Chapter 2; taylor

Theory, Research, and Evidence-Based Practice

Big Picture

This chapter explains where nursing knowledge comes from and how nurses decide whether a practice is worth using.

It covers:

• sources of nursing knowledge

• major theories that influence nursing thinking

• basic nursing theory concepts

• research methods

• protection of human subjects

• evidence-based practice

• how to ask and answer clinical questions using evidence

Major connection to other chapters

This chapter directly supports:

• Chapter 1: nursing is a profession because it has a unique body of knowledge, research, standards, and evidence-based practice

• Chapter 5: culturally respectful care must also be evidence-based, not just tradition-based

• Chapter 6: using weak, unsafe, or unexamined practices can become an ethical issue; EBP supports advocacy, safety, and quality care

• future chapters on:

  • nursing process

  • assessment

  • interventions

  • patient teaching

  • safety

  • quality improvement

  • clinical judgment

This chapter is basically asking:
What counts as good nursing knowledge, and how do nurses use it responsibly?

Learning Outcomes — What You Need to Know

You should be able to:

• explain sources of nursing knowledge and historical influences on it

• compare systems, adaptation, and developmental theory

• explain the four concepts common to all nursing theories

• discuss evolution of nursing research

• compare quantitative and qualitative research

• describe evidence-based practice and why it matters

• outline the steps of EBP

• read a research article on a beginning level

• evaluate whether a study matters for practice

Nursing Concepts

• Evidence-based practice

• Quality improvement

Key Terms

Know these:

• knowledge: awareness of reality gained through learning or investigation

• theory: group of related concepts that describe a pattern of reality

• nursing theory: theory developed to describe, explain, predict, and guide nursing care

• concepts: abstract ideas or impressions organized into symbols of reality

• conceptual framework/model: organized set of concepts that provides a pattern or structure

• research: scientific inquiry using systematic collection of data to describe, explain, or predict

• nursing research: research related to nursing practice, education, policy, history, ethics, and patient care

• quantitative research: research using numbers, measurement, variables, and statistics

• qualitative research: research focused on meanings, perceptions, and lived experience

• basic research: research designed to generate/refine theory; not always directly useful in practice

• applied research: research designed to directly improve clinical practice

• data: information collected in a study

• inductive reasoning: moving from specific observations to broader conclusions

• deductive reasoning: moving from a general idea to specific conclusions/actions

• research utilization (RU): transforming research knowledge into practice

• evidence-based practice (EBP): problem-solving approach to clinical decisions using best evidence, clinical expertise, and patient preferences/values

• evidence-based practice guidelines: recommendations developed from synthesis of multiple studies

• systematic reviews: structured reviews summarizing evidence from multiple studies

• quality improvement (QI): ongoing efforts to improve systems, outcomes, safety, and care processes

• scholarly inquiry: disciplined pursuit of knowledge to expand nursing science and practice

• informed consent: voluntary, knowledgeable agreement to participate in research

Nursing Knowledge

Definition

Knowledge is awareness of reality gained through:

• learning

• investigation

• study

• experience

Nursing knowledge base includes

• nursing science

• nursing philosophy

• ethics

• biology

• psychology

• social sciences

• physical sciences

• economic sciences

• organizational sciences

• technologic sciences

Nursing addresses issues such as:

• health and wellness promotion

• safety and quality

• care and self-care

• comfort and pain

• adaptation to physiologic/pathophysiologic processes

• emotions around birth, illness, development, death

• meanings people assign to health/illness

• linguistic and cultural sensitivity

• health literacy

• decision making

• relationships and role change

• social policy effects on health

• health care access, cost, and quality

• environmental influences on disease/injury

Why this matters

This list proves nursing is broad and complex.
Nursing is not just bedside tasks. It involves:

• science

• communication

• behavior

• systems

• policy

• culture

• ethics

• education

• adaptation

Connection to Chapter 1

This supports the idea that nursing has a unique body of knowledge, which is one reason nursing is a profession.

Connection to Chapter 5

Knowledge of:

• language

• culture

• health literacy

• meaning of illness

is essential for culturally respectful care.

Connection to Chapter 6

Knowledge of:

• ethics

• policy

• decision-making

• quality and safety

supports ethical nursing action.

