State-Trait Anxiety Inventory for Adults

The most widely used self-report measure of anxiety

Charles D. Spielberger

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The STAI Form Y is the definitive instrument for measuring anxiety in adults. It clearly differentiates between the temporary condition of “state anxiety” and the more general and long-standing quality of “trait anxiety”. It helps professionals distinguish between a client’s feelings of anxiety and depression. The inventory’s simplicity makes it ideal for evaluating individuals with lower educational backgrounds. Adapted in more than forty languages, the STAI is the leading measure of personal anxiety worldwide. The STAI has forty questions with a range of four possible responses to each. Note that the STAI Form X (the previous form) is available from Mind Garden to match pre-1983 research.

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Tutorial License to Use - purchasing options
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Tutorial Personal Reports

Let us do the administration for you. We will send you a link to a unique and secure online "control panel" where you will enter clients names and email addresses. Clients will be sent an email with a secure url address to take the evaluation* in privacy at their convenience. You can monitor their progress from your control panel. Instruments will be scored and a report returned to you. Select the desired number of reports from the drop-down menu.
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The following volume pricing applies:

Individual report$15.00 each
2-10 reports$14.00 each
11-20 reports$13.00 each
21-50 reports$12.00 each
51-100 reports$11.00 each

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Group Report

In general, Group Reports save time by doing the group calculations and providing limited interpretation. The purchase of a Group Report must be accompanied by a purchase of Licenses (Online Surveys) since there must be data available for the Group Report to run. You will need one Group Report per campaign (campaign = Online Survey grouping).

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About the STAI

The State-Trait Anxiety Inventory Form Y (STAI) is the definitive instrument for measuring anxiety in adults. The STAI clearly differentiates between the temporary condition of "state anxiety" and the more general and long-standing quality of "trait anxiety." The essential qualities evaluated by the STAIS-Anxiety scale are feelings of apprehension, tension, nervousness, and worry. Scores on the STAIS-Anxiety scale increase in response to physical danger and psychological stress, and decrease as a result of relaxation training. On the STAIT-Anxiety scale, consistent with the trait anxiety construct, psychoneurotic and depressed patients generally have high scores.

Contents of Manual


STAI State Anxiety

Norm Groups

High School, College, 19-39 years old, 40-49 years old, 50-69 years old

Norm Tables

Working Adults, College Students, High School Students, Military Recruits

Inventory Booklet

Individuals respond to each item on a four-point Likert scale, indicating the frequency with which each strategy is used.


The S-Anxiety scale consists of twenty statements that evaluate how respondents feel "right now, at this moment."

1 2 3 4
Not At All Somewhat Moderately So Very Much So

A. I feel at ease 1 2 3 4
B. I feel upset 1 2 3 4


The T-Anxiety scale consists of twenty statements that assess how respondents feel "generally."

1 2 3 4
Almost Never Sometimes Often Almost Always

A. I am a steady person 1 2 3 4
B. I lack self-confidence 1 2 3 4


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