Home - IDI LLC, owned and operated by Mitchell R. Hammer, Ph.D. specializes in the assessment and development of intercultural competence based on the Intercultural Development Inventory® (IDI®).
About Us - IDI, LLC manages the Intercultural Development Inventory (IDI). Our company is a division of Hammer Holdings, Inc., a company that also includes ICS Inventory, LLC —offering the Intercultural Conflict Style (ICS) Inventory.
- Our Mission - Through the application of the IDI® and the ICS® Inventory®, we facilitate personal growth and insight and collective change in ways that improve people’s intercultural competence.
- Our Team - Meet our team of professionals at Intercultural Development Inventory (IDI, LLC).
- Employment Opportunities - Interested in career opportunities with IDI, LLC? Check here for open employment positions.
IDI General Information - The Intercultural Development Inventory® (IDI®) is the premier cross-cultural assessment of intercultural competence that is used by thousands of individuals and organizations to build intercultural competence to achieve international and domestic diversity and inclusion goals and outcomes.
- Why You Should Consider Using the IDI - In order to familiarize you with the wide-range of applications of the IDI in your workplace, we have summarized key information here.
- The Intercultural Development Inventory® (IDI®) - The Intercultural Development Inventory® (IDI®) assesses intercultural competence—the capability to shift cultural perspective and appropriately adapt behavior to cultural differences and commonalities.
- The Intercultural Development Continuum (IDC™) - The Intercultural Development Continuum (IDC) describes a set of knowledge/attitude/skill sets or orientations toward cultural difference and commonality that are arrayed along a continuum from the more monocultural mindsets.
- 12 Reasons for Using the IDI - View our top 12 reasons for using Intercultural Development Inventory for educational and organizational use.
- The IDI Compared to Other Cross-Cultural Tools - Many assessment tools claim to measure intercultural competence, global effectiveness, and even cultural intelligence. These instruments are not grounded in a comprehensive, cross-culturally validated theory of intercultural competence.
- Who Uses the IDI - View the partial list of organizations that use IDI including corporations, government & non-profit organizations, colleges & universities, primary & secondary schools.
- External, Prestigious Reviews of the IDI - Evidence of the cross-cultural validity and practical impact of the (IDI®) is found in the remarkably strong support given from a wide range of external, third-party, prestigious associations, journals/books, and cross-cultural, professional organizations.
IDI Products & Pricing - The Intercultural Development Inventory (IDI) assesses intercultural competence—the capability to shift cultural perspective and appropriately adapt behavior to cultural differences and commonalities. Intercultural competence has been identified as a critical capability in a number of studies focusing on overseas effectiveness of international sojourners, international business adaptation and job performance, international student adjustment, international transfer of technology and information, international study abroad and inter-ethnic relations within nations. The Intercultural Development Inventory is a 50-item questionnaire, available online that can be completed in 15–20 minutes.
- Pricing - IDI, LLC offers a wide range of products and services to support Qualified Administrators’ efforts in using the IDI® to build intercultural competence in educational institutions and organizations. The chart here outlines these products, services, and their costs.
- Sample IDI Individual Profile Report - View what a sample IDI Individual Profile Report looks like to understand and use in reference to your own report.
- Sample Intercultural Development Plan - View what a sample IDI Intercultural Development Plan looks like to understand and use in reference to your own report.
- Sample IDI Group Profile Report - View what a sample IDI Group Profile Report looks like to understand and use in reference to your own report.
- Sample IDI Group Administrator Report - View what a sample IDI Group Administrator Report looks like to understand and use in reference to your own report.
IDI Qualifying Seminar - IDI Qualifying Seminars are available for individuals to be trained and licensed as IDI Qualified Administrators to use the Intercultural Development Inventory. The IDI QS is presented by an experienced, licensed IDI Qualified Administrator in three sessions (4.5 hours each) across three days (one session per day).
IDI Validation Research - The Intercultural Development Inventory®, or IDI®, is a widely-used assessment of intercultural competence, with over 60 published articles and chapters and over 66 Ph.D. dissertations. The IDI has been rigorously tested and found to possess high cross-cultural validity and reliability. As a result, validity of the IDI is established not through “face” validity, but, rather, far more rigorous psychometric criteria.
- 2016-2017 IDI Phase 3 Validation Research Summary - Here is a summary of the most recent, independent research, conducted in 2016 and 2017 by ACS Ventures, a nationally recognized leader in psychometric instrument testing and research.
- 2016 IDI Validation ACS Independent Review: Phase 3 - IDI, LLC (IDI) requested an independent review of the current state of the validity evidence associated with the use of IDI Inventory test scores. The IDI Inventory is designed to assess intercultural competence, defined as the “capability to shift cultural perspective and appropriately adapt behavior to cultural differences and commonalities.”
- 2017 IDI Validation ACS Validation Analyses Results: Phase 3 - This report is designed to provide an overview of all of the analyses that have been completed by ACS Ventures, LLC (ACS) for the IDI Inventory.