Sources of Knowledge

The chapter says nursing knowledge comes from three main sources:

1. Traditional Knowledge

Knowledge passed down from generation to generation.

Example

“We’ve always done it this way.”

Example from text

Changing a hospital patient’s bed linens daily whether they are soiled or not.

Strength

• practical

• easy to continue

• familiar

Limitation

• may not be based on research

• may continue even if not truly useful

2. Authoritative Knowledge

Knowledge accepted as true because it comes from an expert.

Example

Experienced senior nurse teaches a more efficient method of IV insertion.

Strength

• useful

• practical

• often based on experience

Limitation

• may go unchallenged just because the person seems expert

• expertise alone does not equal best evidence

3. Scientific Knowledge

Knowledge gained through the scientific method and systematic research.

Features

• objective

• tested

• measured

• more reliable for wide application

Why this matters

Modern nursing increasingly relies on scientific knowledge through EBP.

Significance of Knowledge Sources

All three knowledge sources contribute to nursing, but:

• traditional and authoritative knowledge are often subjective

• scientific knowledge is increasingly preferred because it can be systematically tested and applied more broadly

Major nursing mindset

Do not reject tradition automatically.
But do not protect tradition just because it is familiar.

You should ask:

• what evidence supports this practice?

• is there harm?

• is there a better alternative?

Connection to Chapter 1

This is part of professional formation: nurses must learn to think critically, not just imitate.

Connection to Chapter 6

Blindly following unsafe tradition can become an ethical issue because patient safety is at stake.

Historical Influences on Nursing Knowledge

Florence Nightingale

She influenced nursing knowledge by:

• demonstrating efficient nursing care

• defining nursing as separate from medicine

• distinguishing health nursing from illness nursing

Big idea

Nightingale helped nursing move toward its own identity and knowledge base.

Social and Educational Influences

Early U.S. nursing schools:

• copied Nightingale’s model

• had little planned curriculum

• used physicians’ lectures and hospital service learning

• emphasized service over education

As a result:

• nursing knowledge was fragmented

• practice was controlled by hospitals and physicians

• nursing followed tradition and common wisdom more than formal science

Later changes

With:

• women’s increased independence

• stronger education

• more nursing research

• growth of graduate programs

nursing increasingly became recognized as a science.

21st-century influence

The Future of Nursing reports emphasized:

• stronger education

• practicing to full scope

• leadership

• research priorities

• health equity and population health

Connection to Chapter 1

This continues the professionalization story:
nursing moved from service/apprenticeship into a scholarly profession.

Theory

What is a theory?

A theory is a group of related concepts that describe a pattern of reality.

What are concepts?

Concepts are abstract ideas that represent:

• objects

• properties

• events

• relationships

Conceptual framework or model

A conceptual framework/model is an organized pattern of concepts.

House analogy from the text

• concepts = bricks and boards

• conceptual framework = blueprint

Theories can be:

• tested

• changed

• used to guide research

• used to evaluate practice

Deductive vs Inductive Reasoning

Deductive reasoning

Start with a general idea and move to specific ideas/actions.

Inductive reasoning

Start with specific observations and build toward a general conclusion.

Memorize this distinction.

It is simple but testable.

Nursing Theory

Definition

Nursing theory is developed to describe nursing.

It helps nursing:

• describe what nursing is

• explain why nursing acts in certain ways

• predict outcomes

• control or influence outcomes of care

Why nursing theory matters

It:

• differentiates nursing from other disciplines

• provides rationale for interventions

• supports problem solving

• guides research

• organizes care

• helps question assumptions

• expands nursing knowledge

Practical meaning

Theory is not random academic fluff.
It helps nurses organize thinking and make purposeful decisions.

Connection to Chapter 1

Chapter 1 said nursing has its own body of knowledge.
Theory is one of the core pieces of that body of knowledge.

Interdisciplinary Base for Nursing Theories

Many nursing theories are influenced by broader theories from other disciplines.

The text focuses on:

• systems theory

• adaptation theory

• developmental theory

General Systems Theory

Main idea

A system is a set of interacting elements contributing to an overall goal.

