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The Sibling Interaction and Behavior Study (SIBS) is a study of >600 adoptive and non-adoptive families. [1] The adoption study design allows one to disentangle the environmental and genetic influences on a phenotype, including psychological phenotypes. The assessment wave structure and protocol are similar to the Minnesota Twin Family Study ...
Both tests and studies have been conducted as to how siblings interact and how age, gender, and the number of siblings can create a triad. A majority of the population has doubled over the last decade and recently has been proven that the more parents conceive, the better outcome a child will have when relating to other siblings.
The Michigan Leadership Studies were the well-known series of leadership studies commenced at the University of Michigan in the 1950s by Rensis Likert, with the objective of identifying the principles and types of leadership styles that led to greater productivity and enhanced job satisfaction among workers. [1]
The social interaction that occurs as a result of birth order however is the most notable. Older siblings often become role models of behaviour, and younger siblings become learners and supervisees. Older siblings are at a developmental advantage both cognitively and socially.
Consideration and initiating structure are two dimensions of leader behavior identified in 1945 as a result of the Ohio State Leadership Studies.Reviews of research on these dimensions are described in Stogdill's Handbook of leadership: A survey of theory and research and Littrell's Explicit leader behaviour.
In reviewing the older leadership theories, Scouller highlighted certain limitations in relation to the development of a leader's skill and effectiveness: [3] Trait theory: As Stogdill (1948) [4] and Buchanan & Huczynski (1997) had previously pointed out, this approach has failed to develop a universally agreed list of leadership qualities and "successful leaders seem to defy classification ...
The Vertical Dyad Linkage Theory is a theory that deals with the individual dyadic relationships formed between leaders and their subordinates. [1] It is also widely known as The Leadership-Member Exchange (LMX) Theory. [2] Originally, the theory has been developed by Fred Dansereau, George Graen and William J. Haga, in 1975. [3]
Situational Leadership Theory, now named the Situational Leadership Model, is a model created by Dr. Paul Hersey and Dr. Ken Blanchard, developed while working on the text book, Management of Organizational Behavior. [1] The theory was first introduced in 1969 as "Life Cycle Theory of Leadership". [2] During the mid-1970s, Life Cycle Theory of ...