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
John Adair (surveyor) work. Twelve manuscript maps survive from his work at this time, covering the Lothians, Stirling, Fife, Kinross and southern Perthshire. Unfortunately, financial and other difficulties hampered much of John Adair's map making, and not only were very few of his maps engraved during his lifetime, but most of his manuscript maps were destroyed by fire in 1811. However, a few of his county maps were engraved and printed by Richard Cooper in the 1730s. John Adair (surveyor) John Adair (1660–1718) was a Scottish surveyor and cartographer, noted for the excellence of his maps. He first came to public notice in