NURS-3040 Experimental and quasi
expire mental designs
What is the purpose of research designs - answerProvides plan to aid in solving
problems, answering questions, testing hypotheses
Experimental and quasi experimental designs differ from nonexperimental ones since
the researcher actively seeks to bring about the desired effect and does not passively
observe behaviours and actions
How do we chose a research design - answerUse a design that:
Is appropriate to the research question
Maximizes control
Holds the conditions of the study constant
Establishes specific sampling criteria
Maximizes the level of evidence
How do we maximize control - answerRule out extraneous variables...
- Homogenous sampling
- Constancy in data collection
- Manipulation of the independent (causal) variable
- Randomization
What level of evidence to experimental designs provide - answerLevel II evidence
Evaluate outcomes in terms of:
- Efficacy
- Cost effectiveness
What are the experimental design types of level II evidence - answerTrue experimental
design
Solomon four-group design
After only design
What are the experimental design features - answerRandomization: of participant to
control or treatment group
Control: independent variable -> dependent variable
Manipulation: of independent variable
What are the advantages of expiremental design - answerMost appropriate for testing
cause-and-effect relationships
Provides highest level of evidence for single studies
expire mental designs
What is the purpose of research designs - answerProvides plan to aid in solving
problems, answering questions, testing hypotheses
Experimental and quasi experimental designs differ from nonexperimental ones since
the researcher actively seeks to bring about the desired effect and does not passively
observe behaviours and actions
How do we chose a research design - answerUse a design that:
Is appropriate to the research question
Maximizes control
Holds the conditions of the study constant
Establishes specific sampling criteria
Maximizes the level of evidence
How do we maximize control - answerRule out extraneous variables...
- Homogenous sampling
- Constancy in data collection
- Manipulation of the independent (causal) variable
- Randomization
What level of evidence to experimental designs provide - answerLevel II evidence
Evaluate outcomes in terms of:
- Efficacy
- Cost effectiveness
What are the experimental design types of level II evidence - answerTrue experimental
design
Solomon four-group design
After only design
What are the experimental design features - answerRandomization: of participant to
control or treatment group
Control: independent variable -> dependent variable
Manipulation: of independent variable
What are the advantages of expiremental design - answerMost appropriate for testing
cause-and-effect relationships
Provides highest level of evidence for single studies
