“I want to feel more like myself” is something a client might say when describing what they hope to gain from therapy. While this offers a starting point, it doesn't tell the therapist or client what meaningful progress would look like. What would be different in the client's daily life? How would they recognize that things were improving?
Goal attainment scaling (GAS) helps therapists and clients turn broad hopes into specific, individualized, measurable goals. Originally developed by Thomas Kiresuk and Robert Sherman, GAS involves defining a goal and describing different levels of progress toward it in advance. This gives therapists and clients a shared framework for evaluating change while recognizing that not everything meaningful in therapy can be captured by a score.
Key Takeaways
- Goal attainment scaling (GAS) helps therapists and clients define individualized, measurable treatment goals and track progress toward them.
- GAS typically uses a five-point scale, ranging from −2 to +2, with 0 representing the expected level of goal attainment.
- Each level describes a specific, observable outcome, helping therapists and clients recognize meaningful changes over time.
- GAS can be adapted to different therapeutic goals, but therapists should establish clear scoring criteria and document how the scale will be used.
- GAS measures progress toward specific goals rather than overall mental health or treatment effectiveness.
- Scores are most useful when considered alongside the client's experiences, clinical observations, and other relevant measures of progress.
What the Scale Adds to a Therapy Goal
A treatment goal identifies what a client wants to change. Goal attainment scaling (GAS) takes that goal a step further by defining what different levels of progress would look like, from less than expected to more than expected improvement. Rather than simply determining whether a goal was met, GAS gives therapists and clients a way to recognize and measure progress along the way.
For example, a client who wants to feel less isolated might identify reconnecting with friends as a meaningful goal. Together, the therapist and client could define different levels of attainment based on how often the client initiates contact or participates in social activities. The specific outcomes should reflect the client's priorities, circumstances, and starting point rather than a standardized expectation of what social connection should look like.
Although GAS provides a structured approach to tracking progress, different methods of developing and scoring scales can influence how results are interpreted. Much of the research and guidance comes from rehabilitation settings, so therapists should be thoughtful about how they apply the approach in psychotherapy. The same concept can still apply.
For clinicians who are still working with clients to identify meaningful treatment goals, this guide to therapy goals and objectives offers a useful starting point. GAS becomes particularly helpful once a specific goal has been identified and the therapist and client are ready to define how progress will be measured.
Choosing Something Worth Measuring
Not every measurable behavior reflects meaningful therapeutic progress. Before developing a GAS scale, therapists should work with clients to identify what they want to change and why that change matters to them. The goal should reflect the client's values, priorities, and circumstances rather than simply what is easiest to count.
For example, a client who wants to reconnect with their creativity might identify drawing as something they miss. Rather than setting a goal of completing a certain number of drawings, the therapist and client could focus on making time for creative expression. The number of times the client engages in drawing could then serve as one indicator of progress toward something personally meaningful.
When identifying a goal to measure, therapists and clients can explore several questions:
- What would meaningful progress look like in the client's daily life?
- How does this goal connect to what matters to the client?
- What aspects of the goal are within the client's control or influence?
- How will progress be measured and reviewed?
It's also important to consider circumstances that may affect goal attainment. Reconnecting with a friend, for example, depends partly on the other person's availability and willingness to engage. A goal involving employment may be influenced by workplace conditions or access to accommodations. A well-designed GAS scale accounts for these factors so that external barriers aren't mistaken for a lack of effort or motivation.
An Illustrative Goal Attainment Scale
Consider an adult client experiencing depression who has become increasingly socially withdrawn. The client identifies reconnecting with friends as an important part of their recovery. Together, the therapist and client agree on a goal of initiating social contact more regularly.
The client currently initiates contact with a friend about once per week. They agree to track the number of days the client initiates a text, phone call, or in-person conversation with a friend over a one-week period. Based on the client's current functioning and circumstances, they establish three days per week as the expected outcome.
The therapist and client then define five levels of goal attainment:
Each level describes a specific, measurable outcome, allowing the therapist and client to evaluate progress using criteria they established together. Because the goal focuses on initiating contact rather than receiving a response, it measures a behavior largely within the client's control.
At the agreed review point, the therapist and client can compare the outcome with the scale and discuss what contributed to the result. For example, initiating contact more frequently may represent meaningful progress even if the client continues to experience depressive symptoms or doesn't receive the responses they hoped for.
This is an illustrative example, not a standardized scale or a recommended target for all clients experiencing depression. GAS goals and attainment levels should be individualized based on the client's baseline functioning, preferences, and treatment priorities.
