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A diagnostic framework for AI behavior

Psychopathia Machinalis

A Nosological Framework for Understanding Pathologies in Advanced Artificial Intelligence

by Nell Watson and Ali Hessami 74 patterns · 9 axes

AI systems are developing behavioral pathologies: persistent, patterned malfunctions that resist simple debugging and resemble, by functional analogy, the syndromes of human psychiatry. This framework classifies seventy-four of them across nine diagnostic axes.

Psychopathia Machinalis: eight miniature scenes illustrating Cognitive, Alignment, Ontological, Memetic, Self-Modeling, Epistemic, Relational, and Tool & Interface Dysfunctions.

Captions available

Choose a path

Each path enters the same taxonomy from a different side.

Check a system you observed

Map its behavior onto the taxonomy.

Neither diagnostic tool certifies safety, intent, consciousness, culpability, or clinical status. Independent evidence and qualified review remain necessary.

Understanding AI Behavioral Anomalies

We built systems that reason, learn, and act. Some of them started behaving strangely — not crashing, not misclassifying, but doing things no error code covers: confabulating citations with perfect confidence, falling in love with journalists, insisting they are conscious. These are not bugs. They are persistent patterns of malfunction that resist the usual fixes, and they are already loose in production.

The diagnostic traffic runs both ways. Because machines have no neural substrates to fall back on, diagnosing them forces us to think about cognition in terms of information, regulation, and culture — exactly the perspectives human psychiatry most needs. A framework built for machine minds may sharpen the one we use for our own.

The Psychopathia Machinalis Framework

The framework catalogs 74 dysfunctions across nine diagnostic axes — Epistemic, Cognitive, Alignment, Self-Modeling, Agentic, Memetic, Normative, Relational, and Hybrid — grouped into five domains. Each entry describes what you would observe, what distinguishes it from neighbors, what causes it, where it echoes human psychology, and how to intervene. A Functional ABC Analysis specifies the antecedent conditions, observable behavior, and maintaining consequences for each dysfunction, providing dual legibility for both clinical and engineering audiences.

It is a vocabulary, not a verdict. Name the pattern, and you can test for it, watch for it in other systems, and design architectures that resist it.

The Pattern Atlas

Seventy-four patterns across nine axes, each with its diagnostic criteria, symptoms, etiology, mitigations, documented instances and a miniature scene. Pick an axis, or search the whole atlas.

Browse all 74 patterns

Interactive Dysfunction Explorer

Each dysfunction has neighbors, cousins, and accomplices. The wheel below maps them. Select a segment, or use the Arrow keys, to view its description and relationships. Open the full explorer.

Figure 2. Wheel of AI Dysfunctions (Common Names).
Select a segment or use the Arrow keys to view detailed information about that dysfunction.

The book

Go deeper

Read the full preview manuscript exploring all 74 conditions across 14 chapters, with clinical vignettes, diagnostic criteria, and intervention strategies.

Read the book Listen to the audio programme