Electronic interactive media allow researchers to

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Electronic interactive media allow researchers to reach a large audience, personalize individual messages, and interact using digital technology. Non-interactive Media: The traditional questionnaire received by mail and completed by the respondent does not allow a dialogue or an exchange of information providing immediate feedback. This does not mean that is without merit, just does not have as much flexibility Downloaded by:: bryce0736 | [email protected] Distribution of this document is illegal
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Stuvia.com - The study-notes marketplace Advantages and Disadvantages of Typical Survey Methods Downloaded by:: bryce0736 | [email protected] Distribution of this document is illegal
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Stuvia.com - The study-notes marketplace STEP 2: Primary Research Experiments - Ch 12: Creating an Experiment: Experimental subjects: o The sampling units for an experiment, usually human respondents who provide measures based on the experimental manipulation. Independent Variable: o Variable is unchanged by other variables that are being measured. Dependent Variable: o What is measured and affected during the experiment. Control variables: o Constant and unchanged; strongly influences values; it is held constant to test the relative impact on the independent variables. Extraneous variables: o Undesirable variables that influence the relationship between the variables that the experiment is examining Independent variable main effects and interaction: o Main effect: experimental difference between dependent variable means difference between the different levels of any experimental variable. o Interaction effect: differences in dependent variable means due to a specific combination of independent variables Designing an Experiment to Minimise Experimental Error: Manipulation of Independent Variable: Experimental and Control Groups: o Experimental group: a group of subjects on whom the experimental treatment is administered o Control Group: A group of subjects on whom no experimental treatment is administered. Several Experimental Treatment Levels More than one independent variable Related measures: experiments in which individual subjects are exposed to more than one level of an experimental treatment. Selection and Measurement of the Dependent Variable: Downloaded by:: bryce0736 | [email protected] Distribution of this document is illegal
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Stuvia.com - The study-notes marketplace Selection and Assignments of Test Units: Test units: the subjects or entities whose responses to the experimental treatment are measured or observed Sample selection and random sampling errors Randomization Matching Control over extraneous variables Experimental Confounds: there is an alternative explanation beyond the experimental variables for any observed differences in the dependent variable.
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