Comprehensive Study Guide to Theoretical Foundations of Nursing and Nursing Theorists

Theoretical Foundations of Nursing

Concepts are the fundamental building blocks of theories. They represent a mental formulation of an object or event derived from individual perceptual experience. A concept is a generalized idea of a group of objects or an abstract idea generalized from several specific instances; it serves as a mental picture or image of a specific phenomenon. Concepts are classified into two categories: abstract and concrete. Abstract concepts are indirectly observable, independent of time or place, and are often difficult to understand. Concrete concepts are specific to a particular time and place, are observable, real, and perceptible by the senses through experience.

A theory is defined as a group of related concepts that propose actions to guide practice. It is a set of concepts, definitions, relationships, and assumptions that project a systematic view of phenomena. Furthermore, it is an organized system of accepted knowledge composed of concepts, propositions, assumptions, and definitions intended to explain a set of facts, events, or phenomena. A phenomenon is an aspect of reality that can be consciously sensed or influenced, representing an empirical data point or observable event. A proposition is a statement that proposes a specific relationship between concepts. Definitions within a theory are composed of various descriptions that convey a general meaning and reduce vagueness in understanding. An assumption is a proposition taken for granted as true based on presupposition without a preponderance of facts; it is a statement the theorist holds as factual, specifying connections between concepts. A principle is a basic law, truth, or assumption from which others are derived. A conceptual framework, often used interchangeably with "conceptual model" or "grand theories," is a group of related ideas, statements, or concepts.

Paradigm and Metaparadigm Conceptions

A paradigm serves as an organizing framework containing concepts, theories, assumptions, beliefs, values, and principles that shape how a discipline interprets its subject matter. For example, Freud’s structure of the mind, consisting of the id, ego, and superego, serves as a conceptual structure. A metaparadigm specifies the main concepts that encompass the subject matter and the scope of a discipline, providing the necessary boundaries and limitations. In the discipline of nursing, there are four major metaparadigm concepts: Person, Environment, Health, and Nursing.

The Person refers to the individual, family, or group who is the interest of nursing and the recipient of care. This includes individual clients, families, and communities. Health is the goal of nursing care and is defined as a state of well-being. It is dynamic and continuously changing, with definitions varying by client, clinical setting, and the health care profession. Environment includes the internal and external surroundings that affect the client, encompassing all conditions and settings in which health care needs occur, such as the home, school, workplace, or community. It describes the world a person lives in and interacts with. Nursing is the discipline from which client care interventions are provided, involving the diagnosis and treatment of human responses to actual or potential health problems. It describes the actions and interactions of the nurse with the person.

Components and Purposes of Nursing Theories

A theory consists of six primary components: purpose, concepts, models, theoretical statements, structure, and assumptions. The purpose of a theory explains why it was formulated and specifies the context for its application, which may include describing, explaining, predicting, or prescribing. Theoretical statements, or propositions, describe the relationship between two or more concepts and are used to connect them to devise the theory. Structure and linkages offer reasoned explanations for why variables are connected, bringing plausibility to the theory through the determination of relationship order, central relationships, and the quality of those relationships. Models are schematic representations of reality that illustrate the processes through which outcomes occur in a graphic form, allowing for examination of inconsistency or errors. Assumptions are notations taken to be true without proof.

Nursing theories serve essential roles across education, research, and clinical practice. In education, they prepare students for professional practice and help them understand how nursing roles fit together while providing a focus for curriculum design and decision-making. In research, theories offer a framework for generating knowledge and new ideas, helping to identify knowledge gaps through a systematic approach to identifying questions. In clinical practice, theories guide critical thinking, represent the status of nursing as a discipline, and provide a framework for assessment, intervention, and evaluation. They assist nurses in describing and predicting everyday experiences, providing a rationale for collecting valid data, establishing quality measurement criteria, building common terminology, and enhancing nursing autonomy.

Classification of Nursing Theories

Nursing theories are categorized based on their complexity, abstractness, and scope into Grand Theories, Middle Range Nursing Theories, and Practice Theories. Grand theories provide a comprehensive and global viewpoint of all aspects of human experience. They are nonspecific with general applications across the discipline regardless of setting. Their concepts are abstract and not operationally defined, and their propositions are not always explicit or generally testable. They are developed through thoughtful appraisal over many years.

Middle range theories are less comprehensive than grand theories and offer a middle view of reality. They have some generalizability across settings but remain more specific than grand theories. They feature a limited number of concepts that are fairly concrete and may be operationally defined. Their propositions are clearly stated and may generate testable hypotheses. These theories evolve from grand theories, clinical practice, literature reviews, or practice guidelines. Practice theories focus on a narrow view of reality and are simple and straightforward. They are linked to specific populations or identified fields of practice. Their concepts are single and concrete, and their outcomes are defined and testable. They are derived from practice or deduced from middle range or grand range theories.

