1 TKI 
per Person

Which of the five conflict modes
are you using too much or too little?

Take the Thomas-Kilmann Instrument (TKI assessment) from the person who co-created it: Dr. Ralph H. Kilmann. Ralph’s e-learning platform offers all his research, online courses, and TKI certifications.

About the TKI Assessment

Kilmann Diagnostics is dedicated to resolving conflict throughout the world, so we naturally include 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.

Click here to see: Sample Results and Interpretive Materials.

NOTE: If you wish to take the online TKI from Kilmann Diagnostics in Latin American Spanish, Brazilian Portuguese, Chinese (Traditional or Simplified), Japanese, or Swedish, please Contact Us for our special pricing and refund policy for these special-order, professionally translated TKI assessments, each of which produces a personalized TKI Report for the respondent in that same written language. You can also purchase and then take the TKI in different mediums (in a paper booklet or with a self-scorable ebook) in more than 10 different languages: Translations for the TKI Assessment.

See this Dedicated TKI Page, which provides many free resources. And be sure to watch our free, very informative, Videos for the Thomas-Kilmann Instrument. You can also read our many Full-Length TKI Articles and TKI Blogs.


take the TKI on your laptop or desktop computer, or on your tablet or smartphone


average time to complete 1 TKI assessment on the publisher’s Elevate platform


download your personalized TKI Report as soon as you’ve completed the assessment


the results of this assessment are discussed in our 3 courses in conflict management:


THE MOST KNOWLEDGEABLE EXPERT AT YOUR DISPOSAL: Dr. 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.

LEARN ALL ABOUT YOUR CONFLICT BEHAVIOR: 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.

COMPARE YOUR RESULTS TO THOUSANDS OF OTHERS: 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.

THE TKI IS AMAZINGLY ACCURATE: One 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.


Learning how to manage conflict more effectively is a vital skill for every human service professional who works with individuals, couples, groups, organizations, or nations. The TKI assessment, therefore, is relevant to all these OCCUPATIONAL IDENTITIES:

Resources for trainers and facilitators - button
Resources for independent consultants - button
Resources for HR and learning executives - button
Resources for change agents - button
Resources for executive and business coaches - button
Resources for mediators and ombudspersons - button
Resources for therapists - button
Resources for professors and students - button
Resources for Peacebuilding practitioners - button
Find more resources for project mangers - Button
See all courses - button
Purchase the Online TKI

Only for Yourself

The price for one online TKI is $45. Click on the button below to place this online assessment into 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: The Myers-Briggs Company.

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

One TKI Per Person


SKU: TKI Category:
Purchase the Online TKI

For Other Persons

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.

Click on the button below to place the online TKI assessment for one or more other persons into your shopping cart. If you enter 50 or more TKIs during the purchasing process, 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 KD_Spreadsheet for Creating Group Accounts and follow the instructions. If you are buying the TKI for one other person, fill out the spreadsheet for just that 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.

Extra Services for Group Accounts: When all the participants in your group have completed their TKI assessments, if you request it, we can send you a zip file that contains their TKI Reports. However, if you wish to have these zip files sent to you more frequently, we charge extra for this special service. In addition, we are willing to provide you with an update on the status of your account just prior to a workshop or other educational program (regarding who has and who hasn’t completed the TKI assessment). But if you wish to receive more frequent updates, we also charge extra for such a time-consuming service. Moreover, if you need help in correctly completing additional KD_Spreadsheets for your group account (let alone completing your initial KD_Spreadsheet), we are willing to provide that service, but that extra work is not covered in the group purchase price of TKI assessments. Please Contact Us for these and other extra services, which you can then purchase on our Special Payments Page.

One TKI Per Person – Group Purchase


SKU: TKI - Group Category:
Basic Training in Conflict Management by Ralph Kilmann Course Cover

Discover the full
potential of the
TKI assessment

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 link below to learn how you can gain the most value-added knowledge from an individual’s TKI assessment.