About

About Leverlore

Built by a BCBA, for students learning the experimental analysis of behavior.

Leverlore is a virtual operant chamber. You name a rat, arrange schedules of reinforcement, and watch the cumulative record build in real time. Version 2 adds motivating operations, reinforcer magnitude and quality, delays, response effort, two-lever choice with a live matching plot, and a Practice section with quizzes, mystery schedules and a timed exam.

Who made it

Leverlore was designed and built by a Board Certified Behavior Analyst. It is original work: the art, text, code and behavior engine were written from scratch, guided by published quantitative models of operant behavior.

What it is, and what it is not

• A teaching simulation. The rat’s behavior comes from models such as the matching law, mathematical principles of reinforcement and hyperbolic discounting. It is not real animal data.
• A free demo: no account, no payment, nothing to install.
• Private by design. Your rat, progress and scores are saved only in this browser (local storage). Nothing is uploaded.
• Content-area tags align with the BCBA Test Content Outline (6th ed.) as a study aid. Not affiliated with or endorsed by the BACB.

Type and icons

Set in Fraunces, IBM Plex Sans and IBM Plex Mono (SIL Open Font License). Interface icons from Lucide (ISC License). The chamber, rat and emblem were drawn for this project.