This paper analyzes the major historical milestones in the study of normal and abnormal personality, from antiquity up until the 20th century. Special attention is paid to the interaction between dimensional and typological approaches, which was a major issue during the preparation of DSM-5. Theories of personality started with the humoral theory of Greek medicine. Pinel, and later Esquirol and...

A “slingshot” proof suggested by Kurt Gödel (1944) has been recast by Stephen Neale (1995) as a deductive argument showing that no non-truthfunctional sentence connective can permit the combined use, within its scope, of two truth-functionally valid inference principles involving definite descriptions. According to Neale, this result provides indirect support for Russell’s Theory of Description...

Few people have had as profound an impact on the theory and practice of social and organizational psychology as Kurt Lewin. Though I never knew him personally, I was fortunate during my graduate school years at Harvard’s Social Relations Department in 1949–1950 to have been exposed to Alex Bavelas and Douglas McGregor who, in my mind, embodied Lewin’s spirit totally. As I try to show in this es...

In 2008, Ford et al. (2008) pointed out for management research, that “it is time to expand our understanding of resistance to change”. Since 1947, when Kurt Lewin discuss the first time the concept of resistance to change within his field theory, managerial psychology researchers have extended, criticized, modified and re-conceptualized the understanding of employees‟ responses to change initi...

In 2008, Ford et al. (2008) pointed out for management research, that “it is time to expand our understanding of resistance to change”. Since 1947, when Kurt Lewin discuss the first time the concept of resistance to change within his field theory, managerial psychology researchers have extended, criticized, modified and re-conceptualized the understanding of employees‟ responses to change initi...