Florence Nightingale: Environmental Theory

Florence Nightingale, known as the Lady with the Lamp, the Mother of Modern Nursing, the first nurse researcher, and the first nurse theorist, became a heroine during the Crimean War. At Scutari, she fought the bureaucracy for basic supplies like food, bandages, and fresh bedding, often using her own finances. She established landmarks such as laundries, libraries, and banking systems for soldiers, and later founded nursing schools. Her theory focuses on manipulation of the patient's surroundings, viewing disease as a reparative process.

Nightingale’s environmental theory is defined by several canons. Ventilation and warmth require checking room and body temperature to keep rooms well-ventilated and odor-free. Light involves ensuring adequate sunlight, which is beneficial to the patient, without placing them in direct light. Cleanliness involves keeping the room free from dust, dampness, and dirt. The Health of Houses canon requires checking the surrounding environment for fresh air, pure water, drainage, and cleanliness. Noise management involves keeping the noise level to a minimum. Bed and Bedding must be kept dry, wrinkle-free, and at the lowest height for comfort. Personal cleanliness requires keeping the patient dry and clean at all times and assessing skin integrity. Variety is accomplished through cards, flowers, pictures, books, and stimulating social activities. Chattering hopes and advices warns against giving advice without facts and emphasizes respecting the patient as a person. Taking food requires monitoring the amount of food and fluid ingested. Petty management ensures continuity of care through documentation and evaluation. Observation of the Sick involves recording everything about the patient and environment to adjust the plan of care.

In Nightingale's metaparadigm, the Person is a patient with vital reparative powers who responds to the environment. Health is being well and using every power to the fullest extent, focusing on the reparative process. Environment represents all external elements affecting the health of the individual. Nursing is the act of placing the individual in the best condition for nature to act.

Virginia Henderson: Nursing Definition and 14 Human Needs

Virginia Henderson, referred to as the American Florence Nightingale and the First Lady of Nursing, defined the unique function of the nurse as assisting the individual, sick or well, in the performance of activities contributing to health or recovery (or a peaceful death) that the individual would perform unaided if they had the necessary strength, will, or knowledge. This is done to help the patient gain independence as rapidly as possible. She identified 14 basic needs: (1) Breathe normally, (2) Eat and drink adequately, (3) Eliminate body waste, (4) Move and maintain desirable posture, (5) Sleep and rest, (6) Select suitable clothing, (7) Maintain body temperature, (8) Keep the body clean and well-groomed while protecting the integument, (9) Avoid environmental dangers and injuring others, (10) Communicate emotions and opinions, (11) Spiritual needs, (12) Worship according to faith, (13) Work for a sense of accomplishment, (14) Play or participate in recreation, and (15) Learn or satisfy curiosity leading to normal development and health.

Henderson’s assumptions include the idea that the mind and body are inseparable and that the patient and family constitute a unit. Health is defined as a quality of life and is basic to human functioning, requiring independence and interdependence. Nurses function as members of a medical team but independently of the physician in attendance. The nurse may assume the role of a substitute (substitutive), a helper (supplementary), or a partner (complimentary) for the patient. The goal of nursing is to assist individuals toward health, independence, or a peaceful death.

Faye Glenn Abdellah: Twenty-One Nursing Problems

Faye Glenn Abdellah developed a typology of 21 nursing problems to provide service to individuals, families, and society by making nursing kind, caring, and technically prepared. She categorized needs into four areas: comfort, hygiene, and safety; physiological balance; psychological and social factors; and sociological and community factors. The 21 problems include: (1) hygiene and physical comfort, (2) optimal activity, rest, and sleep, (3) safety through prevention of accident and infection, (4) good body mechanics and deformity correction, (5) oxygen supply, (6) nutrition, (7) elimination, (8) fluid and electrolyte balance, (9) recognition of physiological responses to disease, (10) regulatory mechanisms, (11) sensory function, (12) positive and negative expressions and feelings, (13) interrelatedness of emotions and organic illness, (14) verbal and nonverbal communication, (15) productive interpersonal relationships, (16) spiritual goals, (17) therapeutic environment, (18) self-awareness of varying needs, (19) optimum goals in light of limitations, (20) community resource usage, and (21) understanding social problems as causes of illness.

