Reliability and Validity of Research Methodology

This week, you explore the different categories of quantitative research designs used in a clinical research studies. These include experimental, quasi-experimental, descriptive and correlational designs. You will examine the basic characteristics of each design (e.g., causality, control, bias, validity, randomization, probability). You will also examine the basic features of the methods used to conduct most quantitative research designs, such as sample selection, data collection and measurement of variables, as well as data management and analyses.
-For this assignment, read the article by Zaccari, Callahan, Storzback, & McFarlane (2020), listed in the resource section for this week.

Prepare at least a 250-word post discussing the strengths and weaknesses of the sampling method used in this study and if the sampling method promoted reliable and valid results. Include in the discussion if there is anything the researcher could have done to improve the sampling process.