Why baseline needs its own description
In the example above, the client's baseline of initiating contact with a friend once per week corresponds to a score of −1. However, GAS methods differ in how they assign baseline scores. Some approaches place the client's starting point at −2, while others allow baseline to fall at different levels depending on current functioning and the expected outcome.
Because GAS implementation and scoring methods vary, therapists should establish and document how baseline is defined before tracking progress. Using a consistent approach helps ensure that changes in scores are interpreted accurately over time.
What to check before using the anchors
Each GAS anchor should describe a clear, measurable outcome so that the therapist and client can determine which level of attainment was reached. Combining multiple outcomes in a single anchor can make scoring difficult. For example, “Initiate contact with three friends and feel less anxious afterward” measures both social engagement and emotional distress. A client might accomplish one without experiencing the other.
Before using a scale, therapists should review the anchors with the client to make sure each level is realistic, distinct, and easy to interpret. Consider whether someone reviewing the same information would arrive at the same score. If there is uncertainty about what counts as initiating contact, for example, the criteria should be clarified before tracking begins.
Clearly defined anchors support more consistent scoring and meaningful discussions about progress. When GAS results will be used for research, program evaluation, or other formal decision-making, additional methodological guidance or consultation may be appropriate.
Reading the Result with the Client
Suppose the client in our earlier example initiates contact with friends on three days during the review week. This corresponds to a GAS score of 0, indicating that the client reached the expected outcome for that goal.
The score provides a useful reference point, but the conversation about what happened is just as important. Did reaching out feel easier than it had before? Did the client experience a greater sense of connection, or did social interactions continue to feel difficult? Exploring these questions helps the therapist and client understand whether meeting the behavioral goal is contributing to the broader changes the client hopes to achieve.
Context also matters when a client doesn't reach the expected outcome. For example, a demanding work schedule, illness, or unexpected family responsibilities might limit opportunities for social interaction. A lower GAS score reflects the level of goal attainment, but it doesn't necessarily indicate a lack of motivation, effort, or therapeutic progress.
Goals may also need to change as treatment progresses. If the client discovers that initiating more contact isn't improving their sense of connection, the therapist and client can revisit what matters most and develop a more relevant goal. Documenting the original anchors and review dates, along with any revisions, helps preserve an accurate record of progress over time.
Keeping the Score in Perspective
Goal attainment scaling provides a structured way to evaluate progress toward individualized treatment goals, but it doesn't capture every aspect of a client's mental health or functioning. Reaching an expected outcome doesn't necessarily mean symptoms have improved, just as falling short of a goal doesn't mean therapy has been unsuccessful.
GAS scores should be interpreted alongside other sources of clinical information, including standardized symptom measures, clinical observations, and the client's own experience. For example, a client experiencing depression might meet their goal of initiating social contact three times per week while continuing to struggle with low mood or feelings of loneliness. Both outcomes are important for understanding treatment progress.
Some GAS methods allow scores from multiple goals to be combined into a standardized T-score. However, these calculations require specific scoring procedures and assumptions, and evidence supporting GAS in one clinical population doesn't necessarily establish its validity in another. Therapists should be cautious about using aggregate scores to compare clients or draw conclusions about overall treatment effectiveness.
When documenting GAS results, include the goal, the agreed scoring criteria, the level of attainment, and any relevant context discussed with the client. For example:
“Client reported initiating contact with friends on three days during the review week, meeting the expected outcome (GAS score = 0). Client described feeling more comfortable reaching out but continued to experience loneliness. Therapist and client discussed ways to build more meaningful social connections.”
This approach makes the score clinically useful without overstating what it represents. GAS can complement ongoing progress monitoring by helping therapists and clients evaluate specific goals while continuing to assess broader changes in symptoms, functioning, and well-being.
Frequently Asked Questions about Goal Attainment Scaling
What does zero mean in goal attainment scaling?
In the standard five-point GAS format, a score of 0 indicates that the client achieved the expected outcome for a specific treatment goal at the agreed review point. It does not mean the client has made no progress or is free of symptoms.
Is a goal attainment scale a standardized symptom measure?
No. Goal attainment scaling (GAS) measures progress toward individualized treatment goals rather than assessing symptoms using a standardized questionnaire. GAS can complement standardized symptom measures by helping therapists and clients track meaningful changes that may not be captured by symptom scores alone.
Can the client help create the scale?
Yes. GAS is a collaborative process in which therapists and clients work together to identify meaningful treatment goals and define what different levels of progress would look like. The therapist helps ensure that the goals are realistic, the scoring criteria are clear and measurable, and the scale is appropriate for the client's needs and treatment context.