Key points in Box 2-1

• the whole is greater than the sum of its parts

• systems are hierarchical

• systems have interrelated subsystems

• change in one element can affect the whole

• boundaries separate systems from each other and from environment

• systems interact with environment through input and output

• open systems allow movement of energy, matter, information

• no truly closed systems exist in reality

• open systems maintain balance through feedback

Nursing meaning

Patients are not isolated body parts.
A person is a system interacting with:

• family

• environment

• illness

• stress

• treatment

• culture

• health care system

Connection to Chapter 5

This fits culturally respectful care because patients are influenced by:

• family

• community

• environment

• culture

• language

• relationships

Connection to later patho/fundamentals thinking

If one system changes, others are affected.
That is major nursing reasoning.

Adaptation Theory

Definition

Adaptation = adjustment of living matter to other living things and environmental conditions.

Important features

• continuously occurring

• involves interaction and response

• occurs on three levels:

  • internal (self)

  • social (others)

  • physical (biochemical reactions)

Nursing meaning

Patients are constantly adapting to:

• illness

• hospitalization

• procedures

• family changes

• disability

• pain

• stress

Connection to Chapter 1

This connects to the aim of nursing to help patients:

• restore health

• cope with disability/death

Connection to Chapter 6

Ethical care often includes supporting adaptation when cure is not possible.

Developmental Theory

Definition

Growth and development proceed in an orderly, predictable pattern from conception to death, but each person progresses uniquely.

Influencing factors

• heredity

• temperament

• emotional environment

• physical environment

• life experiences

• health status

Major theorists mentioned

Erik Erikson

• psychosocial development

• emphasizes socialization

• includes 8 stages of life

• each stage has a task/conflict

Abraham Maslow

• hierarchy of needs

• based on physical and psychosocial needs

• needs exist in levels, with multiple needs potentially present at once

Nursing meaning

Developmental theory helps nurses understand:

• age-related needs

• psychosocial responses

• what is normal vs concerning

• priorities in care and teaching

Example tied in text

A newborn cap supports heat conservation, which connects to Maslow’s physiologic needs.

Connection to Chapter 1

This supports:

• health promotion

• prevention

• care across life span

Connection to Chapter 5

Developmental stage may influence how culture is expressed or how families make decisions.

Nursing Theories

Why nursing theories matter in practice

Nursing theories:

• give rationales for interventions

• provide a knowledge base for action

• improve problem-solving skills

• help organize care

• help nurses question assumptions

• guide nursing process

• identify nursing goals

Characteristics of useful nursing theories

They should be:

• simple

• general

• broadly applicable

• able to generate research

• able to guide practice

Types of nursing theories

Descriptive theories

Describe:

• phenomena

• events

• relationships

• situations

Prescriptive theories

Address:

• interventions

• consequences of interventions

• how to control, promote, or change practice

Four Common Concepts in All Nursing Theories

This is one of the biggest exam points.

All nursing theories include four concepts:

1. Person

The person receiving care.
This is the most important concept and the focus of nursing.

2. Environment

Everything internal and external affecting the person.

3. Health

The person’s state of health/well-being.

4. Nursing

What nurses do in relation to person, environment, and health.

Memorize this.

This is classic nursing theory content.

Connection to Chapter 1

This matches Chapter 1’s person-centered view of nursing.

Connection to Chapter 5

Environment and person must include:

• culture

• family

• language

• social context

Connection to Chapter 6

Nursing involves ethical action and advocacy in response to the person’s needs.

Selected Nursing Theorists and Main Themes

You likely do not need every single theorist memorized at once, but know the major ideas.

