DQ The theoretical foundations of qualitative and quantitative methods are very different, but many researchers believe both methods should be used in the research study to increase validity and reliability NRS 433 Topic 5 DQ 1 Replies to Mireille Ulysse The application of quantitative and qualitative research methods is different, but when the two are … Continue reading DQ: The theoretical foundations of qualitative and quantitative methods are very different, but many researchers believe both methods should be used in the research study to increase validity and reliability