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BIODATA-250 Technical Manual

Many of our advanced assessment batteries use an exercise called the BIODATA-250, which measures a wide range of attitudes, traits, and abilities. BIODATA stands for Biographical Information About Occupationally-Descriptive
Attitudes, Traits, And Abilities. Dr. Ralph Hakstian has written an extensive manual describing the goals, research, methodology, dimensions, and validity of the instrument. Please see the full article.

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