Florence Nightingale

• environment affects healing

• focus on cleanliness, ventilation, light, diet, noise

Hildegard Peplau

• nursing is therapeutic, interpersonal, goal-oriented

• strong communication/relationship focus

Virginia Henderson

• patient needs help to reach independence

• highlights nursing autonomy

Faye Abdellah

• nursing is problem-solving

• 21 nursing care problems

Ida Jean Orlando

• nurse responds to verbal/nonverbal patient needs

• nursing process and alleviating distress

Ernestine Wiedenbach

• nursing as an art

• nurturing care for perceived needs

Lydia Hall

• rehabilitation focus

• care, cure, core components

Myra Levine

• conservation principles

• patient adapts to environment

Martha Rogers

• unitary human being

• science and art of nursing

Dorothea Orem

• self-care deficit theory

• nursing is needed when self-care cannot be met

Imogene King

• nurse and patient set goals together

• interaction and communication

Betty Neuman

• humans in constant relationship with stressors

• nursing keeps system stable

Sister Callista Roy

• humans are biopsychosocial beings adapting through modes

• nursing addresses ineffective adaptive responses

Madeleine Leininger

• caring is central

• basis for transcultural nursing

Jean Watson

• caring, humanism, quality of life, holistic care

Margaret Newman

• total-person approach, wellness

Dorothy Johnson

• behavioral systems model

Rosemarie Parse

• health as ongoing open process

• care planned from patient’s perspective

Nola Pender

• health promotion model

• how beliefs affect health behaviors

Benner and Wrubel

• caring and skill development

• novice to expert stages

Katherine Kolcaba

• comfort theory: relief, ease, transcendence

High-yield shortcut

If you cannot memorize all, prioritize:

• Nightingale = environment

• Peplau = interpersonal relationship

• Orem = self-care

• Roy = adaptation

• Leininger = culture/caring

• Watson = caring/holistic care

• Pender = health promotion

• Benner = novice to expert

Connection to Chapter 5

Leininger is foundational for culturally respectful care.

Connection to Chapter 1

Pender links to health promotion aims.

Connection to Chapter 6

Peplau, Watson, and Orem support advocacy, relationship-centered and autonomy-supporting care.

Theory in Clinical Practice

Theory gives nurses:

• autonomy

• authority

• rationales for care

• a way to organize patient data

• a way to describe and document nursing actions

Practical point

Theoretical concepts guide every phase of the nursing process:

• what data to collect

• what matters most

• what diagnosis/problem is relevant

• what interventions to choose

• what outcomes to evaluate

Translation

Theory helps structure your thinking so care is not random.

Nursing Research

Definition

Research is scientific inquiry using systematic data collection to:

• describe

• explain

• predict

events and outcomes.

Goals of research

• validate/refine current knowledge

• develop new knowledge

• solve problems

• generate explanations and theories

Nursing research

Nursing research includes research to improve:

• clinical care

• nursing education

• policy

• ethics

• history

• systems of care

Why nursing research matters

It strengthens nursing as a profession by expanding its unique body of knowledge.

Connection to Chapter 1

A profession needs ongoing research. This is one of the criteria that makes nursing a profession.

Connection to Chapter 6

Using research helps nurses advocate for safer, more just, more effective care.

Evolution of Nursing Research

Florence Nightingale

Kept objective records and used data to determine which interventions worked.

1950s–1960s

• first issue of Nursing Research in 1952

• focus on standards, education, quality of care

1970s–1980s

• more clinical research

• studies of interventions, outcomes, nursing process, education

• more models and theories developed

• more master’s and doctoral preparation

• more research funding

1985 / 1993

• National Center for Nursing Research created

• later became National Institute of Nursing Research (NINR)

NINR goals

• build scientific foundation for practice

• prevent disease/disability

• manage/eliminate symptoms

• enhance end-of-life and palliative care

Important point

Nursing research matured from “common sense practice” toward a science-based profession.

Quantitative Research

Definition

Research using numbers, variables, measurement, and statistical analysis.

Basic vs Applied Research

Basic research

• develops/refines theory

• not always directly useful in practice

Applied research

• designed to directly improve practice

Important quantitative terms

Know these:

Variable

Something that varies and can be measured.

Dependent variable

The outcome being studied.

Independent variable

The factor believed to influence the dependent variable.

Hypothesis

Statement of expected relationship between variables.

Data

Information collected, usually numerical.

Instruments

Tools used to collect data.
They should be:

• reliable = consistent results

• valid = measures what it should measure

Types of Quantitative Research

Descriptive Research

Explores and describes real-life situations and relationships.

Correlational Research

Examines degree/type of relationship between variables.
Correlation ranges:

• –1 = perfect negative

• +1 = perfect positive

Quasi-experimental Research

Examines cause-and-effect in clinical settings, often without full control.

