PSWQ: Penn State Worry Questionnaire

The Penn State Worry Questionnaire (PSWQ) is a 16-item adult self-report measure of trait worry. Each response scores from 1 to 5. Five negatively worded responses are reversed before all 16 values are added for a total from 16 to 80. Higher totals mean more reported worry, but no universal cutoff applies. The PSWQ does not diagnose generalized anxiety disorder.

What the PSWQ measures

Thomas Meyer, Mark Miller, Richard Metzger, and Thomas Borkovec introduced the PSWQ in a 1990 development study. It measures the generality, excessiveness, and difficulty controlling worry without dividing that worry into subjects such as health, work, or family.

No fixed recent recall period applies. The standard form asks what is generally typical of the respondent, so adding a timeframe changes the administration and can make the result less comparable with published evidence.

The PSWQ is not a checklist of every generalized anxiety symptom. It does not directly measure panic, phobias, compulsions, trauma symptoms, physical anxiety symptoms, or functional impairment.

The GAD-7 answers a different question. It asks about a broader group of anxiety symptoms over the past two weeks, while the PSWQ focuses on trait worry.

How scoring works

Each response contributes 1 to 5 points. Five responses are reverse scored, then all 16 corrected values are added. The UW–Madison scoring resource confirms the one-total structure, and an independent scoring analysis confirms the 16-to-80 range and five reversals.

Higher totals indicate more reported worry. Reverse scoring is essential: a straight sum gives the wrong result.

No universal missing-response rule exists in the 1990 paper. A former NHS data specification allowed mean substitution for one or two missing responses and rejected forms with more than two; that was one reporting protocol, not a general PSWQ rule. Do not present an incomplete form as a standard total unless the chosen protocol defines and documents its method.

How to interpret a PSWQ score

Interpret the total as a continuous measure. A higher score reflects more excessive or difficult-to-control worry, but it does not establish a diagnosis or one level of impairment.

Published thresholds answer different classification questions:

• A 2003 study reported 45 when comparing treatment-seeking adults with generalized anxiety disorder against non-anxious controls, and 62 in students classified with another questionnaire.
• A separate specialty-clinic study reported 53 when comparing generalized anxiety disorder with no Axis I diagnosis, and 65 when comparing it with social anxiety disorder.
• An older primary-care study evaluated 50 among adults aged 60 and older who had already screened positive for anxiety.

No single value fits all of these comparisons. The figures vary because the populations, comparison groups, and reference methods differ; they are not low, moderate, and high severity bands. Use a decision point only when its population and purpose fit the assessment.

For repeated measurement, keep the version and administration method the same. Review the score alongside the person's circumstances and functioning rather than treating a numerical change as proof of recovery.

What the result cannot establish

The PSWQ cannot identify the subject or cause of worry. It cannot separate generalized anxiety from depression, trauma, obsessive-compulsive symptoms, illness-related concern, or current stress.

It also cannot show how much worry interferes with sleep, work, relationships, or health unless those areas are assessed separately. A low total does not rule out another type of severe anxiety, and a high total does not select a treatment.

Versions and evidence

The standard adult form has 16 items and a 16-to-80 total. The eight-item PSWQ-A has a different 8-to-40 range. Child, 11-item, translated, and time-bounded forms also have separate evidence and scoring contracts.

The original study reported high internal consistency and good stability over time, distinguished college groups defined by different DSM-III-R generalized-anxiety criteria, and included 34 people diagnosed with generalized anxiety disorder. Later factor studies suggest that the five negatively worded responses can create a wording-related factor in some populations. Standard scoring still produces one total.

The reviewed evidence does not establish one authoritative completion-time estimate. Do not treat an unsourced time estimate as part of the standard PSWQ scoring contract.