In 1969 Clayton Alderfer published in the Psychological Review an article entitled “An Empirical Test of a New Theory of Human Need”. He expanded Maslow’s Hierarchy of Needs by defining three categories in his ERG theory: Existence Needs: physiological and safety needs Relatedness Needs: social and external...
read morePsychologist David McClelland has developed a Theory of Needs that focuses not on the hierarchical relationship between them ( Maslow & Alderfer) but on how the needs are shaped over time and how they manifest as a motivational pattern. Categories: Achievement (n Ach) with the following characteristics: A preference for...
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