Experimental Research

Examines cause-and-effect under highly controlled conditions.

High-yield difference

• correlational = relationship, not cause

• experimental/quasi-experimental = looks at effect of intervention

Steps of the Quantitative Research Process

Know the sequence.

1. State research problem

2. Define purpose

3. Review related literature

4. Formulate hypotheses and variables

5. Select research design

6. Select population and sample

7. Collect data

8. Analyze data

9. Communicate findings and conclusions

Connection to nursing process

The chapter points out the similarity to the nursing process.
That is not accidental.

Nursing process:

• assess

• diagnose

• plan

• implement

• evaluate

Research process:

• define problem

• gather information

• plan method

• collect/analyze data

• evaluate/communicate findings

Qualitative Research

Definition

Research done to gain insight by discovering meanings.

Main idea

Reality is based on perceptions and may differ person to person.

Main feature

Analyzes:

• words

• narratives

• experiences

rather than numbers.

Methods of qualitative research

Phenomenology

Describes lived experiences and what they mean to the person.

Grounded Theory

Explores how people describe reality and builds theory from the data.

Ethnography

Studies culture and cultural issues.

Historical Research

Studies past events to understand nursing/profession today.

High-yield distinction

• quantitative = numbers, measurement, statistics

• qualitative = words, meaning, lived experience

Connection to Chapter 5

Ethnography and qualitative methods are especially relevant to:

• culture

• beliefs

• meanings of illness

• patient perspectives

Protection of Human Subjects

This section is extremely important.

When patients participate in research, nurses help ensure their interests are protected.

Patient rights in research

• informed consent

• right to withdraw at any time

• right to refuse without harming care

• confidentiality

• protection from harm

Seven ethical requirements for clinical research

1. Value – study must add knowledge or health benefit

2. Scientific validity – methodologically sound

3. Fair subject selection – not chosen because vulnerable/privileged unfairly

4. Favorable risk-benefit ratio – benefits outweigh risks

5. Independent review – outside review by unaffiliated persons

6. Informed consent – voluntary knowledgeable agreement

7. Respect for subjects – privacy, withdrawal rights, monitoring well-being

IRBs

Institutional Review Boards review studies to:

• determine risk

• ensure ethics are followed

Connection to Chapter 6

This is directly tied to ethics:

• autonomy

• nonmaleficence

• justice

• protection of rights

Research Utilization (RU)

RU is the process of turning research knowledge into practice.

Why RU matters

Research is useless if bedside nurses never use it.

Common barriers

• limited time

• lack of access to resources

• lack of research preparation

• too much reliance on personal experience and trial-and-error

Important nursing truth

Too many nurses still think research is far from bedside care.
That is wrong.

The chapter says much of bedside nursing already parallels research thinking.

Evidence-Based Practice (EBP)

Definition

EBP is a problem-solving approach to clinical decision making using:

• the best available evidence

• clinical expertise

• patient preferences and values

This is one of the most important definitions in the chapter.

Do not reduce EBP to “whatever a study says.”

It requires all three:

1. best evidence

2. nurse’s clinical expertise

3. patient/family values and preferences

Connection to Chapter 5

Patient preferences and culture matter in EBP.
A supported intervention still must be acceptable to the patient.

Connection to Chapter 6

Using best evidence is also an ethical issue because nurses must protect patients from ineffective or harmful care.

Essential Elements of EBP

According to the text:

1. integrate best research and other evidence

2. value clinical expertise

3. consider patient preferences, values, and engagement

Art + science of nursing

EBP merges:

• science = evidence

• art = individualized use with patient and judgment

Rationale for Using EBP

Why do nurses use EBP?

• improves quality of care

• improves patient outcomes

• supports safety

• reduces ineffective or outdated practices

• supports cost-effective care

• helps answer clinical questions with current best evidence

Chapter 1 connection

Professional nursing requires evidence-based, not intuition-only, care.

Example mindset

Instead of asking:

• “What have we always done?”

Ask:

• “What does the best current evidence support for this patient, here, now?”

