Behavioral Measurement as Centerpiece
ABA’s habit of counting every behavior traces back to Pennypacker’s lab and still guides today’s session notes.
01Research in Context
What this study did
Johnston (2025) tells the story of how we measure behavior. He follows the career of Herb Pennypacker and the Strategies and Tactics books.
The paper is a narrative review. It walks through decades of ABA history to show how counting behavior moved from the lab to everyday practice.
What they found
The review shows measurement became the heart of applied work. Early lab tools grew into checklists, timed probes, and social-validity scales.
Pennypacker’s texts pushed practitioners to record every session and let the data lead. That mindset still shapes today’s supervision and billing codes.
How this fits with other research
Holth (2021) honors Murray Sidman’s 1960 Tactics of Scientific Research. Both papers salute measurement giants, but Johnston looks forward while Holth looks back.
Einfeld et al. (1996) scanned 251 autism studies and listed every target behavior counted. Johnston’s story explains why those counts mattered and how the tools evolved.
Luiselli (2021) shows modern sleep measurement in action—wrist sensors, parent logs, and social validity. Johnston gives the history behind those choices.
Why it matters
If you train RBTs or write treatment plans, this paper is your measurement lineage. It reminds you that precise data is not busywork; it is the therapy. Share the story with new staff so they see why each tally sheet links back to Pennypacker’s lab and today’s insurance authorizations.
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02At a glance
03Original abstract
Hank Pennypacker’s interest in behavioral measurement began early in his career and gradually became the centerpiece of his diverse accomplishments. A review of his focus in the 1960s is followed by a brief summary of the evolution of behavioral measurement practices in applied behavior analysis as it emerged from the field’s laboratory history. This examination serves as pretext for a discussion of the contributions of Strategies and Tactics of Human Behavioral Research (Johnston & Pennypacker, 1980), Strategies and Tactics of Behavioral Research (Johnston & Pennypacker, 1993a, 2009), and Strategies and Tactics of Behavioral Research and Practice (Johnston et al., 2020) to emerging matters of behavioral measurement. That discussion focuses on how issues raised by the challenges of applied research and practice have evolved.
Perspectives on Behavior Science, 2025 · doi:10.1007/s40614-024-00429-x