PSYB01H3 Chapter Notes - Chapter 9: Nonprobability Sampling, Convenience Sampling, Construct Validity
Document Summary
Method used to select participants has implications for generalizing research results. Moth research projects involve sampling research participants from a population of interest. Samples may be drawn from any population using probability sampling for non-probability sampling techniques. When it is this important to accurately describe the population you must use probability sampling. Most research is more interested in testing hypotheses about behavior. Participants may be found in the easiest ways possible using non-probability convenience sampling techniques. They affects the ability to generalize your results to some larger population. Ample evidence supports that we can generalize ndings to other populations and situations. Increasing sample size increases the likelihood that you will. Most researchers pay attention to sample sizes in the research area being studied and select sample sizes typical for studies in that area. To manipulate and independent variable you have to construct an operational de nition.
