pjt222/agent-almanac · i18n/caveman-lite/skills/fit-drift-diffusion-model/SKILL.md

fit-drift-diffusion-model skillA

fit-drift-diffusion-model is agent-read markdown (skill) from pjt222/agent-almanac: Fit cognitive drift-diffusion models (Ratcliff DDM) to reaction time and accuracy data with parameter estimation (drift rate, boundary separation, non-decision time), model comparison, and parameter recovery validation. Use when modeling binary decision-making with reaction time data, estimating cognitive parameters from experimental data, comparing sequential sampling model variants, or decomposing speed-accuracy tradeoff effects into latent cognitive components..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add pjt222/agent-almanac/fit-drift-diffusion-model@v1.0
Exact content
mdr add pjt222/agent-almanac/fit-drift-diffusion-model@sha256:1b5ff9116e31c15c

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_iksc7hzsiuy34vqq.svg)](https://markdownregistry.com/a/art_iksc7hzsiuy34vqq)

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Versions

versioncommittedcommitsizeaudit
v1.0 latest2026-08-10 cdae1a5 15,807 BA view · diff
v1.02026-08-10 9fbe599 15,805 BA view · diff
v1.02026-06-05 75ded7a 15,820 BA view · diff
v1.02026-04-24 0b91b04 15,867 BA view · diff
v1.02026-04-19 e334ebd 15,922 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (15807 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

pjt222/agent-almanac · 33 stars · license MIT · pushed 2026-09-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_iksc7hzsiuy34vqq
GET https://markdownregistry.com/api/v1/resolve?ref=pjt222/agent-almanac/fit-drift-diffusion-model
GET https://markdownregistry.com/api/v1/blob/1b5ff9116e31c15c045a1275036c99a2bf64b2853e0a5ecc2a5c17239c38b71f

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.