Evidence Base Practice Week 3Online version Video Clip Based Quiz by Alan Ramsay 1 What type of research is being carried out here? Select one or more answers a Quantitative b Qualitative 2 What is the Independent Variable in this experiment? Select one or more answers a Sunlight b Watering frequency c Soil type d Pot size 3 How would you best describe this stage of the research process? Select one or more answers a Research Design b Sampling c Literature review d Data analysis 4 Would you describe this study as without bias? Select one or more answers a Yes b No 5 What are the possible sources of bias in this trial? Select one or more answers a Sampling Bias b Selection Bias c Recall Bias d All of the above Explanation 1 This research appears to be about gaining an understanding of experiences of those learning to drive. Qualitative Research is usually considered most appropriate for this. 2 The Independent Variable is the one the researchers manipulate or change. The Dependent Variable is the result or effect which they hope to measure. 3 The researcher is talking about the way the numbers can form a conclusion or an underlying 'message' by a process of data analysis. 5 There are some flaws in this study: Sampling Bias: All the subject are members of a meditation group and are therefore likely to have less anxiety than members of the general population. This means the results cannot be generalised to other populations. Selection Bias: All the subjects are able to choose if they want to try the new drug. As there is no random assignment in this trial there is no way to eliminate the placebo effects of the drug. Recall Bias: The drug company plans to contact the participants three months after trial has ended. As the participants will know what is expected of them they are, also more likely to report less anxiety.
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