Barriers to EBP

The chapter lists common barriers:

• nursing shortage

• high patient acuity

• limited time

• difficulty reading/evaluating research

• organizational resistance

• lack of authority to change practice

• lack of support from physicians/managers/staff

• inadequate infrastructure/resources

Key point

These barriers are real, but they are not excuses to ignore evidence forever.

Hierarchy of Evidence

The strongest evidence is usually at the top.

Strongest forms

• systematic reviews

• EBP guidelines

• meta-analyses

Definitions

Systematic reviews

Summarize findings from multiple studies on one focused question.

EBP guidelines

Recommendations developed from multiple studies by expert panels.

Meta-analysis

Statistical combination of results across multiple studies.

If highest-level evidence is unavailable

Use:

• reviews

• original studies

• descriptive or qualitative research as appropriate

Memorize the general rule

Systematic reviews and guidelines are stronger than single studies.

Johns Hopkins Nursing EBP Model

This is a specific model for practice.

Three-step PET process

• P = Practice question

• E = Evidence

• T = Translation

Goal

Quickly and appropriately incorporate best research into care.

Six Steps of the EBP Process

These are critical. Memorize them.

Step 1: Formulate the burning clinical question

Usually with PICOT

Step 2: Search for the best evidence

Seek strongest available evidence.

Step 3: Critically appraise the evidence

Ask:

• is it valid?

• what are the results?

• is it applicable?

Step 4: Integrate evidence with clinical expertise and patient/family preferences

This is where art + science merge.

Step 5: Evaluate outcomes of the practice change

Determine whether change worked.

Step 6: Disseminate outcomes

Share what was learned.

This sequence is major exam material.

PICOT Format

PICOT helps structure clinical questions.

P = Patient, population, or problem

Who or what is the focus?

I = Intervention

What intervention/exposure/test is being considered?

C = Comparison

What is it being compared to?

O = Outcome

What result matters?

T = Time

When will outcome be measured/evaluated?

Example structure

In ___ patients, how does ___ compared with ___ affect ___ over ___?

PICOT in Practice — Pressure Injury Example

You do not need the exact mattress details memorized, but you do need the logic.

Clinical question

In adults with tetraplegia at risk for pressure injuries in long-term care, is a low air loss alternating pressure mattress better than an alternating pressure mattress overlay in preventing pressure injuries?

Findings

High-quality reviews did not show clear superiority of one support surface.

Important conclusion

Support surfaces are not stand-alone interventions.

Pressure injury prevention also requires:

• routine skin assessment

• risk assessment

• weight and mobility assessment

• nutritional assessment

• moisture management

• pressure redistribution

• repositioning

• education

Nursing lesson

Do not chase one fancy product and ignore the full prevention bundle.

Connection to Chapter 1

This fits nursing’s aims:

• prevent illness

• restore health

• use evidence

• provide comprehensive care

Critical Appraisal of Evidence

When appraising evidence, ask:

1. Are the results valid?

2. What are the results?

3. Will these results help me care for my patients?

Translation

Not all published evidence is worth using.

You must decide:

• is it good science?

• what did it actually find?

• does it fit my setting/patient population?

Integrating Evidence with Expertise and Patient Preferences

Even strong evidence should not be applied blindly.

Questions to consider:

• does this fit this patient?

• does the patient want it?

• is it practical?

• is it too risky?

• is it too costly?

• is there a better reasonable alternative?

Key example from the text

The most reliable way to verify nasogastric tube placement is x-ray, but because of cost and radiation, it is not always the preferred method in every situation.

Big lesson

Best evidence does not always mean most aggressive or most technologically perfect option.
It means best overall decision in context.

Reading a Research Article

Know the basic parts of a research article.

Usual sections

Abstract

Summary of entire article.

Introduction / Literature Review / Purpose

Explains what is already known and why the study matters.

Method

Describes:

• subjects

• design

• data collection

• data analysis

Results

Reports findings, often in words + tables/graphs.

Discussion / Conclusions

Explains meaning of results and implications.

References

Sources used by researcher.

