Clayton Alderfer

Clayton Alderfer was a psychologist known for developing the ERG theory of motivation, which simplifies understanding what drives people. Unlike earlier models that viewed needs as hierarchical (like Maslow's pyramid), Alderfer's ERG theory categorizes human needs into three overlapping groups: Existence (basic material and safety needs), Relatedness (social connections and relationships), and Growth (personal development and achievement). People can pursue multiple needs simultaneously and may regress to earlier needs if higher needs aren't met. This flexible approach provides a more realistic understanding of motivation in diverse life and work situations.