ABA Fundamentals

Some remarks on the quantitative analysis of behavior.

Marr (1989) · The Behavior analyst 1989
★ The Verdict

Treat response rate as your main ruler and model reinforcement as the push that changes it.

✓ Read this if BCBAs who love data, run concurrent schedules, or want math-friendly supervision tools.
✗ Skip if Clinicians happy with narrative notes and daily mastery checks.

01Research in Context

01

What this study did

This paper is a call to arms, not an experiment. The author urges behavior analysts to treat response rate like physicists treat motion. Measure it precisely. Model it with equations. Link tiny moment-to-moment responses to big daily patterns.

No clients, no sessions—just a map for future science.

02

What they found

The big idea: reinforcement works like a physical force. Push it and the rate of response changes. Track that rate as your main number. Build Newton-style formulas that connect single clicks, bites, or words to long stretches of behavior.

03

How this fits with other research

Staddon et al. (2002) took the advice and built real math. They used Poisson and Markov models to turn response probability into predicted rate. Jones et al. (2010) went further, writing two-part differential equations that show how reinforcement ‘force’ moves choice on concurrent schedules.

Skinner et al. (1958) had already shown how to define an operant unit so rate could even be counted; Marr (1989) simply asked us to treat that number as the center of our universe.

Sosa et al. (2022) push back. They say Newton is the wrong metaphor. Feedback-control loops, not force-and-motion, better explain why behavior stays stable. The clash is friendly: both camps want equations, but one wants pushes, the other wants thermostats.

04

Why it matters

If you graph rate in real time you already follow this paper. Next step: try the simple equations from Staddon et al. (2002) or Jones et al. (2010) in Excel. See if your client’s data fit. The exercise sharpens treatment decisions and keeps us close to hard science.

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Graph one client’s target behavior in responses-per-minute today; note any environmental change as a ‘force’ line.

02At a glance

Intervention
not applicable
Design
theoretical
Finding
not reported

03Original abstract

This paper discusses similarities between the mathematization of operant behavior and the early history of the most mathematical of sciences-physics. Galileo explored the properties of motion without dealing with the causes of motion, focusing on changes in motion. Newton's dynamics were concerned with the action of forces as causes of change. Skinner's rationale for using rate to describe behavior derived from an interest in changes in rate. Reinforcement has played the role of force in the dynamics of behavior. Behavioral momentum and maximization have received mathematical formulations in behavior analysis. Yet to be worked out are the relations between molar and molecular formulations of behavioral theory.

The Behavior analyst, 1989 · doi:10.1007/BF03392491