On the current status of the evolutionary theory of behavior dynamics
Darwin-style computer genes can shape fake response rules the same way real genes shape animals.
01Research in Context
What this study did
McDowell (2019) wrote a theory paper. He asked: Can Darwin-style computer rules explain how behavior adapts?
He used fake genes inside a computer. The genes stood for response rules. The fittest rules lived and had baby rules.
What they found
The model kept picking rules that made more rewards happen. The fake genes slowly built a steady pattern of good moves.
The paper says this trick gives one clean story for all adaptive acts.
How this fits with other research
Kubina (2021) took the same engine and aimed it at Precision Teaching. She said you can watch fluency grow without doing a full FA. The two papers share the engine; Kubina just drives it down a narrower track.
Baum (2020) tells a different tale. He thinks aversive events induce avoidance in one shot. No slow gene-like steps. The papers clash on speed: McDowell needs many cycles; Baum needs one scary moment.
Gde Jonge et al. (2025) split the middle. They say every reinforcer also induces new responses right away. Their view lets both fast induction and slow selection live side-by-side.
Why it matters
You now have three levers. When a client stalls, ask: Is this a slow-fit problem that needs lots of trials and tiny steps? Or is it a one-shot induction that will vanish if I block the trigger? Try the fast test first—remove or add one event and watch. If nothing shifts, move to the slow engine: run timed fluency drills and let the data breed better moves.
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Run a one-minute timing, save the chart, and let the learner try again tomorrow—let the best performance survive.
02At a glance
03Original abstract
The evolutionary theory of behavior dynamics is a complexity theory that instantiates the Darwinian principles of selection, reproduction, and mutation in a genetic algorithm. The algorithm is used to animate artificial organisms that behave continuously in time and can be placed in any experimental environment. The present paper is an update on the status of the theory. It includes a summary of the evidence supporting the theory, a list of the theory's untested predictions, and a discussion of how the algorithmic operations of the theory may correspond to material reality. Based on the evidence reviewed here, the evolutionary theory appears to be a strong candidate for a comprehensive theory of adaptive behavior.
Journal of the Experimental Analysis of Behavior, 2019 · doi:10.1002/jeab.495