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Background
Experimental research can be conducted in two ways by employing a within-subjects or a between-subject approach. In a within-subject approach, the people who are responding to the survey can access all the items of survey. On the contrary, a between subject approach allows a respondent to access one item of the survey (Fisher, 1966). In light of applying the two approaches to this question, it is important to understand that the survey involves three types of advertisement that are disbursed through email to the respondents in order to convince the respondent to take survey (Jha, 2008).
Within-Subject Approach
In this approach, the researcher will compose three emails. The first email will be portraying a link that redirects the respondents to the survey site. This link will not provide any information concerning the beneficial aspects of carrying out the survey. The second advert will contain the link and a message suggesting that the efforts of the respondents will be compensated by donating $10 to charity. Lastly, the researcher will compose a message promising the respondent of winning $1000 for carrying out the research. The researcher will identify potential respondents who will participate in the survey and obtain their email contacts.
The three emails will be sent to each respondent such that they will have three options to choose according to their preference. The researcher will prepare a recording book where the responses for each respondent are recorded for evaluation. This approach will involve few respondents because the respondents are presented with all the options available for the survey (Knobe, 2008).
Between-Subjects Approach
This approach aims at providing each respondent with a single option of survey (Mahmood, 2010). Therefore, the researcher will compose the email messages containing the information that is explained in the previous approach. Then, the samples will be selected from the population and their contacts obtained. The researcher will select the respondents who will receive the plain link and send it to them. The second group of respondents will receive a message for $10 dollars donation while the last group will receive a message promising to give a token of $1000 dollars upon carrying out the survey. The responses will be collected through the same email and the statistic determined in order to compare the number of people who responded from each group.
Advantages of Between-Subjects Approach
Between-subject approach has several advantages based on exposing a single option to each of the respondents. First, it saves a lot of time during survey since a respondent can answer a take one survey rather than taking all the surveys available (Montgomery, 1991). This implies that the cumulative time will be less that the time used to complete the surveys using within-subject approach which requires them to take more than one survey.
The second advantage of using between-subject approach is based on avoiding biased responses. In this light, it is important to note that the allowance of taking more than one survey can force the respondent to take double stands that can lead to biased information (Salkind, 2010). On the other hand, responding to a single survey prevents the respondent from comparing the three options and respond to the one provided by the researcher as if it is the only one. Lack of biasness makes this approach a better method of carrying out experimental research despite its weakness which forces the researcher to involve more respondents than the latter (Walker, 2010). This conclusion emanates from the prioritizing the nature of outcomes obtained from the research rather than the bulk of logistics which are incurred when using this method.
References
Fisher, R. A. (1966). The design of experiments ([8th ed.). Edinburgh, London: Hafner Publishing Company.
Jha, N. K. (2008). Research methodology. Chandigarh: Abhishek Publications.
Knobe, J. M. (2008). Experimental philosophy. Oxford: Oxford University Press.
Mahmood, M. F. (2010). Proceedings of the Conference on Water Waves: Theory and Experiment, Howard University, USA, 13-18 May 2008. Singapore: World Scientific.
Montgomery, D. C. (1991). Design and analysis of experiments (3rd ed.). New York: Wiley.
Salkind, N. J. (2010). Encyclopedia of research design. Thousand Oaks, Calif.: Sage.
Walker, P. (2010). Environmental science experiments. New York: Facts on File.
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