Looking at the history of intervention research, Kurt Lewin needs to be shortly introduced. He is looked at as the originator of action research and group dynamics (Adelman, 1993; Schwarz, 2015) which already demonstrate a high linkage between the two fields. However, Lewin might be more known as social psychologist that developed the field theory. In the field theory, Lewin already examined human social behaviour in groups that was either shown in direct actions or emotional expressions.
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