Reliability and Validity of Research Methodology Selection of the…                                                                Reliability and Validity of Research MethodologySelection of the appropriate sample is critical to the reliability and validity of research methodology. The sample must be representative of the population that is being studied. Researchers often report both the inclusion and exclusion criteria for the sample. There are many different methods for selecting a sample and random sampling provides the high control of outside variables but is often difficult to utilize in many studies.For this Discussion, please review the article by Zaccari, B., Callahan, M.L., Storzback, D., & McFarlanem N. (2020). Yoga for veterans with PTSD: Cognitive functioning, mental health, and salivary cortisol. Psychological Trauma: Theory, Research, Practice, and Policy, 12 (8), 913-917. http://dx.doi.org/10.1037/tra0000909Explain the strengths and weaknesses of the sampling method used in this study and if the sampling method promoted reliable and valid results. Explain if there is anything the researcher could have done to improve the sampling process.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        Health Science Science Nursing NURS 3151

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