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After critical care: Challenges in the transition to inpatient rehabilitation.
Rehabilitation psychology·2016
On Terms: Frequency and Rate in Applied Behavior Analysis.
Charles T Merbitz1,2, Nancy Hansen Merbitz1, Henry S Pennypacker3
11University of Michigan, Ann Arbor, MI USA.
The Behavior Analyst
|January 25, 2020
Summary
In applied behavior analysis (ABA), "frequency" should mean rate (behavior per unit time), not just a count. Avoid using behavior counts without specifying observation time to ensure accurate behavior measurement.
Area of Science:
- Behavioral Science
- Measurement Science
Background:
- The term "frequency" has ambiguous meanings in behavior analysis and statistics.
- In statistics, frequency means count, a definition adopted by some ABA resources.
- Other ABA texts use "frequency" and "rate" interchangeably for behavior per unit time.
Purpose of the Study:
- To clarify the definition of "frequency" in applied behavior analysis (ABA) and behavior measurement.
- To advocate for a standardized definition of "frequency" to improve scientific rigor.
- To recommend best practices for reporting behavioral data.
Main Methods:
- Literature review of definitions and usage of "frequency" in ABA and statistics.
- Analysis of major ABA textbooks and professional guidelines.
- Conceptual analysis of measurement terminology.
Main Results:
- "Frequency" is used as "count" in some major ABA texts and by the Behavior Analyst Certification Board®.
- Other ABA texts equate "frequency" with "rate" (behavior per unit time).
- Current usage leads to potential confusion in behavior measurement.
Conclusions:
- "Frequency" in ABA and behavior measurement should consistently refer to "rate" (behavior per unit time).
- Reporting behavior counts without observation time is discouraged.
- Standardizing the term "frequency" will enhance clarity and accuracy in ABA research and practice.


