An ABA goal baseline should describe performance before the proposed intervention under defined conditions. Families can ask which response and opportunities were measured, who observed them, where and when, which prompts or ordinary supports were present, how many observations occurred, what data were missing, and what the client reported. A weak or unrepresentative sample may require more assessment before a reliable comparison.
An ABA goal baseline needs observable definitions
Specify the response, opportunity, observation window, unit, setting, people, materials, ordinary supports, prompts, and exclusions. Label direct observation, client report, caregiver report, record review, and device data separately.
Sample the conditions that matter
A clinic baseline may not represent home, school, work, or community use. Ask which contexts are important to the person and whether enough valid opportunities occurred there. Preserve missing and no-opportunity periods.
Compare like with like
Later data should use the same definition or a clearly marked new version. Record phase changes, support changes, and measurement changes. A difference after several conditions changed together cannot isolate one cause. The BCBA Test Content Outline covers assessment, client-informed goals, measurement, intervention, generalization, maintenance, and data-based decisions as examination content. It is not a universal protocol or authority to practice.
Keep the baseline person centered
The CASP public summary places individualized assessment, planning, implementation, and evaluation within ABA treatment for people diagnosed with autism. The BACB Ethics Code addresses client involvement, understandable communication, consent and assent when applicable, assessment, intervention, risk, documentation, and evaluation for covered behavior analysts. Baseline collection should preserve communication, mobility, sensory, health, and safety supports. Ask whether the measure reflects a goal the person values and whether observation created avoidable burden.
Questions families can use
Ask for raw values, dates, settings, definitions, opportunity counts, supports, prompts, missingness, source labels, client feedback, and the clinician's reason that this sample is adequate for the decision.
Build the baseline evidence table
Use the baseline evidence table to describe performance before intervention under conditions that are defined, representative enough for the decision, and fair to the client. Capture response, opportunity, observation window, unit, settings, people, materials, AAC and ordinary supports, prompts, exclusions, sources, dates, raw values, missingness, client report, caregiver context, observer checks, and adequacy decision. Add the source, date, responsible role, current state, and next review so the family can distinguish direct client input, assessment evidence, clinical judgment, payer action, and operational readiness.
Choose states that fit the baseline evidence table: proposed, reviewed, selected, declined, active, paused, revised, replaced, ended, or held with reason. Keep an editable clinical proposal separate from consent, assent when applicable, authorization, staffing, service delivery, and payment.
Start with purpose and direct client input
Ask what the person wants more available, easier, safer, more comfortable, or more independent through the baseline evidence table. Provide AAC, interpreter, language, sensory, motor, visual, privacy, and processing supports. Label client communication, caregiver context, representative authority, observation, and record review by source.
For the baseline evidence table, connect an observable baseline or need to a real-life outcome. Explain the likely experience, ordinary supports, alternatives, effort, risks, and review point in language the person and family can use. A target should not become important merely because it is easy to count.
Follow the decision in order
- Define the response and eligible opportunity. Open the baseline evidence table with the client's purpose and current conditions.
- Sample conditions that matter to the person's daily goal. Preserve access, the person's response, and any urgent route.
- Label direct observation and indirect sources separately. Compare evidence, alternatives, burden, and authority.
- Preserve supports, prompts, no-opportunity periods, and missingness. Record the qualified decision and every dependency.
- Decide whether the sample supports comparison or needs more assessment. Review the person's experience and revise prospectively.
Every measure in the baseline evidence table needs a defined response, opportunity, setting, support condition, time window, and source. Report raw counts beside percentages, retain missing and no-opportunity events, and mark changes to definitions or procedures before comparing phases.
Prepare for the main complication
A clinic sample can be internally consistent while missing the setting where the goal matters. A baseline collected without the person's usual AAC or mobility support is also an access failure, not a neutral measure of ability.
When that issue appears, return to the baseline evidence table. Preserve the earlier version, the client's message, evidence available at the time, immediate response, alternatives considered, and the next review. A later correction should remain traceable rather than silently changing the history.
Work through a concrete example
Across six clinic opportunities, Arun uses a help message twice with his usual AAC. At home, only one comparable opportunity occurs during the sample week. The table reports 2 of 6 and 0 of 1 separately, marks the small home sample, and schedules more natural observations before setting a cross-setting target.
The example shows one way to use the baseline evidence table. Its facts do not establish a universal goal, threshold, priority, or outcome. Another case still needs current assessment, direct client input, and a professional with the applicable competence and authority.
Questions families can ask about the baseline evidence table
- What response and opportunity were defined?
- Were ordinary supports available?
- Which settings and sources are represented?
- How are missing and no-opportunity periods shown?
- Why is the sample adequate for this decision?
Ask for written answers tied to the baseline evidence table when they affect response, opportunity, observation window, unit, settings, people, materials, AAC and ordinary supports, prompts, exclusions, sources, dates, raw values, missingness, client report, caregiver context, observer checks, and adequacy decision. Unknown information can remain open while it is gathered, but it needs a current source, responsible owner, due date, and effect on the pending decision.
Review real-life fit after implementation
At the next review, compare the written baseline evidence table with what the client actually experienced. Check access, burden, preference, staff implementation, data quality, generalization, maintenance, and changes in health or context. Ask whether the outcome matters in daily life and whether another goal or support has become more important.
The baseline evidence table should support a fair future comparison. Preserve conditions and source labels so later change is not attributed to an intervention that began from an inaccessible or unrepresentative sample.
Check the first implementation period
Use the baseline evidence table to review the first meaningful opportunities after a goal starts, changes, pauses, or ends. Check whether the client had the promised communication and ordinary supports, staff followed the current version, opportunities matched the definition, and the person's burden or preference changed. Record access failures and implementation errors separately from the client's performance, then route any clinical revision to the responsible professional.
Give the client and family an accessible summary of the baseline evidence table, including the current version, decision, evidence limits, supports, open questions, and next review. Preserve disagreement and provide a route to correct a factual error or raise a new concern. Keep the dated summary so later changes do not erase what the family was originally told.
Sources
Finni resources