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Systems thinking

 

Systems thinking is a way of looking at organizations that emphasizes the interconnections between parts of an organization and external environments. It is also a method for solving organizational problems and helping organizations change. Systems thinking is especially appropriate in the field of public health because public health managers and leaders work in large, complex organizations whose success depends upon the cooperation of other organizations and institutions. As applied to organizations, systems thinking was made popular by Peter Senge's 1994 book, The Fifth Discipline; but a systems approach is also the basis of theories in many fields, from biology to psychology.

The central concepts in systems thinking are interconnections, feedback, and time delays. Systems thinking encourages managers to identify the larger pattern of interconnections, or causal links, of which problems are a part. Thus, a problem to solve is seen as a symptom of an underlying pattern. Feedback refers to the kind of cause-and-effect relationship found among system elements. Systems thinking proponents identify two types of cause-and-effect relationships, reinforcing and balancing relations. An example of a reinforcing relationship is when, as staff workload increases, so also does job dissatisfaction, which leads to absenteeism, which in turn leads to even higher workloads. An example of a balancing relation is the short–term solution of rewarding individual high performers on the staff. The effect seems to be that morale improves and absenteeism goes down. The concept of time delays must be factored in, however, for in the long run, individual rewards pit staff members against each other, lowering morale and aggravating the underlying problem, which in this case might be excessive workloads and lack of team development.

Interorganizational relations also exhibit system properties. For example, public health managers often rely on coalitions of citizens and local organizations to achieve community health goals. Systems thinking directs the public health manager's attention to the pattern of interconnections between organizations and citizen groups that lead to the success, or failure, of initiatives.

(SEE ALSO: Community Organization; Leadership; Planning for Public Health)

Bibliography

Kauffman, D. L. (1980). Systems One: An Introduction to Systems Thinking. Minneapolis, MN: S. A. Carlton.

Senge, P. M. et al. (1994). The Fifth Discipline Fieldbook: Strategies and Tools for Building a Learning Organization. New York: Doubleday.

— JOHN C. LAMMERS



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Wikipedia: Systems thinking
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Systems thinking is any process of estimating or inferring how local policies, actions, or changes influence the state of the neighboring universe. It also can be defined, as an approach to problem solving, as viewing "problems" as parts of an overall system, rather than reacting to present outcomes or events and potentially contributing to further development of the undesired issue or problem.[1] Systems thinking is a framework that is based on the belief that the component parts of a system can best be understood in the context of relationships with each other and with other systems, rather than in isolation. The only way to fully understand why a problem or element occurs and persists is to understand the part in relation to the whole.[2] Standing in contrast to Descartes's scientific reductionism and philosophical analysis, it proposes to view systems in a holistic manner. Consistent with systems philosophy, systems thinking concerns an understanding of a system by examining the linkages and interactions between the elements that compose the entirety of the system.

Systems thinking attempts to illustrate that events are separated by distance and time and that small catalytic events can cause large changes in complex systems. Acknowledging that an improvement in one area of a system can adversely affect another area of the system, it promotes organizational communication at all levels in order to avoid the silo effect. Systems thinking techniques may be used to study any kind of system — natural, scientific, engineered, human, or conceptual.

Contents

The concept of a system

Both systems thinkers and futurists consider that:

  • a system is a dynamic and complex whole, interacting as a structured functional unit;
  • energy, material and information flow among the different elements that compose the system;
  • a system is a community situated within an environment;
  • energy, material and information flow from and to the surrounding environment via semi-permeable membranes or boundaries;
  • systems are often composed of entities seeking equilibrium but can exhibit oscillating, chaotic, or exponential behavior.

A holistic system is any set (group) of interdependent or temporally interacting parts. Parts are generally systems themselves and are composed of other parts, just as systems are generally parts or holons of other systems.

Systems and the application of systems thinking has been grouped into three categories based on the techniques used to tackle a system:

  • Hard systems — involving simulations, often using computers and the techniques of operations research. Useful for problems that can justifiably be quantified. However it cannot easily take into account unquantifiable variables (opinions, culture, politics, etc), and may treat people as being passive, rather than having complex motivations.
  • Soft systems — For systems that cannot easily be quantified, especially those involving people holding multiple and conflicting frames of reference. Useful for understanding motivations, viewpoints, and interactions and addressing qualitative as well as quantitative dimensions of problem situations. Soft systems are a field that utilizes foundation methodological work developed by Peter Checkland, Brian Wilson and their colleagues at Lancaster University. Morphological analysis is a complementary method for structuring and analysing non-quantifiable problem complexes.
  • Evolutionary systems — Béla H. Bánáthy developed a methodology that is applicable to the design of complex social systems. This technique integrates critical systems inquiry with soft systems methodologies. Evolutionary systems, similar to dynamic systems are understood as open, complex systems, but with the capacity to evolve over time. Bánáthy uniquely integrated the interdisciplinary perspectives of systems research (including chaos, complexity, cybernetics), cultural anthropology, evolutionary theory, and others.

The systems approach

The systems thinking approach incorporates several tenets:[3]

  • Interdependence of objects and their attributes - independent elements can never constitute a system
  • Holism - emergent properties not possible to detect by analysis should be possible to define by a holistic approach
  • Goal seeking - systemic interaction must result in some goal or final state
  • Inputs and Outputs - in a closed system inputs are determined once and constant; in an open system additional inputs are admitted from the environment
  • Transformation of inputs into outputs - this is the process by which the goals are obtained
  • Entropy - the amount of disorder or randomness present in any system
  • Regulation - a method of feedback is necessary for the system to operate predictably
  • Hierarchy - complex wholes are made up of smaller subsystems
  • Differentiation - specialized units perform specialized functions
  • Equifinality - alternative ways of attaining the same objectives (convergence)
  • Multifinality - attaining alternative objectives from the same inputs (divergence)

Some examples:

  • Rather than trying to improve the braking system on a car by looking in great detail at the material composition of the brake pads (reductionist), the boundary of the braking system may be extended to include the interactions between the:
  • brake disks or drums
  • brake pedal sensors
  • hydraulics
  • driver reaction time
  • tires
  • road conditions
  • weather conditions
  • time of day
  • Using the tenet of "Multifinality", a supermarket could be considered to be:
  • a "profit making system" from the perspective of management and owners
  • a "distribution system" from the perspective of the suppliers
  • an "employment system" from the perspective of employees
  • a "materials supply system" from the perspective of customers
  • an "entertainment system" from the perspective of loiterers
  • a "social system" from the perspective of local residents
  • a "dating system" from the perspective of single customers

As a result of such thinking, new insights may be gained into how the supermarket works, why it has problems, how it can be improved or how changes made to one component of the system may impact the other components.

Applications

Systems thinking is increasingly being used to tackle a wide variety of subjects in fields such as computing, engineering, epidemiology, information science, health, manufacture, management, and the environment.

Some examples:

See also

Bibliography

References

  1. ^ O'Connor, J. & McDermott, I. (1997). The Art of Systems Thinking: Essential Skills for Creativity and Problem-Solving. San Francisco: Thorsons Publishing. p. 11.
  2. ^ Capra, F. (1996) The web of life: a new scientific understanding of living systems (1st Anchor Books ed). New York: Anchor Books. p. 30
  3. ^ Skyttner, Lars (2006). General Systems Theory: Problems, Perspective, Practice. World Scientific Publishing Company. ISBN 9-812-56467-5. 

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Copyrights:

Encyclopedia of Public Health. Encyclopedia of Public Health. Copyright © 2002 by The Gale Group, Inc. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Systems thinking" Read more