Polit & Beck What's a Theory or Model?

11 terms by Valerie_Salgado

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Key Concepts

• Nursing
• Person
• Environment
• Health

• Concepts / Constructs

(e.g., Nursing, Person,
Environment, Health, self-care deficit)

Propositions

(e.g., statements about the relationships)

Theories & Models

systematic explanation of
large chunks of reality.
Concepts + Propositions

What is difference between theory & model?

- Theory explains more
- Model may be pictures or words

Components of Theories/Models

• Concepts
- Conceptual definitions
- Operational definitions
• Propositions are
- Statements about how concepts are
related

Concepts/Constructs
(represented in single words)

"An abstraction based
on [shared] behaviors
or characteristics"
Must be translated into
measurable variables

Propositions

Statement of the Relationship Between Concepts
9/17/2011 mefh
Concepts (words) Propositions (sentences)
Child's play is a
simple, easy activity

Models

Propositions + Propositions

Framework: Theory or Model

A theoretical or conceptual framework for a
research study states the main concepts
investigated in the research project & describes the
expected relationships between the concepts.
• EVERY study has a framework!
• In your own research abstract/article - what are
the main ideas?
• How are those main ideas related?

Nursing or Borrowed or Shared?

• Stetler?
• Orem?
• Maslow?
• Travelbee?
• Lazarus & Folkman?
• Health Promotion model (p. 197)

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