After you have completed the reading, and without reviewing your classmates responses, post your initial response to the following discussion. Your post should be at least 300-350 words in length and should extend the discussion of the group supported by your course materials and/or other appropriate resources.APA format and in text citationsPsychology and Research MethodHow does psychology research contribute to health knowledge and the mind and body relationship? There is a variety of research methods used in psychology. Correlation studies, experimental designs, ex post facto designs, cross-sectional studies and longitudinal studies. . Explain the difference between the four methods and choose the one you believe would be the most effective to conduct research on tobacco use and related diseases.