PSYC 2030 Chapter Notes - Chapter 5: Simple Random Sample, Convenience Sampling, Systematic Sampling
14 Dec 2016
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In opinion polls the opinion of the sample population is measured in order to estimate the amount of support a particular opinion has in a general community. If you measure dependent variable and manipulate iv you are doing an experiment. Surveys tend to be concerned with measuring naturally occurring relationships. If you measure both then you are doing a survey between variables. Experimental research cares about relationship between two variables. In surveys you can have a bigger sample because you can give surveys to more people. They seek to establish control so that they can generalize observed processes to a population where the same conditions are found. Some surveys actually involve manipulation: those that use split ballot technique. A survey research procedure whereby experimental manipulation are included. The most obvious form involves randomly selected participants receiving different questionnaires. In effect, split-ballot techniques are not surveys but experiments. Surveys iv are the variables that researcher believes to be casual.
