Unit 4: Ch. 18 Flashcards
what do retrospective, prospective, longitudinal, repeated measures, time series designs, and cross sectional studies all have in common?
They all have to do with TIME in some way, shape, or form
retrospective study
researchers look backward in time
prospective study
researchers start in present and look forward into the future (often used in public health nursing, epidemiology)
-ex: get a group of smokers in a study, follow them for x amount of years, check in with them periodically to see who got lung CA and who didn’t
some prospective studies may be categorized as longitudinal (if they collect data at various points)
longitudinal study
collect data at particular points (multiple points) in time
repeated measures study
collect exactly the same data using the same instruments/measurements at different points in time
time series study
looking at things over time
cross sectional study
one slice in time; not comparing findings to anything else
what is the purpose of participative studies and action research?
to create some kind of CHANGE
mixed method (MM) research
research that integrates qualitative and quantitative methods in a single study or coordinated set of studies
some questions/hypotheses require MM
what are the advantages of MM? (4)
- complementary: use of 2 methods (qualitative and quantitative) avoids problems encountered when using 1 method; “double checking”
- practicality: some phenomena are very complex and need more than 1 approach to the problem
- incrementality: depending on how much is known about the topic the researcher can begin with a qualitative approach and move into quantitative research
- enhanced validity: when you’ve got a set of findings and both qualitative and quantitative findings indicate the same thing –> increases validity (b/c finding the same thing)
- gives you more confidence in the validity of your results
uses of MM research (4)
- developmental work
- such as when an area of research is new. MM can help to capture the complexity of the topic (ex: may be developing instruments to measure the topic) - hypothesis generation and testing
- do the qualitative research, learn something about it –> may develop hypothesis for quantitative piece - explication
- to explain aspects of quantitative studies - theory building, testing, and refinement
MM designs
Concurrent: qualitative and quantitative data are collected at the same time
Sequential: qualitative and quantitative data are collected at different times, one after the other
Morse notations system:
- QUAL/quan, QUAN/qual, or QUAL/QUAN
- —capital letters indicate the more dominant method/higher priority (equally dominant in “QUAL/QUAN”)
- ”+” = concurrent approach
- ”–>” = sequential approach
convergent parallel or triangulation
used to simultaneously obtain different but complementary data
embedded
may be sequential or concurrent; one type of data is used to support the other type of data; may be QUAL(quan) or QUAN(qual)
-qualitative may come first and take priority over quantitative (QUAL(quan)) or quantitative may come first and take priority over qualitative (QUAN(qual))
explanatory
sequential; quantitative data is collected first and qualitative data is collected second and used to explain the quantitative data
-trying to explain what’s going on