Explain a strategy to mitigate each of these threats. Then, identify a potential ethical issue in quantitative research and explain how it might influence design decisions.
There are various threats caused to internal validity in quantitative research and one among them is maturation which refers towards the occurrence of certain changes in the subject during the time of study and which was not a part of the study and might affect the result of the study(Christ, 2007). The threat caused due to maturation can be avoided by having a shorter duration of an experiment and by using a control group for the study. The threat caused to external validity is Experimenter effects which mean that the experimenter can influence the participant’s performance. This threat can be avoided by using the strategy of blind data collection in which the researcher himself does not collect the information, but he train an observer to collect the data which is completely unaware of the study and its purpose. The ethical issues involved in the quantitative research are research design,data interpretation, participant/researcher relationship,expecting the effect of various methods on specific participants, balancing the benefits considering the potential harm. These ethical issues may influence the design decision by using an inappropriate size of samples, collecting data which are not appropriate, failing to preserve the data for a long time, collecting the data without having appropriate control, facing problems while editing the data, use of the inappropriate statistical test. This approach is mainly associated with objectivity. The results are more readily interpreted and analyzed.When a certain topic is researched by using quantitative approach, then it helps to determine the relationship between a dependent variable and anindependent variable. The data in this approach is collected by using structured instruments and are based on large sample size.
Christ, T. (2007). Experimental control and threats to internal validity of concurrent and nonconcurrent multiple baseline designs. Psychol. Schs., 44(5), 451-459.
Sedgwick, P. (2010). Internal and external validity. BMJ, 340(mar31 1), c1705-c1705.