Categories
Theorists

Dorothy E. Johnson

Dorothy E. Johnson
Dorothy E. Johnson

Behavioral System Model (1959,1968,1974,1980)

Person/Client:

A behavioral system composed of seven subsystems: affiliative, achievement, dependence, aggressive, eliminative, ingestive, and sexual.

Environment:

Consists of all factors that are not part of the individual’s behavioral system but that influence the system and some of which can be manipulated by the nurse to achieve the health goal of the client. The individual links to and interacts with the environment.

Health:

Health is an elusive, dynamic state of influenced by biologic, psychologic, and social factors. Health is reflected by the organization, interdependence, and integration of the subsystem. Human attempt to achieve a balance in this system; this balance leads to functional behavior. A lack of balance in the structural or functional requirements of the subsystem leads to a poor health.

Nursing:

An external regulatory force that acts to preserve the organization and integration of the client’s behavior at an optimal level under those conditions in which the behavior constitutes a threat to physical or social health or in which illness is found.

 

Johnson’s Behavioral System Model

Dorothy Johnson used her observations of behavior over many years to formulate a general theory of man as a behavioral system. The theory was originally presented orally in 1968 but was not published until 1980. Johnson defines a system as a whole that functions as a whole by virtue of the interdependence of its parts. Individuals strive to maintian stability and balance in these parts through adjustments and adaptations to the forces that impinge on them. A behavioral system is patterned, repetitive, and purposeful.

Johnson’s key concepts describe the individual  as a behavioral system composed of seven subsystems:

1. The attachment-affiliative subsystem provides survival and security. Its consequences are social inclusion, intimacy, and the formation and  maintenance of a strong social bond.

2. The dependency subsystem promotes helping behavior that calls for a nurturing response. Its consequences are approval, attention or recognition, and p[physical assistance.

3. The ingestive subsystem satisfies appetite. It is governed by social and psychologic considerations as well as biologic.

4. The eliminative subsystem excrete body wastes.

5. The sexual subsystem functions dually for procreation and gratification.

6. The achievement subsystem attempts to manipulate the environment. It controls or masters an aspect of the self or environment to some standard of excellence.

7. The aggressive subsystem protects and preserves the self and society within the limits imposed by society.

Each of the above subsystem has the same functional requirements: protection, nurturance, and stimulation. The subsystems’ responses are developed through motivation, experience, and learning and are influenced by biopsychosocial factors.

Other concepts associated with Johnson’s model are equilibrium, a stabilized more or less transitory resting state in which the individual is in harmony with the self and the environment; tension, a state of being stretched or strained; and stressors, internal or external stimuli that produce tension ans result in a degree of instability.

 

Reference:

Kozier, Barbara Fundamental of Nursing 5th edition

Addison-Wesley Publishing Company, Inc 1998 p.49

Categories
Theorists

Betty Neuman

Betty Neuman
Betty Neuman

Health Care System Model

(1972,1974,1980,

1982,1989)

Person/Client:

Open system consisting of a basic structure or central core of survival factors surrounded by concentric rings that are bounded by lines of resistance , a normal line of defense, and a flexible line of defense. The total person is a composite of physiologic, psychologic, sociocultural, and developmental variables.

Environment:

Both internal and external environments exists and a person maintains varying degrees of harmony and balance between them. It is all factors affecting and affected by the system.

Health:

Wellness is the condition in which all parts and sub-parts of an individual are in harmony with the whole system. Wholeness is based on interrelationships of variables that determine the resistance of an individual to any stressor. Illness indicates lack of harmony among the parts and sub-parts of the system of the individual. Health is viewed as a point along a continuum from wellness to illness; health is dynamic. Optimal wellness or stability indicates that all a person’s needs are being met. A reduced state of wellness is the result of unmet systemic needs. The individual is in a dynamic state of wellness-illness, in varying degrees, at any given time.

 

Neuman’s Health Care Systems Model

Betty Neuman’s systems model, first published in 1972, is based on the individuals relationship to stress, the reaction to it, and reconstitution factors that are dynamic in nature. Reconstitution is the state of adaptation to stressors.

Neuman views the client as an open system consisting of a basic structure or central core of energy sources surrounded by two concentric boundaries or rings referred to as lines of resistance. The two lines of resistance represent internal factors that help the client defend against a stressor. The inner or normal line of defense represents the person’s state of equilibrium of the state of adaptation developed and maintained over time  and considered normal for that person. The flexible line of defense is dynamic and can be rapidly altered over a short period of time. It is a protective buffer that prevents stressors from penetrating  the normal line of defense.

The nurse’s focus is all the variables affecting an individual’s response to stressors. Nursing interventions are carried out on three preventive levels:

1. Primary prevention identifies risk factors, attempts to eliminate the stressor, and focuses on protecting the normal line of defense and strengthening the flexible line of defense. A reaction has not yet occurred, but the degree of risk is known.

2. Secondary prevention relates to interventions or active treatment initiated after symptoms have occurred. The focus is to strengthen internal lines of resistance, reduce the reaction, and increase resistance factors.

3. Tertiary prevention refers to intervention following that in the secondary stage. It focuses on readaptation and stability and protects reconstitution or return to wellness follwing treatment. The nurse emphasizes educating the client in strengthening resistance to stressors and ways to help prevent recurrence of reaction or regression.

Betty Neuman’s model of nursing has been widely accepted by the nursing community, nationally and internationally. it is applicable to a variety of nursing practice settings involving individuals, families, groups, and communities.

Reference:

Kozier, Barbara et.al Fundamentals of Nursing 5th edition

Addison-Wesley Publishing Company, Inc.1998 p.49