SPIN Scoring & Interpretation · Social Phobia Inventory

The SPIN (Social Phobia Inventory) is a 17-item self-report measure for social anxiety disorder. Items assess fear, avoidance, and physiological arousal across social and performance situations, producing a total score from 0 to 68.

What the SPIN measures

The SPIN (Social Phobia Inventory) is a 17-item self-report screening tool for social anxiety disorder developed by Connor et al. (2000) at Duke University Medical Center. It measures the core symptom domains of social phobia: fear of social situations, avoidance of social and performance contexts, and physiological symptoms (e.g., blushing, trembling, sweating).

Each item is rated on a 0–4 Likert scale (0 = not at all, 4 = extremely) reflecting distress over the past week. Scores are summed across all 17 items, yielding a total score of 0–68. Higher scores indicate greater social anxiety severity. The commonly used clinical cutoff is ≥19, which demonstrated sensitivity and specificity in the original validation

The SPIN is widely used in both research and clinical settings to screen for social anxiety disorder (SAD), monitor treatment response, and differentiate social phobia from generalized anxiety disorder. It is one of the most frequently cited social anxiety measures in the literature. It is not in the public domain: the SPIN is © Jonathan Davidson (1995, 2008, 2015), and written permission from the copyright holder is required to use or reproduce it. For clinician-rated severity across a broader range of feared situations, see the Liebowitz Social Anxiety Scale (LSAS).

Three Symptom Domains

The SPIN covers Fear (items related to embarrassment and judgment), Avoidance (situations avoided due to anxiety), and Physiological symptoms (physical reactions to social exposure). This three-factor structure supports differentiated clinical assessment.

How to administer the SPIN

The SPIN is entirely self-report, with no clinician scoring or observation required. The person rates how much each of the 17 statements applied to them over the past week. Use the calculator above to total the items; items are numbered, not reproduced.

Response scale: 0 = Not at all  ·  1 = A little bit  ·  2 = Somewhat  ·  3 = Very much  ·  4 = Extremely

Educational and screening purposes only. Not a substitute for professional clinical evaluation.

SPIN scoring and interpretation

Total score = sum of all 17 items (0–4 each). Score range: 0–68.

The validated screening cutoff is ≥19 (Connor et al., 2000). The severity labels above the cutoff reflect a commonly used clinical convention rather than a single primary study.

Clinical Cutoff Context

The ≥19 cutoff was established in the original Connor et al. (2000) validation study in outpatient clinical and community samples. As with all screening tools, positive screens require clinical follow-up, the SPIN identifies individuals who warrant further evaluation, not a definitive diagnosis.

SPIN Subscales

The SPIN has three subscales capturing distinct aspects of social anxiety.

Fear (6 items)

Distress about embarrassment, negative evaluation, and being judged in social or performance situations. Core cognitive component of social anxiety.

Avoidance (7 items)

Behavioural avoidance of social situations, parties, public speaking, eating in front of others. Avoidance maintains the anxiety cycle and impairs functioning.

Physiological (4 items)

Physical reactions including blushing, sweating, trembling, and racing heartbeat triggered by social exposure. Differentiates social anxiety from generalized worry.

Psychometric properties

In the original validation, the SPIN showed good test-retest reliability, internal consistency, and convergent and divergent validity; a score of 19 distinguished people with social phobia from controls, and scores were responsive to change during drug treatment (Connor et al., 2000). An independent evaluation in 132 people with social phobia, 57 with panic disorder and agoraphobia and 62 with obsessive-compulsive disorder found excellent internal consistency and good test-retest reliability, good discrimination between social phobia and the other two disorders, and sensitivity to change after cognitive-behavioural group treatment (Antony et al., 2006).

Limitations

• Screening, not diagnosis. A score of 19 or more identifies people who need a clinical evaluation; it does not diagnose social anxiety disorder.
• Severity bands are a convention. Only the ≥19 cutoff comes from the validation study; the mild-to-very-severe labels are not from a single primary study.
• Self-report. Results depend on insight and candour, and can be influenced by the avoidance the scale is measuring.
• Overlap. Physiological and avoidance items can be raised by other anxiety disorders; interpret alongside a clinical interview.

SPIN vs GAD-7 for Anxiety Screening

Both screen for anxiety, but they target different constructs. Choosing the right tool depends on what you need to measure.

Documenting SPIN scores in clinical notes?

SPIN scores belong in the Objective section of your note. See our SOAP notes guide and Intake Notes guide for templates and examples.