Glossary term

Foundations & philosophical assumptions Glossary

Learn ABA terms for scientific goals, assumptions, radical behaviorism, selectionism, applied dimensions, experimental analysis, and professional practice.

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August 14, 2026
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August 14, 2026
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The Foundations & philosophical assumptions glossary explains the ideas that shape how behavior analysts ask questions, gather evidence, and judge whether applied work is useful. The terms range from scientific goals and assumptions to the seven dimensions of ABA and the boundary between basic research and professional service. Their value comes from the decisions they improve, rather than from using philosophical language as a badge of rigor.

Begin with the field and its domains

Applied behavior analysis is the applied science concerned with socially significant behavior and the variables that influence it. ABAI's behavior-analysis overview describes behavior analysis as a natural science with basic, applied, and service-delivery domains.

The experimental analysis of behavior is the basic-research domain that studies behavioral processes under controlled conditions. Professional practice guided by behavior analysis applies behavior-analytic knowledge in services delivered within professional competence, ethics, law, consent, and other governing requirements.

These domains inform one another. A laboratory finding is not automatically a treatment. Professional experience is not automatically experimental evidence.

Use the scientific goals carefully

Description as a scientific goal seeks accurate, systematic accounts of behavior and relevant conditions. Prediction as a scientific goal identifies reliable covariation that supports forecasting under defined conditions. Control as a scientific goal refers to demonstrating that manipulation of a variable reliably changes an outcome.

In applied work, “control” describes experimental influence. It should never be used to justify controlling a person, suppressing communication, or overriding rights. Client choice, consent, assent when applicable, safety, and social validity remain central.

The BACB BCBA Test Content Outline includes philosophical assumptions, concepts, measurement, experimental design, assessment, intervention, and evaluation as examination content. It is a learning map, not a complete philosophical argument or practice protocol.

Understand the assumptions as working commitments

Determinism treats behavior as a lawful phenomenon influenced by variables, rather than as an event outside possible understanding. It does not mean every response is predictable or that people lack values, experience, or agency in everyday and legal senses.

Empiricism emphasizes observation and measurement. Evidence can include direct behavior, environmental events, client report, caregiver report, health information, records, and other sources, each labeled with its limits.

Parsimony favors simpler adequate explanations before adding complexity. It does not license ignoring medical, trauma, cultural, sensory, communication, or structural factors.

Pragmatism evaluates ideas partly by the useful action and prediction they support. Usefulness must be defined with the person and include quality of life, dignity, safety, sustainability, and unwanted effects.

Selectionism explains behavior through selection by consequences across biological, individual, and cultural levels. Radical behaviorism is a philosophy that includes private events within the subject matter of behavior science while treating them as behavior requiring analysis, not as inaccessible causes that end inquiry.

Foundational discussions of the field appear in Baer, Wolf, and Risley's 1968 paper and later discussion of the dimensions. These are influential historical sources. Current practice also answers to contemporary evidence, ethics, law, and affected people.

Use the seven dimensions as questions

The applied dimension of ABA asks whether the behavior and outcome matter to the person and community. The behavioral dimension of ABA asks whether the work measures behavior reliably and directly enough for the question.

The analytic dimension of ABA asks whether evidence supports a credible relation between intervention and outcome. The technological dimension of ABA asks whether procedures are described clearly enough for competent implementation.

The conceptually systematic dimension of ABA connects procedures to behavioral principles. The effective dimension of ABA asks whether change is meaningful in size and value. The generality dimension of ABA asks whether useful change lasts and extends across relevant people, settings, materials, or behaviors.

No single dimension repairs failure in another. A replicable procedure can be unwanted. A preferred goal can still have weak measurement. A statistically clear effect can still be too small or burdensome to matter.

Use the dimensions as a review conversation, with evidence beside each answer and the client's priorities visible throughout.

Bring philosophy back to the client

For BCBA and BCaBA certificants and applicants, the BACB Ethics Code addresses competence, understandable communication, client involvement, consent and assent when applicable, assessment, intervention, risk, documentation, and evaluation. BACB has no separate jurisdiction over organizations or corporations.

When evaluating a plan, ask: What experience does the client want? What is directly observed and what is reported? Which alternative explanations remain? What would count as a meaningful benefit? Which burdens and side effects are tracked? When will the team stop, revise, generalize, or transfer support?

A practical foundations example

A clinician studying a chosen transit skill describes five eligible trips before adding a visual route card. The client completes two trips with the planned independence criterion. Across five later trips, the client completes four. That pattern describes and helps predict performance under the observed conditions.

Because the card, practice, route familiarity, and time changed together, the comparison does not by itself demonstrate experimental control. Pragmatic value also depends on the client's view, safety, burden, and whether the skill works on routes that matter.

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