Why this matters

You need to know where to look for:

• purpose

• methods

• results

• whether it applies to practice

Checklist for Critiquing a Research Article

Important points from Box 2-4:

• title fits article

• abstract summarizes article

• introduction makes purpose clear

• problem is introduced

• research questions are clear

• theoretical framework informs research

• literature review is relevant and current

• methods match research questions

• analysis fits design

• results are clear

• discussion links results to framework and significance

• limitations are presented

• recommendations are included

• level/quality of evidence is judged

• applicability to practice is considered

Nursing point

Do not just read the conclusion and assume the study is good.

Quality Improvement (QI)

QI is not deeply expanded in this chapter, but it is linked to EBP.

Main idea

QI focuses on improving:

• systems

• processes

• outcomes

• safety

• reliability of care

Connection to EBP

EBP asks:

• what does best evidence say we should do?

QI asks:

• how do we make the system actually do it well and consistently?

Connection to Chapter 1

This supports nursing’s professional role in improving care quality.

Connection to Chapter 6

QI also has ethical significance because unsafe, ineffective systems harm patients.

High-Yield Compare and Contrast

Traditional vs Authoritative vs Scientific Knowledge

• Traditional = “we’ve always done it this way”

• Authoritative = expert says so

• Scientific = tested systematically by research

Inductive vs Deductive Reasoning

• Inductive = specific → general

• Deductive = general → specific

Basic vs Applied Research

• Basic = builds theory

• Applied = improves practice directly

Quantitative vs Qualitative Research

• Quantitative = numbers, variables, measurement, statistics

• Qualitative = words, meanings, perceptions, lived experiences

Descriptive vs Prescriptive Theory

• Descriptive = explains/describes phenomena

• Prescriptive = guides interventions and change

RU vs EBP

• Research utilization = applying research findings

• EBP = broader; includes research + expertise + patient preferences

Major Connections Across Chapters

Chapter 2 + Chapter 1

• Nursing is a profession because it has:

  • theory

  • research

  • EBP

  • standards

• nursing process and research process both require systematic thinking

Chapter 2 + Chapter 5

• EBP must still be culturally respectful

• patient values and beliefs influence whether evidence-based interventions are acceptable

• qualitative research and ethnography help nurses understand culture, meaning, and lived experience

Chapter 2 + Chapter 6

• using evidence is part of ethical practice

• ignoring evidence can harm patients

• protecting research subjects connects to autonomy, nonmaleficence, justice

• advocacy includes pushing for best evidence and questioning unsafe variation in practice

NCLEX / Exam High-Yield Points

• nursing knowledge comes from traditional, authoritative, and scientific sources

• scientific knowledge is gained through research and is foundational to EBP

• systems theory emphasizes interrelated parts and the whole being greater than the sum of its parts

• adaptation theory focuses on response/adjustment to environment

• developmental theory explains orderly but individualized growth/development

• four concepts common to all nursing theories:

  • person

  • environment

  • health

  • nursing

• the person is the most important concept and focus of nursing

• nursing theory helps describe, explain, predict, and guide care

• quantitative research uses numbers and statistics

• qualitative research explores meanings and lived experiences

• informed consent is essential in human research

• IRBs protect human subjects

• EBP combines:

  • best evidence

  • clinical expertise

  • patient preferences/values

• strongest evidence usually comes from:

  • systematic reviews

  • guidelines

  • meta-analyses

• PICOT helps form clinical questions

• EBP process has 6 steps:

  1. ask question

  2. search evidence

  3. appraise evidence

  4. integrate with expertise/patient values

  5. evaluate outcomes

  6. disseminate results

Fast Recall Table

What Your Instructor Could Ask

• Which source of knowledge is being used when a nurse says, “We’ve always done it this way”?

• What are the four concepts common to all nursing theories?

• What is the difference between qualitative and quantitative research?

• Which type of research is best for studying lived experience after a heart attack?

• Which step comes first in EBP?

• What does PICOT stand for?

• Why are IRBs important?

• Which evidence source is strongest for intervention questions?

• How does EBP differ from simply reading one research article?

• Why is the patient considered central in all nursing theories?

Bottom Line

This chapter is teaching you to stop being a nurse who just copies what they see and start being a nurse who asks:

• What do we know?

• How do we know it?

• Is it good evidence?

• Does it fit this patient?

• Is it safer or better than what we were doing before?

That is the mindset of a professional nurse.