Lecture 2 Flashcards
Research design
the approach
population sample
time and place of data collection
tools and method of data collection
method of data analysis
quantitative
numerical
qualitative
can’t be measured continuously
usually collecting data that is descriptive of a phenomena
difference between qualitative and quantitative
qual-
words/ patterns and themes analysis/ varriables not manipulated/ results are mostly generalised
quan- investigative relations/ test hypothesis by numbers/ satistical analysis/ varibles are manipulated
type of research design
observational studies
experimental studies
critical apprasial studies
methodological studies
observational design
descriptive
analytical/ explorator- if comparison group
observational descriptive
describes data and charactersticis
cannot decribe the cause of the situation
cannot generalise
use descriptive satisitics
anlalytical observation
investigating relationships between studies
use different statistics
comparison group
why doe we use different time lines in analyticial descriptive
cheap
practical
ready access
examine data previously and see progression
issues with retrospective data
no control over data quality
missing data
not standised methods
change in measurement procedures
accuracy
reliability
propective time lines benefits
good control over data quality
reliable
accuracy
however, time consuming and expensive
cross sectional data
study a group of subjects at a point in time
time efficent
less expensive
longitudinal data
repeated data measurements
suggest casual relationships
expensive
time consuming
experimental controlled studies
intervention- variables controlled and manipulated
matched group- similar recives no intervention
correlation
measure the degree of association between variables
don’t control or manipulate factors but study natural vary
it isn’t cause
correlation adv/ disad
can study a large number of variables
study variables together
dis
correlation isn’t a cause
misused to identify causation
little control over extraneous variables
sytematic review
formal and sturctured approach where you review all literature avaliable
meta-analysis
statistical method used to combine neumerical results from studies included in systematic review
methodological studies
to test reliability and validity