- 2011 IDI Validation Study: Phase 2 - Additional cross-cultural validity testing of the Intercultural Development Inventory published by the International Journal of Intercultural Relations.
- 2003 IDI Validation Research: Phase 1 - It is the purpose of this article first to review briefly the DMIS; second, to summarize the initial (Phase 1) and then subsequent (Phase 2) final development of the IDI; and third, to conclude with some comments on the potential for applying the concept of intercultural competence and the IDI.
- 2015 The Development Paradigm for Intercultural Competence Research - Reflections and observations with specific focus on the state of research and theory vis-à-vis intercultural competence in terms of the struggle between the mainstream “Cognitive/Affective/Behavioral paradigm” (hereafter referred to as the CAB paradigm) and the alternative, “Developmental paradigm”.
- 2015 Publications Related to the Intercultural Development Inventory (IDI) - Featured is a list of key publications and Ph.D. dissertations related to the Intercultural Development Inventory® (IDI®).
- 2012 IDI’s Impact in International Education - Discussion of intercultural competence development within study abroad and how the work those are doing with the IDI and IDI Guided Development is helping students, faculty, and study abroad professionals achieve increased capability in shifting cultural perspective and adapting behavior across cultural differences.
- 2009 IDI and Global Leadership in Organizations - An analysis of the Intercultural Development Inventory (IDI): An Approach for Assessing and Building Intercultural Competence.
Success Stories - Educational institutions and organizations have achieved demonstrated results through the use of the Intercultural Development Inventory (IDI). This work is grounded in…
- IDI Case Studies - View case study examples of success through an organization’s use of the Intercultural Development Inventory (IDI).
- Testimonials - Browse testimonials from those who have used IDI first hand and worked with our team learning the roadmap to Intercultural Competence using the IDI.
Ph.D. Research Support - We support the use of the Intercultural Development Inventory® (IDI®) in your Ph.D. Dissertation by offering the education tuition rate to Ph.D. candidates to attend the IDI Qualifying Seminar.
Happenings - Stay up to date with news and updates from the Intercultural Development Inventory® (IDI®) team.
IDI Policies & Licensing - View IDI Policies & Licensing.
- IDI License Agreement - THIS 2020 LICENSE AGREEMENT by and between IDI, LLC, the Licensor, and you, is made as of the completion of the IDI® Qualifying Seminar or, with respect to QAs licensed prior to the implementation of the 2020 License, immediately from the date of the notice of this revised 2020 License.
- IDI, LLC Privacy Policy - IDI, LLC and its affiliate, ICS Inventory, LLC respects the privacy and security of your personal information. The following describes how we collect, use and disclose information and what rights you have to it.
- IDI, LLC Terms of Services - Please read these Terms of Service (“Agreement”) carefully. By clicking or tapping “OK” or “Agree” (or a similar term), or by using the Company Services (as defined below), you agree to this Agreement.
- IDI Qualifying Seminar Policies
- IDI, LLC Refund Policies
Accessibility - Intercultural Development Inventory (IDI) is dedicated to providing exceptional service to visitors of all abilities.
- IDI Assessment Accessibility Statement - Intercultural Development Inventory, LLC. takes several measures to ensure accessibility of Intercultural Development Inventory Assessment.
Frequently Asked Questions - The IDI team answers frequently asked questions about intercultural competence using the Intercultural Development Inventory® (IDI®).
Contact Us - Our staff at IDI, LLC is available Monday through Friday, 9:00 a.m. to 5:00 p.m. Eastern Time (Eastern United States Time Zone), and provides email, telephone, and virtual support to ensure your success in using the IDI in your workplace or practice. For support, please click Help in the bottom corner of the page or call (240) 389-1482.
IDI Help Center - The IDI Help Center is the IDI knowledge base with numerous articles and resources available.

About Us

Intercultural Development Inventory › About Us

IDI, LLC manages the Intercultural Development Inventory^® (IDI^®), idiinventory.com. IDI, LLC is a division of Hammer Holdings, Inc., a company that also includes ICS Inventory, LLC — offering the Intercultural Conflict Style^® (ICS^®) Inventory, icsinventory.com. These two companies offer unique products, services, and visionary global solutions for the advancement of cultural competence and intercultural conflict resolution.

The principal officers of Hammer Holdings, Inc. are Diann Hammer, Mitchell R. Hammer, Ph.D., Neil Hammer, and Lea Hammer who also operate their affiliate companies, IDI, LLC and ICS Inventory, LLC.

IDI, LLC offers customized, assessment services to build intercultural competence within educational institutions, government agencies, NGOs, corporations, and other organizations. We offer these services by:

Providing state-of-the art IDI assessment expertise to various client organizations
Offering IDI Qualifying Seminars within the U.S. and internationally to certify individuals to effectively use the IDI for building intercultural competence at the individual and team levels

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An Introduction to the Intercultural Development Inventory
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Workplace Impact of the Intercultural Development Inventory
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Practical Applications of the Intercultural Development Inventory

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