This comparison draws in part from “Everything You Didn't Learn in School About Conducting Behavior Assessment in Schools” by Maeve Donnelly, BCBA-D (BehaviorLive), and extends it with peer-reviewed research from our library of 27,900+ ABA research articles. The decision framework, BACB ethics code references, and cross-links below are synthesized by Behaviorist Book Club.
View the original presentation →One of the most consequential decisions a behavior analyst makes is not just what intervention to use, but how to approach the clinical question in the first place. For everything you didn't learn in school about conducting behavior assessment in schools, the difference between an evidence-based, individualized approach and a traditional, protocol-driven one can significantly impact outcomes.
This guide lays out the key factors side by side to support your clinical decision-making.
| Factor | Evidence-Based Approach | Traditional Approach |
|---|---|---|
| Strength of Evidence for Function | Descriptive: Correlational evidence that suggests but does not confirm function; vulnerable to confounded variables in natural settings | Functional Analysis: Experimental evidence that demonstrates functional relationships through systematic manipulation of antecedents and consequences |
| Feasibility in School Settings | Descriptive: Highly feasible; can be conducted during normal school routines with minimal disruption to instruction and peer activities | Functional Analysis: Requires trained personnel, a suitable space, session scheduling around the school day, and administrative support to implement |
| Time Required | Descriptive: Typically completed within 1-2 weeks including interviews, observations across settings, and data analysis | Functional Analysis: Brief models may take 1-2 sessions; extended analyses require multiple sessions over days or weeks, which may exceed IDEA timelines |
| Risk to Student | Descriptive: Low risk as behavior is observed in its natural context without deliberate evocation | Functional Analysis: Higher risk as conditions are designed to evoke problem behavior, requiring safety protocols and risk-benefit analysis |
| Staff Training Needed | Descriptive: Moderate; school staff can be trained to collect ABC data and complete rating scales with brief instruction | Functional Analysis: Substantial; condition therapists must implement precise antecedent and consequence manipulations with high procedural fidelity |
| Utility for Complex or Multiply Maintained Behavior | Descriptive: May struggle to differentiate multiple functions or identify subtle maintaining variables embedded in complex school routines | Functional Analysis: Can systematically isolate individual functions and test for multiply maintained behavior through separate conditions |
| Acceptability to School Teams | Descriptive: Generally well-accepted by school teams as procedures are less intrusive and more familiar to educators | Functional Analysis: May face resistance from administrators or parents concerned about deliberately evoking problem behavior in school |
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Use this framework when approaching everything you didn't learn in school about conducting behavior assessment in schools in your practice:
Does the data support a need for intervention? Is there a meaningful impact on the individual's quality of life, safety, or access to reinforcement?
YES → Proceed to assessment NO → Document reasoning, monitor
A functional assessment should guide intervention selection. Avoid defaulting to standard protocols without individual analysis. Consider environmental variables, setting events, and private events.
YES → Select evidence-based approach matched to function NO → Complete assessment first
Goals should be co-developed. Assent and informed consent are ethical requirements. The individual's preferences and values matter in selecting both goals and methods.
YES → Proceed with collaborative plan NO → Engage in shared decision-making
This course covers the clinical and ethical dimensions in detail with structured learning objectives and CEU credit.
Everything You Didn't Learn in School About Conducting Behavior Assessment in Schools — Maeve Donnelly · 1.5 BACB Ethics CEUs · $20
Take This Course →We extended this decision guide with research from our library — dig into the peer-reviewed studies behind each approach, in plain-English summaries written for BCBAs.
280 research articles with practitioner takeaways
279 research articles with practitioner takeaways
258 research articles with practitioner takeaways
1.5 BACB Ethics CEUs · $20 · BehaviorLive
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All behavior-analytic intervention is individualized. The information on this page is for educational purposes and does not constitute clinical advice. Treatment decisions should be informed by the best available published research, individualized assessment, and obtained with the informed consent of the client or their legal guardian. Behavior analysts are responsible for practicing within the boundaries of their competence and adhering to the BACB Ethics Code for Behavior Analysts.