Managing Potential Health Risks from Electric Powerlines: A Decision Analysis Caught in Controversy

Over the past 20 years, several epidemiological studies have found an association between exposure to electromagnetic fields (EMFs) and health effects, including childhood leukemia and adult brain cancer. However, experts strongly disagree about whether this association is causal and, if so, how strong it is. In this article, we examine several alternatives to reduce EMFs from sources of the California power grid, including undergrounding distribution and transmission lines and reconfiguring or rephasing lines. The alternatives were evaluated in terms of the potential health risk reduction, cost, impacts on service reliability, property values, and many other consequences. Because of the uncertainty about an EMF-health link, the main effort was to determine the sensitivity of the decisions to the probability and seriousness of an EMF hazard. User-friendly computer models were developed to allow stakeholders to change the model assumptions and parameters to analyze the impacts of their own assumptions and estimates on the decision. The analysis clearly demonstrated that only four of the many concerns raised by the stakeholders could make a difference in the decision: health risks, costs, service reliability, and property values. Whether undergrounding, moderate alternatives for EMF reduction, or no change was the best decision depended on a few key factors, including the probability that EMF exposure is a hazard, the severity of this hazard, how the EMF reduction measures are financed, and the impacts on property values. While the analysis did not resolve the EMF issues, it showed that even in the most controversial settings, a little analysis goes a long way to clarifying the issues and to focus the debate.     

Interaction Theory in the Federal Republic of Germany: Development,Current Position,Themes, and Problems

After the end of World War II in West Germany, action and interaction theories and phenomenological sociology occupied only fringe positions. At the end of the 1960s, criticism of the prevalent neopositivistic research methodology, systems theory, and the rapidly spreading critical theory increased. This, coupled with the positive reception given symbolic interactionism and ethnomethodology from the United States, caused interaction theories to flourish. Today they are among the four or five main schools of thought in West German sociology. In methodological work, the “interpretative” or “communicative” social research of the time developed the narrative interview and life history method. Group discussion and participant observation were also used for interactionist social research. A survey of the subjects interactionists have covered in their research shows how widely interaction theory has been applied. The main themes of current interaction theory are: (1) conceptualizing the difference between unpremeditated behavior and meaningful action, (2) formulating a theory that covers both “structure” and “action”, and (3) developing an interactionist macro theory. The future of interaction theory is analyzed and assessed optimistically.     

Führung aus neuer Perspektive

New perspectives on leadership. Reflecting and constructing realities in the surplus reality of psychodramaThe authors show how the psychodramatic concept of surplus reality can be used as a frame of reference for action-oriented, experiential interventions in leadership coaching. The concept is shown to have four different facets: surplus reality as a term for (1) the intangible dimensions of reality, (2) the non-verbal dimensions of reality, (3) the action space of psychodrama, (4) human imagination. The use of mental imagery and metaphors is shown to be a realization of the surplus reality principle. Case studies and practical hints for leadership coaches illustrate how surplus reality can be used to open up new ways of learning.