Book chapters - Selecting a study design
8 important questions on Book chapters - Selecting a study design
How can study designs used in quantitative studies be classified?
- The amount of contact with the study population
- the reference period of study
- the nature of the investigation
How can designs be classified into three groups based on the number of contacts?
- Cross-sectional studies
- before-and-after studies
- longitudinal studies
What is a longitudinal study?
These intervals are not fixed so their length may vary from study to study. Irrespective of the size of the interval, the informaiton gathered each time is identical.
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How can study design be classified on the basis of the nature of the investigation?
- Experimental
- Non-experimental
- Quasi- or semi-experimental
What is an experimental study?
In experimental studies a researcher starts with the cause and waits to observe its effects.
Cause --> effect
What is a semi/quasi-experimental study?
What are controlled experiments?
The control group does not receive any stimulus or intervention whereas the experimental is exposed to it.
The intervention or stimulus is either introduced by the researcher or someone else.
What is th after-only design?
In this design, baseline information is usually constructed either on the basis of respondents recall of the situation before the intervention, or from information available in existing records.
The question on the page originate from the summary of the following study material:
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- Never study anything twice again
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