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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 ...
The Michigan leadership studies, along with the Ohio State University studies that took place in the 1940s, are two of the best-known behavioral leadership studies and continue to be cited to this day. These theories attempt to isolate behaviours that differentiate effective leaders from ineffective leaders.
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 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.
A meta-analysis (Burke et al., 2006) conducted in 2006 integrated a wide spectrum of theoretical and empirical studies, and looked at the effects of leadership behaviors through multiple dimensions, including breaking down the specifics of task-oriented and relationship-oriented leadership into subgroups such as "initiating structure ...
Functional leadership theory (Hackman & Walton, 1986; McGrath, 1962) is a theory for addressing specific leader behaviors expected to contribute to organizational or unit effectiveness. This theory argues that the leader's main job is to see that whatever is necessary to group needs is taken care of; thus, a leader can be said to have done ...
Functional leadership theory [67] addresses specific leader behaviors that contribute to organizational or unit effectiveness. This theory argues that the leader's main job is to see that whatever is necessary to group needs is taken care of; thus, a leader can be said to have done their job well when they have contributed to group ...
According to the findings of these studies, leaders exhibit two types of behaviors to facilitate goal accomplishment: People-oriented (consideration) Task oriented (initiating structure) The model is similar to the Michigan Studies of Leadership. In his Handbook, Stogdill expanded the model to twelve dimensions.