You can locate biographical information in:
When looking for biographies, try searching for theorist name AND biography.
For example, if I was looking for biographical information on Kurt Lewin in the library catalog, I would search for Kurt Lewin and biography. If you are in a database that specializes in biographies, you may just need to put the theorist's name.
Why search here? Good for succinct overviews of a wide variety of subjects and topics, provided through reference articles drawn from encyclopedias and other reference sources.
Content type: Encyclopedia articles, biographical information, dictionary entries, videos, images
Includes full-text biographical information on more than one million people from throughout history, around the world, and across all disciplines and subject areas.
Information on the lives of over 19,000 people from all eras who have influenced and shaped American history and culture. Ranges in time from the earliest recorded European explorations to the very recent past.