# Development Dimensions International

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{{Short description|US-based human resources company}}
{{More citations needed|date=July 2009}}
{{Infobox company
| name = DDI (Development Dimensions International)
| logo = 
| caption = 
| type = Privately held company
| industry = [Human resource consulting](/source/Human_resource_consulting), [Talent management](/source/Talent_management)
| founded = 1970
| defunct = 
| hq_location = 
| hq_location_city = [Pittsburgh, PA](/source/Pittsburgh%2C_PA)
| num_locations =  26 countries
| area_served = Worldwide
| key_people = 
[William C. Byham](/source/William_C._Byham), Founder <br>
Douglas Bray, Founder <br>
Tacy M. Byham, CEO <br>
David Tessmann-Keys, President
| services = 
| revenue = 
| operating_income = 
| net_income = 
| num_employees = 1,100 employees
| parent = 
| divisions = 
| subsidiaries = 
| footnotes = 
| hq_location_country = USA
| website = {{URL|www.ddi.com}}
}}

'''Development Dimensions International''' (DDI) is an international [human resources](/source/human_resources) and leadership development consultancy. DDI works with organizations to make changes related to [leadership development](/source/leadership_development), leadership selection, succession management, and execution and [performance](/source/Performance_management).

The company is headquartered in Pittsburgh, Pennsylvania and has more than 1,100 employees throughout 42 offices in 26 countries. [William C. Byham](/source/William_C._Byham), is chairman, Tacy M. Byham is CEO, and David Tessmann-Keys is president.

== Company Overview ==
DDI was founded in 1970 by William C. Byham, and Douglas Bray. DDI introduced the assessment center<ref>{{Cite web|url = http://www.ddiworld.com/DDI/media/monographs/AssessmentCenterMethods_mg_ddi.pdf?ext=.pdf|title = The Assessment Center Method and Methodology: New Applications and Technologies|date = |accessdate = |website = |publisher = |last = Byham|first = William}}</ref> approach for identifying leadership skills.  Byham’s article, ''Assessment Centers for Spotting Future Managers''<ref>{{Cite book|title = Assessment Centers for Spotting Future Managers|url = https://books.google.com/books?id=sHZungEACAAJ|publisher = Harvard Business Review Reprint Service|date = 1970-01-01}}</ref> (''[Harvard Business Review](/source/Harvard_Business_Review)),'' led to inquiries about the process, and later, Byham approached Bray about a partnership.

DDI later branched out into leadership development. It introduced a leadership development program based on behavior modeling: Interaction Management. DDI next created a stand-alone behavioral interviewing system, Targeted Selection, which ensures compliance with [Equal Employment Opportunity](/source/Equal_Employment_Opportunity_Commission) laws.{{citation needed|date=December 2015}}

DDI’s also works on new HR technology, methodology, and content, including mid- and senior-level development, online assessment for frontline and mid-level leaders, and best practices for succession management.

== Selected publications==
* ''Your First Leadership Job: How Catalyst Leaders Bring Out the Best in Others''<ref>{{Cite book|title = Your First Leadership Job: How Catalyst Leaders Bring Out the Best in Others|publisher = Wiley|year = 2015|isbn = 9781118911952}}</ref> by Tacy M. Byham, Ph.D., and Richard S. Wellins, Ph.D. 
* ''Grow Your Own Leaders''<ref>{{Cite book|title = Grow Your Own Leaders: How to Identify, Develop, and Retain Leadership Talent|publisher = FT Press|year = 2002|isbn = 9780130093981|url-access = registration|url = https://archive.org/details/growyourownleade00will}}</ref> ''by William Byham, Ph.D.''
* ''Realizing the Promise of Performance Management''<ref>{{Cite book|title = Realizing the Promise of Performance Management|last = Rogers|first = Robert W.|publisher = DDI Press|year = 2004|isbn = 0976151413}}</ref> by Robert W. Rogers.
* ''Zapp'' ''The Lightning of Empowerment''<ref>{{Cite book|title = Zapp! The Lightning of Empowerment: How to Improve Quality, Productivity, and Employee Satisfaction|last = Byham|first = William|publisher = Random House|year = 1988|isbn = 0449002829}}</ref> by William Byham, Ph.D., which has sold more than 4.5 million copies to date.{{citation needed|date=December 2015}}
* Seventh edition of DDI’s Global Leadership Forecast.<ref>{{Cite web|url = http://www.ddiworld.com/DDI/media/trend-research/global-leadership-forecast-2014-2015_tr_ddi.pdf?ext=.pdf|title = Ready-Now Leaders: 25 Findings to Meet Tomorrow's Business Challenges|date = |accessdate = |website = |publisher = |last = |first = }}</ref> Presented with [The Conference Board](/source/The_Conference_Board).
* "Global Selection Forecast 2012: Know More. Guess Less."<ref>{{Cite web|url = http://www.ddiworld.com/ddi/media/trend-research/globalselectionforecast2012_tr_ddi.pdf?ext=.pdf|title = Global Selection Forecast 2012: Know More. Guess Less.|date = |accessdate = |website = |publisher = |last = |first = }}</ref> Conducted in partnership with [Oracle.](/source/Oracle_Corporation)

== References ==
{{Reflist}}

{{Authority control}}

Category:Consulting firms established in 1970
Category:Companies based in Pittsburgh
Category:1970 establishments in Pennsylvania
Category:1970 establishments in the United States

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Adapted from the Wikipedia article [Development Dimensions International](https://en.wikipedia.org/wiki/Development_Dimensions_International) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Development_Dimensions_International?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.