Skill Strengths and Needs Assessment

Purpose and the Strength/Need Frame

Skill assessment asks what the learner can do now, under which conditions, with which materials, and with how much support. A common novice error is to produce only a deficit list. Strengths identify entry points, candidate reinforcers, viable response forms, and realistic next goals — they are assessment data, not filler.

A BCBA may assess communication, learner readiness, daily-living skills, academic components, social interaction, motor imitation, safety skills, self-management, or vocational routines. Scope is set by the referral, setting, age, risk, and client priorities.

Good skill assessment also documents the conditions under which a response succeeds or fails: the specific discriminative stimulus (SD), materials, prompt level, and reinforcer in play. 'Can label colors' is nearly useless as data; 'labels four colors when shown a single card with a vocal SD and edible reinforcement, but not when asked conversationally' is actionable. That level of specificity is what lets you write a precise goal and tells you whether the next obstacle is acquisition, stimulus control, generalization, or motivation.

The most testable conceptual split:

• Skill deficit — the response is not in the repertoire; the learner cannot do it even with prompts or models. Solution: teach (shaping, prompting, chaining).
• Performance deficit — the response exists but does not occur reliably; often a motivating operation (MO) is absent or reinforcement/stimulus control is weak. Solution: arrange conditions or contingencies, not new teaching.

The practical test for which one you have: give the learner a strong reason and full support to perform. If the response appears under prompts plus a powerful reinforcer, the skill exists and you have a performance problem. If it never appears even with prompts and models, you have a skill problem. Getting this wrong wastes months — teaching a skill the learner already has, or running motivation systems for a skill that was never acquired.

Criterion-Referenced vs. Norm-Referenced

The exam expects you to choose the right kind of tool. The key distinction is the comparison standard.

For programming and goal writing, ABA leans on criterion-referenced tools because they yield specific teachable targets rather than a rank. The three you must know:

• VB-MAPP (Verbal Behavior Milestones Assessment and Placement Program) — organizes skills by verbal operants (mand, tact, echoic, intraverbal, listener, etc.) across developmental milestone levels, plus a barriers assessment and a transition assessment. Rooted in Skinner's analysis of verbal behavior.
• ABLLS-R (Assessment of Basic Language and Learning Skills–Revised) — a broad early-skills inventory across language, academic, self-help, and motor domains; finer-grained tracking of many small skills.
• AFLS (Assessment of Functional Living Skills) — targets functional independence (home, community, school, vocational, basic living) across the lifespan, useful for older learners and adults.

A quick selection heuristic the exam rewards: for a young learner where you need to place verbal-behavior teaching and track milestones, reach for VB-MAPP; for broad, fine-grained early-skill tracking across many domains, ABLLS-R; for an older learner or adult where the priority is daily independence (cooking, money, community safety), AFLS. None of the three yields a percentile, an IQ, or a diagnosis — that is the whole point of criterion-referenced tools, and it is why an item asking for 'teaching targets' or 'placement' is never answered with a norm-referenced battery.

When a norm-referenced tool is the right answer, the item will be about eligibility, diagnosis, or documenting overall developmental level relative to peers — not about what to teach next. Tools like the Vineland (adaptive behavior) produce standard scores and age equivalents that compare the learner to a normative sample; they justify services and quantify a gap, but they do not break a skill into teachable steps.

Reading Data Patterns and Writing Goals

Response patterns map onto distinct implications, and naming the pattern dictates the intervention class.

Methods

Skill assessment uses direct probes, task analyses, criterion-referenced curricula (VB-MAPP/ABLLS-R/AFLS), caregiver and teacher interviews, permanent-product review, and observation in natural routines. Indirect reports are efficient, but direct probes reveal prompt levels, error patterns, and missing prerequisites that interviews miss.

From assessment to a defensible goal

A defensible goal states the response, condition, criterion, and context. If the assessment shows the client can request a break with gestures but not on the school AAC device, the next goal targets device-based break requests in difficult tasks. Do not select a goal merely because it is the next box in a curriculum sequence; ask which skill most improves access, independence, safety, communication, or participation now.