replicating knowledge-based systems.
- It draws from Health Evaluation through Logical Processing (HELP) and Regenstrief Medical Record System (RMRS).
Observation:
- The syntax was designed for clinician readability and powerful array processing, inspired by the APL programming language.
- It was first vetted at a 1989 informatics retreat at Arden Homestead.
Findings:
- Arden Syntax allows medical logic to be encoded as independent rules, facilitating a public library of clinical decision support tools.
- The syntax underwent improvements and implementations by researchers and vendors in the early 1990s.
Implications:
- Initial adoption by the American Society for Testing and Materials signifies its role as a consensus standard.
- The Arden Syntax promotes interoperability and the widespread application of clinical decision support rules.
Related Concept Videos
Language Development
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
Components of Language
Nucleophilic Aromatic Substitution of Aryldiazonium Salts: Aromatic SN1
In the Sandmeyer reaction, for example, the diazonio group is replaced by a chloro, bromo,...
Nomenclature of Aryl and Heterocyclic Amines
Nomenclature of Alkynes
Directional Terms

