WAI Scoring Guide — Working Alliance Inventory

What is the Working Alliance Inventory?

The Working Alliance Inventory (WAI) is a well-validated therapeutic alliance measure developed by Adam O. Horvath and Leslie S. Greenberg (1989) at Simon Fraser University. It operationalises Bordin's (1979) pantheoretical model of the working alliance, which holds that therapeutic change depends on three interdependent alliance components:

1. Bond — The quality of the personal attachment between client and therapist; feeling understood, cared for, and trusted
2. Task — Mutual agreement and understanding of the specific activities undertaken in therapy
3. Goal — Consensus on the targets and outcomes of treatment

The WAI can be completed by the client (client form), therapist (therapist form), or an observer rating a session (observer form). All three perspectives have been validated and are used in both research and clinical training.

WAI Versions and Items

Original WAI (Horvath & Greenberg, 1989)

36 items, 7-point Likert scale (1 = Never to 7 = Always). Three subscales of 12 items each (Bond, Task, Goal). Total score range: 36–252.

WAI-S — Short Form (Tracey & Kokotovic, 1989)

12 items selected from the original 36, 4 items per subscale. Total score range: 12–84. Factor structure replicates the three-factor model.

WAI-SR — Short Revised (Munder et al., 2010)

12 items, revised item selection for improved psychometric performance in outpatient and internet-based interventions. Currently the most widely used short form. Comparable normative data available.

WAI Scoring

Items are rated on a 7-point scale:

• 1 = Never
• 2 = Rarely
• 3 = Occasionally
• 4 = Sometimes
• 5 = Often
• 6 = Very often
• 7 = Always

Some items are reverse-scored — consult the scoring key for your specific version (WAI, WAI-S, or WAI-SR). Reverse-scored items represent low alliance (e.g., "I am not sure what we are trying to accomplish in therapy").

Subscale scores are sums of the respective items. Total score = sum of all subscale scores.

Interpreting WAI Scores

The WAI does not have a single universally accepted clinical cutoff like the ORS (≤25) or SRS (≤36). Interpretation relies on comparison with normative data and within-client change over time.

General benchmarks (WAI-S, client form, outpatient therapy)

• Mean scores in general outpatient samples typically fall in the 4.5–5.5/7 range per item (subscale mean 18–22/28 for WAI-S)
• Scores below 3.5/7 average per item typically signal a problematic alliance requiring clinical attention
• A drop in WAI scores from early to mid-therapy is a reliable predictor of dropout and poor outcome

Subscale patterns matter

Low Bond scores suggest the client does not feel personally understood or cared for. Low Task scores suggest disagreement on what they're actually doing in sessions. Low Goal scores suggest the client's treatment goals are not aligning with the therapist's understanding. Each subscale profile points to a different clinical response.

The Alliance as a Predictor of Outcome

A landmark meta-analysis by Flückiger, Del Re, Wampold et al. (2018, Psychotherapy, 55(4), 316–340; PMID 29792475) across 295 studies found a consistent moderate effect of alliance on outcome (r = .28), independent of treatment modality. Critically, the alliance predicts outcome regardless of whether CBT, psychodynamic, or other approaches are used — making the WAI a transtheoretical tool for outcome-relevant practice.

WAI in Clinical Training and Supervision

The WAI is widely used in:

• Clinical training — tracking alliance development across a trainee's early sessions
• Supervision — comparing client and therapist forms to identify alliance blind spots
• Research — alliance as mediator/moderator in clinical trials
• Periodic check-ins — sessions 3, 8, and 16 are common assessment points in medium-length treatments

Track Alliance in HiBoop

HiBoop tracks therapeutic alliance measures alongside symptom severity and functional outcome. Session-by-session alliance data is available for every client, with trend graphs and clinician alerts.