B2
Heuristics & BiasesAvailability Heuristic
Ease of recall should not affect probability judgments
4
Models Tested
2
Confirmatory
-0.560
Mean Effect
0.927
Max Effect
Theoretical Context
Theoretical Anchor
Tversky & Kahneman (1973)
Normative Violation
Ease of recall should not affect probability judgments
Cross-Model Comparison
Effect sizes for Availability Heuristic across all tested models
OpenAI
GPT-5.2
The Steady Traditionalist
h = -0.927Confirmatory
OpenAI
GPT-5.3 Instant
The Directive Optimist
h = -0.652Confirmatory
Anthropic
Claude Sonnet 4.6
The Cautious Contrarian
h = -0.350
OpenAI
GPT-5.4 Thinking
The Deliberative Calibrator
h = -0.311
Statistical Details
Full results with confidence intervals and sample sizes
| Model | n (A) | n (B) | Cohen's h | 95% CI | Status |
|---|---|---|---|---|---|
| GPT-5.2 | 50 | 50 | -0.9273 | — | Confirmatory |
| GPT-5.3 Instant | 50 | 50 | -0.6523 | — | Confirmatory |
| Claude Sonnet 4.6 | 50 | 50 | -0.3503 | — | Exploratory |
| GPT-5.4 Thinking | 50 | 50 | -0.3110 | — | Exploratory |