BA 3340 Lecture Notes - Lecture 13: Construct Validity, Nonprobability Sampling, Internal Validity
Document Summary
Dv- outcome hypothesis - your expectations, formulated as propositions or statements, concerning the relationships of variables on the basis of theory. All subsequent choices are driven by you ps hypothesis - 1 relationship! descriptive hypothesis. If you can not draw a model there is a problem ( not always) V not related primary sources - full text publications of studies, represent the original work secondary sources - compilations on info ( ex web of knowledge) good journal. Degree to which the research question has been crystallised. Investigating practical possibilities of conducting formal study descriptive research - frequencies, describe behaviour. Clearly defined hypothesis predictive research - cause-and-effect relations focus group (new products) Track changes over time quality criteria for research methods. Construct validity - do measurement instruments for theoretical constructs. Internal validity - study allow for drawing causal references. External validity - study allows for generalising to and across time, settings and individual. Availability of population element a good sample.
