Kurt Lewin from a leader. Members are given choices and collectively decide the division of labor. Praise and criticism in such an environment are objective, fact minded and given by a group member without necessarily having participated extensively in the actual work. Laissez-faire environments give freedom to the group for policy determination without any participation from the leader. The leader remains uninvolved in work decisions unless asked, does not participate in the division of labor, and very infrequently gives praise. An early model of change developed by Lewin described change as a three-stage process. The first stage he called "unfreezing". It involved
Elhanan Tannenbaum Elhanan Tannenbaum Elhanan Tannenbaum, (, born 12 August 1946) is a former reserve colonel in the Israel Defense Forces and businessman, who was kidnapped in 2000 and held for more than three years by the Lebanese militant group Hezbollah. Elhanan Tannenbaum was born in Poland, the son of Holocaust survivors. Most of his relatives had been killed in the Holocaust. In 1949, Tannenbaum and his parents and sister immigrated to Israel and moved to Holon, where Tannenbaum grew up and attended high school. He was also active in the local scouts movement. At the age of 18, Tannenbaum enrolled in