David C. McClelland (May 20, 1917 – March 27, 1998) was an American psychological theorist. Noted for his work on need theory, he published a number of works from the 1950s until the 1990s and developed new scoring systems for the Thematic Apperception Test and its descendants. Biography - David C. McClelland retrieved June 24, 2008 McClelland is credited with developing the Achievement Motivation Theory commonly referred to as need achievement or n-achievement theory.
09.12.2010 Then, in the early 1960s, DavidMcClelland built on this work by identifying three motivators that we all have. According to McClelland, these motivators are learned (which is why this theory is sometimes called the Learned Needs Theory).