Thomas-Kilmann Conflict Mode Instrument



Kilmann Diagnostics is dedicated to resolving conflict throughout the world, so we naturally make use of the renowned Thomas-Kilmann Instrument (TKI) in every one of our recorded online courses. Why? Because no two individuals have exactly the same needs and concerns, conflict is a natural part of our interactions with others—whether in our personal life or in our organizational life. The TKI is an online assessment that will take you 15 to 20 minutes to complete and download your personalized results—which will help you discover the most appropriate uses for each conflict-handling mode in different situations. Be prepared to experience many eureka (aha) moments!

The TKI has been the leader in conflict resolution assessment for more than forty years. To date, more than 8,000,000 copies of the TKI have been published since 1974. 

See this Dedicated TKI Page, which provides a great variety of online resources. Be sure to watch our seven Videos for the Thomas-Kilmann Instrument and read our many Full-Length TKI Articles. To learn where to take the TKI assessment in Spanish, Portuguese, French, German, Danish, Dutch, Swedish, Italian, Russian, Chinese, or Japanese, click here.


  • The TKI has been the worldwide leader in assessing conflict-handling behavior for over forty years. More than 8,000,000 copies of the TKI have been purchased since 1974. When you take the TKI, therefore, you can be confident that you're using an assessment tool that has withstood the rugged test of time.
  • The TKI AssessmentDr. Ralph Kilmann is the co-author of the TKI: If you have any questions about how to administer the assessment or interpret your results, you won't be able to find another person who has more TKI knowledge and experience.
  • The TKI is a self-report assessment that allows you to discover whether you might be overusing (a high score) or underusing (a low score) one or more of these five conflict-handling modes: competing, collaborating, compromising, avoiding, and accommodating. 
  • To determine which of your TKI mode scores are high or low, your results are compared to a.U.S. research sample of 8,000 men and women who were drawn from a pool of 59,000 TKI respondents in order to mirror the demographic distribution of the U.S. population. A subsequent cross-cultural research sample of 6,000 men and women from 16 different countries revealed only minor variations from the U.S. norms. These rather surprising results demonstrate that the TKI is measuring an aspect of conflict-handling behavior that is fairly consistent across different countries and cultures.
  • Sample TKI ReportOne reason that TKI results have such cross-cultural consistency is because the assessment was purposely designed to minimize the "social desirability response bias" (which is the natural tendency for people in all societies to respond to test items in order to look good to themselves or to others). Consequently, TKI results provide an accurate picture—across the globe—of how people actually behave in conflict situations. 
  • The online version of the TKI assessment only takes 15 minutes to complete. Immediately afterwards, you can download your TKI Profile. Click here to see a Sample TKI Report.

Your TKI Profile



The price for the online TKI is $45. At the bottom of this page, you can add this online assessment to your shopping cart. To purchase the PAPER version of the TKI, which requires you to score, graph, and interpret your own results, you must go to the publisher's website: CPP, Inc.

Once you complete your purchase, you have 90 days to take the TKI assessment and download your personalized TKI report.



For 1 to 49 persons, each TKI is $45.00.
For 50 to 99 persons, each TKI is $42.50. 
For 100 to 499 persons, each TKI is $40.00. 
For 500 to 999 persons, each TKI is $37.50. 
For 1000 or more, each TKI is $35.00.

At the bottom of this page, you can enter the desired quantity of TKIs to your shopping cart. If you enter 50 or more TKIs, the total charge will be based on the relevant quantity discount. As soon as a TKI is assigned to a person on your spreadsheet (see below), he or she has 90 days to take the assessment.

After you complete your checkout, download The Spreadsheet for Creating Group Accounts and follow the instructions. If you are buying the TKI for only one person, fill out the spreadsheet for just this one person.

If you'll be conducting an educational program for several persons (or someone else) and you want to make use of their TKI results before that meeting, ask them to send you a copy of their personalized report as soon as they have downloaded it.

Review Our Purchasing Options and Privacy Policy


Special Requests: We are willing to handle some special requests that pertain to group TKI purchases, which include preparing spreadsheets, manually locating username accounts (when participants have not followed our instructions for receiving our account emails), reprinting and/or sending a group member's TKI Report for any reason, and providing updates on who has (and who hasn't) completed their TKI assessment. But we charge a fee or add a surcharge per TKI for providing such extra services. Please Contact Us for more information.

In addition, if you wish to purchase 50 or more paper TKI booklets, we are willing to provide that service (but not for an order that's less than 50 TKI booklets in total). After you make your purchase on our website, let us know your shipping address, since we do not collect that information during the purchasing process. But we do not ship outside the continental USA. In case you wish to purchase less than 50 TKI paper booklets, we request that you go directly to the publisher's website, CPP, Inc., since we do not provide this special service for small-quantity orders.


BASIC Training in Conflict Management


During our 80-minute BASIC Training in Conflict Management, not only will Dr. Kilmann help you interpret your TKI results, but you'll also learn how to interpret other people's results. Taking this course is the best way to make sure you are accurately interpreting TKI results—and using this assessment to its full potential. Click on the image to the right to learn how you can gain the most value-added knowledge from an individual's TKI assessment.


GROUP Training in Conflict Management


If you will be purchasing the TKI for a work group, consider taking GROUP Training in Conflict Management, which will help you develop and interpret "Group TKI Profiles." This course will enable consultants, trainers, and coaches to improve conflict-handling behavior in the workplace far beyond what is possible from simply averaging "Individual TKI Profiles." Click on the image to learn more.




Before you can purchase the TKI assessment, you must first create a username account—or log in to your existing account. After you have completed your purchase, click on My TKI on your username panel at the top left of our Website. A new page will open that will provide the instructions and a link for taking the TKI. 


The TKI Assessment Before Any Quantity Discount:

Price: $45.00