Non-experimental Designs
Give this one a try later!
•< control
•No cause and effect is established
•Wealth of data for formulating level I and level II studies
Data Collection
Give this one a try later!
•Precise, systematic gathering of information for the study
•Described under the"procedures" section of a research article
,Dependability
Give this one a try later!
•Stability (reliability) of data over time and conditions
•Equivalent to reliability
•Can you follow the follow the trail of the researcher
•Would another researcher reach the same conclusions under the same
circumstances?
•Dependability required for credibility
Why Is the Design Important?
Give this one a try later!
•Research Design coupled with methods of the study and data analysis are
the way researchers find the answers to research questions (or hypotheses)
•Lack of skilled study design leads to "flawed research"...or the research
question may not be answered!
Independent/Dependent Variable Example
Give this one a try later!
Caffeine (IV) leads to increased anxiety (DV) in college students.
IV influences change in the DV
,Non-experimental: Prospective studies
Give this one a try later!
outcome has not occurred-investigator follows up subjects over period of
time to determine occurrence of outcomes
What does a research design direct?
Give this one a try later!
-Population selection
-Sampling
-Methods of measure
-Plans for data collection
-Analysis
What is a Research Design?
Give this one a try later!
-Blueprint for conducting the study
-Maximizes control
Random Sampling does what?
Give this one a try later!
, Increases representativeness
•Control group looks the same as the Experimental Group
Steps in Critiquing a Quantitative Study
Give this one a try later!
1. Identify study purpose
2. Identify methods and research design
3.Identify data analysis techniques (power; confidence intervals; effect size)
4. Identify threats to reliability; validity; generalizability
Evidence Hierarchies
Give this one a try later!
•Many different hierarchies
•These hierarchies rank evidence sources according to the strength of
evidence they provide
What Components Do "Good" Research Studies Possess?
Give this one a try later!
•Purpose
•Hypothesis or Research Question: Variables
•Literature Review
•Population with a representative sample
•Methods
•Results with Data Analysis
Give this one a try later!
•< control
•No cause and effect is established
•Wealth of data for formulating level I and level II studies
Data Collection
Give this one a try later!
•Precise, systematic gathering of information for the study
•Described under the"procedures" section of a research article
,Dependability
Give this one a try later!
•Stability (reliability) of data over time and conditions
•Equivalent to reliability
•Can you follow the follow the trail of the researcher
•Would another researcher reach the same conclusions under the same
circumstances?
•Dependability required for credibility
Why Is the Design Important?
Give this one a try later!
•Research Design coupled with methods of the study and data analysis are
the way researchers find the answers to research questions (or hypotheses)
•Lack of skilled study design leads to "flawed research"...or the research
question may not be answered!
Independent/Dependent Variable Example
Give this one a try later!
Caffeine (IV) leads to increased anxiety (DV) in college students.
IV influences change in the DV
,Non-experimental: Prospective studies
Give this one a try later!
outcome has not occurred-investigator follows up subjects over period of
time to determine occurrence of outcomes
What does a research design direct?
Give this one a try later!
-Population selection
-Sampling
-Methods of measure
-Plans for data collection
-Analysis
What is a Research Design?
Give this one a try later!
-Blueprint for conducting the study
-Maximizes control
Random Sampling does what?
Give this one a try later!
, Increases representativeness
•Control group looks the same as the Experimental Group
Steps in Critiquing a Quantitative Study
Give this one a try later!
1. Identify study purpose
2. Identify methods and research design
3.Identify data analysis techniques (power; confidence intervals; effect size)
4. Identify threats to reliability; validity; generalizability
Evidence Hierarchies
Give this one a try later!
•Many different hierarchies
•These hierarchies rank evidence sources according to the strength of
evidence they provide
What Components Do "Good" Research Studies Possess?
Give this one a try later!
•Purpose
•Hypothesis or Research Question: Variables
•Literature Review
•Population with a representative sample
•Methods
•Results with Data Analysis
