ABA Fundamentals

Toward an "Awareness" of the Relationship between Task Performance and Own Verbal Accounts of that Performance.

Hammonds (2006) · The Analysis of verbal behavior 2006
★ The Verdict

People can learn a task yet still be unable to fully describe what they did—so probe verbal behavior separately from performance.

✓ Read this if BCBAs who use self-monitoring or rule-governed programs with teens or adults.
✗ Skip if RBTs running discrete trial drills where verbal explanation is not required.

01Research in Context

01

What this study did

Hammonds (2006) ran lab tasks with college students. The goal was to see if people could learn even when they could not fully explain what they learned.

After each task, the students gave a verbal report. The team compared how well the students did with how complete their words were.

02

What they found

Students mastered the tasks, but their verbal accounts were often patchy. Learning happened even when the words did not match the actions.

The authors say "awareness" is just how much verbal behavior you can emit about the task, not a hidden mind state.

03

How this fits with other research

Lee et al. (2020) extends this idea. They showed that accurate feedback only helps when learners can see their results. If outcomes are hidden, even wrong feedback works, because the learner has no verbal access to judge accuracy.

Domjan (2026) gives historical backup. The review warns that Thorndike's law of effect is often misquoted in our teaching slides. Frank's move to treat "awareness" as verbal behavior fits the same call for conceptual clarity.

Alsop et al. (1995) shows a parallel effect: when reinforcement becomes intermittent, people follow verbal rules less. Together these studies say verbal control is fragile and does not have to line up with actual performance.

04

Why it matters

Do not trust a client's self-report as proof of learning. Probe performance directly, then ask for words second. If a learner can do the skill but cannot explain it, keep teaching the skill and add separate verbal training later. This split keeps your data clean and your program moving.

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After a mastered trial, ask the learner to teach the skill back to you—note gaps between what they do and what they say.

02At a glance

Intervention
not applicable
Design
other
Finding
not reported

03Original abstract

The existence of learning without awareness has been debated for many years. Learning without awareness is said to occur when an individual's behavior has been affected without that individual being aware of the conditions affecting the behavior, of the relationship between those conditions and the behavior, or of the fact that the behavior has changed. This paper describes a series of experiments investigating this phenomenon. The findings support the existence of "learning without awareness." However, it is argued that the term "awareness" should be discarded as it is misleading. Instead, the results of the experiments are discussed in terms of behavior for which the individual does not provide a complete verbal account.

The Analysis of verbal behavior, 2006 · doi:10.1007/BF03393031