HomeDisabilityHalf 2: What Is Aim Attainment Scaling?

Half 2: What Is Aim Attainment Scaling?


A girl sitting on a Rifton Adaptive Tricycle with a caretaker holding the front guide barAim Attainment Scaling (GAS) is a client-centric, criterion referenced measure of progress, aware of minimally important modifications in a selected final result, whether or not or not it’s a person objective or a useful objective. GAS targets might be written for any facet of the Worldwide Classification of Perform (ICF).1 GAS can seize useful and significant progress in a consumer the place a standardized measure could not.2, 3, 4

GAS might be written for any consumer useful stage, and is possible and reasonably priced.5, 6 GAS has demonstrated content material validity and inter- and intra-rater reliability.7, 8, 0, 10, 11 GAS has additionally proven responsiveness to kids with cerebral palsy, motor delays and different developmental situations, and has confirmed to be extra aware of useful modifications than standardized measures.2, 3, 4

GAS is supposed to be accomplished collaboratively with the household (or IEP group and scholar if ready) and will meet six necessities: it have to be related, comprehensible, attainable, time restricted, behavioral and observable.

Creating targets utilizing the Worldwide Classification of Perform (ICF) is beneficial to be able to promote the specificity of the objective.1 GAS procedures contain figuring out a novel set of targets for a consumer and a spread of attainable outcomes for every objective throughout the intervention time interval, primarily based on the next 5 ranges:

  • -2, which is the baseline stage and what’s going to happen if the intervention doesn’t facilitate change
  • -1, being a lower than anticipated change
  • 0, being the objective (or what is anticipated with intervention)
  • +1, being the consumer achieved greater than anticipated given the intervention
  • +2, being the consumer achieved rather more than anticipated given the intervention

These ranges needs to be primarily based on scholar statement, interviews of related stakeholders and/or assessments. The intervals between ranges needs to be clinically important and written within the current tense.

For measurability, standards for monitoring progress ought to have one variable that demonstrates equal intervals throughout an ICF stage that’s used; repetitions, time (period or frequency), distance and/or help are examples. Ranges -1 and/or -2 can be utilized to measure regression, usually for a scholar with a degenerative situation.

King et al. (2000)12 indicated GAS could also be significantly helpful for youngsters with low cognitive functioning, as standardized measures is probably not delicate to small incremental modifications significant to that specific baby. Different advantages of GAS embody higher potential for therapists to make clear their remedy aims and to conceptualize and ship remedy intervention, and improved consumer satisfaction.

The GAS Coaching Handbook by McDougall and King (2007)13 recommends three targets for every consumer. GAS permits for scoring a number of targets by offering an mixture measure of change for the consumer utilizing a T-score with a imply equal to 50 and a normal deviation of 10.3 T-score guide calculation being laborious, the GOALed App, obtainable for iPhone and Android, has been developed by a bodily therapist. It’s a user-friendly app that may shortly calculate the T-score of GAS targets.1

The GAS guide written by McDougall and King10 gives additional instruction on GAS procedures, together with checklists for GAS content material (Appendix C), coaching and potential challenges.

See Half 1: Why Aim Attainment Scaling? and Half 3: The Software of GAS to the IEP Course of.

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