Throughout this course, many opportunities are available to post an initial response to a Discussion topic as well as to respond to your classmate’s responses. After you have completed the reading, and without reviewing your classmate’s 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. After you have submitted your initial post, review some of your classmate’s posts and post at least two substantial responses to your classmates. Refer to the Discussion Board Rubric in Course Resources for specific grading requirements.

Once a researcher has chosen a topic to study, the first steps of the scientific method are to formulate a research question and hypothesis. For example, if a researcher wants to study the effect of exercise on grades, s/he might formulate a question of “is regular exercise associated with better academic performance?” and a hypothesis of “students who regularly exercise have better academic performance.” How s/he defines exercise and grades can be very important. For example, what is meant by regular? Is it exercising once a week every week or exercising 5 days a week most weeks? What is defined as exercise? Does vacuuming count? Lastly, how is academic performance defined and measured? Is it GPA or classes passed or school attendance? How the variables are defined and measure can greatly impact the study results and outcome.

Choose a topic of interest (you can use the same topic you used for the week 1 discussion if you want, but do not have to). With this topic,

1. Formulate a research question and hypothesis
2. Operationally define the variables you will use in this study
3. Discuss what scales of measurement you would want to use to measure these variables
4. Discuss how you would assess the reliability and validity of your study and your study measurements.

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