Jean Watson: Theory of Transpersonal Caring

Jean Watson’s theory emphasizes that caring is central to nursing and more "healthogenic" than curing. She proposed Ten Carative Factors: (1) formation of a humanistic-altruistic system of values, (2) instillation of faith-hope, (3) cultivation of sensitivity to self and others, (4) development of a helping-trust relationship, (5) promotion of positive and negative feelings, (6) systematic use of scientific problem-solving, (7) transpersonal teaching-learning, (8) provision for supportive mental, physical, sociocultural, and spiritual environments, (9) assistance with basic human needs, and (10) allowance for existential-phenomenological forces. Her metaparadigm views the Person as possessing a mind, body, and soul; Health as unity and harmony within these three spheres; and Nursing as assisting persons to achieve a higher degree of harmony through caring relationships.

Dorothea Orem: Self-Care Deficit Theory

Dorothea Orem’s theory is comprised of three interrelated parts: the Theory of Self-Care, the Theory of Self-Care Deficit, and the Theory of Nursing Systems. Self-care is the practice of activities individuals initiate on their own behalf to maintain life and well-being. Self-care agency is the human ability to engage in self-care, which is influenced by basic conditioning factors such as age, gender, developmental state, health state, sociocultural factors, and resource availability. Therapeutic self-care demand is the totality of care measures necessary at specific times to meet requisites.

Self-care requisites are divided into three categories: Universal (Activities of Daily Living like air, food, water, elimination, activity/rest, solitude/interaction, hazard prevention, and promotion of functioning), Developmental (growth processes like adjusting to a new job), and Health Deviation (resulting from illness or treatment). A self-care deficit occurs when self-care agency is not adequate to meet demands, which is when nursing is needed. Nursing Agency is the power of nurses to help others meet their demands. Orem identifies three nursing systems: Wholly Compensatory (nurse does everything), Partly Compensatory (both nurse and patient engage), and Supportive-Educative (patient does all self-care but requires assistance in decision-making or knowledge).

Martha Rogers: Theory of Unitary Human Beings

Martha Rogers’ conceptual model is built on four blocks: Energy Field (the fundamental unit of living and non-living), Universe of Open Systems (infinite and integral fields), Pattern (continuous change giving identity to the field), and Pandimensionality (a nonlinear domain without spatial or temporal attributes). She proposed the Principles of Homeodynamics: Resonancy (patterning changes from lower to higher frequency), Helicy (spiral, continuous, non-repeating development), and Integrality (the continuous mutual process of person and environment, including reciprocal and synchronous principles). In her metaparadigm, the Person is an irreducible, pandimensional energy field, and Health is a term used to symbolize wellness and the absence of disease.

Dorothy Johnson: Behavioral System Model

Dorothy Johnson views the Person as a behavioral system with patterned, repetitive, and purposeful ways of behaving. Key concepts include System (a whole functioning through interdependence), Equilibrium (a transitory resting state), Tension (strain from disturbed equilibrium), and Stressor (stimuli producing tension). The model features seven subsystems: Attachment/affiliative (survival and security), Dependency (nurturing response), Ingestive (conditions of eating), Eliminative (conditions of elimination), Sexual (procreation and gratification), Achievement (mastery of self/environment), and Aggressive/protective (protection and preservation). Each subsystem has four structural elements: Drive (goal sought), Set (predisposition to act), Choice (alternatives), and Behavior (observable outcome).

Sister Callista Roy: Adaptation Model

Based on systems and adaptation theories, Sister Callista Roy defines the Person as an adaptive system. Adaptation Level is a constantly changing point made up of the pooled effect of three classes of stimuli: Focal (confronting the individual), Contextual (contributing factors), and Residual (unclear environmental factors). Coping processes include the Regulator Subsystem (neural, chemical, endocrine) and the Cognator Subsystem (perceptual, information processing, learning, judgment, emotion). Mechanisms can be Innate (genetically determined) or Acquired (learned). There are four Adaptive Modes: Physiological-Physical, Self-Concept-Group Identity, Role Function, and Interdependence. Nursing involves promoting adaptation and health by interpreting stimuli through perception.

Betty Neuman: Systems Model

Betty Neuman’s model focuses on system stability. The client system is protected by three lines: the Flexible Line of Defense (outer dynamic ring), the Normal Line of Defense (stability state), and Lines of Resistance (broken rings protecting the basic core/immune system). Stressors are tension-producing stimuli classified as Intrapersonal (within individual), Interpersonal (between individuals), or Extrapersonal (outside individual). Wellness exists when system parts interact in harmony; illness occurs when needs are not satisfied, leading to energy depletion.

Interventions occur through three levels of prevention: Primary (Health Promotion), Secondary (early detection/treatment), and Tertiary (rehabilitation). Systems move through processes of Entropy (energy depletion toward death) and Negentropy (energy conservation toward stability). Reconstitution is the return to stability following treatment, which may be at a higher or lower level of wellness than before the stressor invasion. Nursing is concerned with the whole person and their interaction with internal and external environmental factors.