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Cha-Nam's Nursing 322
ISU May 23
11
Nursing
Undergraduate 3
05/22/2013

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Term
Typical Descriptive
Definition
Examines characteristics of a single sample
In a living sample
Term
Comparative descriptive
Definition
Examines differences in variables in two or more groups
In natural setting
Results: not generalizable to a population
Term
Time-dimensional
Definition
Longitudinal vs. cross-sectional
Prospective vs. retrospective
Term
Correlational studies
Definition
Determines the strength and type of relationships between two or more variables
No cause and effect
Types:
-Descriptive correlational design
-Predictive correlational design
-Model testing design
Term
Describe relationships between or among variables?
Definition
Descriptive correlational design
Term
Predict relationships between or among variables?
Definition
Predictive correlational design
Term
Test theoretically proposed relationships
Definition
Model testing design
Term
Experimental research
Definition
Causality
Highly controlled, objective, systematic studies
Involves the measurement of independent variable and dependent variables
Main characteristics:
-Controlled manipulation of independent variable
-Uses experimental and control groups
-Random assignment
Term
True experimental design (RCT)
Definition
Level 2 evidence
Randomization:
-Equal chance of being assigned the groups
-Increases the likelihood of differences in outcomes between groups are not related to chance alone
Control:
-Control/comparison group
-Control of experimental situations and settings
-Control of variance
Manipulation:
-Implementing an intervention
Term
Quasi-experimental designs
Definition
Test cause-and-effect relationships
Randomization?
No control group
Pretest and posttest
Nonequivalent dependent variables design
Level 3 evidence
Term
Describe the purpose of experimental and quasi-experimental research.
Definition
The researcher actively intervenes to bring about the desired effect and does not passively observe behaviors or actions.
They provide levels 2 and 3 evidence which is the highest levels for a single study.
Experimental design=testing cause and effect relationships
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