ResearcQuantitative Research Design.pptx

Pr 2

1. Unit 5: Quantitative Research Design and Methodology L esson 1 Quantitative Research Design

2. How do you want your data to be measured and collected? ‹#›

3. ‹#› Differentiate the three research designs according to purpose and procedure. Distinguish the research design used in a quantitative research. Assess the quality of a specific research design used in a quantitative research study. ‹#›

4. ‹#› ‹#› A group of nutritionists wants to test the effect of Veggie X, a vegetable-based food supplement which is believed to increase the appetite of young children. The nutritionists compared two groups, one is the group who took the food supplement along with their meals and the other group was given their usual meals without the food supplement. They compared the amount of food consumed by the group of young children who were given Veggie X to those who did not take the supplement. Analyze the Situation

5. Quantitative Research Design Quantitative research designs are empirical, straightforward, and can test their reliability and validity. ‹#›

6. What are the factors to consider in using quantitative research design? ‹#›

7. Q uantitative research designs vary in terms of the following: the intent use of manipulation procedures used ‹#› ‹#› Quantitative Research Design

8. ‹#› The research design of a study can easily be identified based on the abstract of a journal article.

9. Experimental Research Design The main purpose of th e experimental research design i s to find out whether an intervention considered as the independent variable has an effect on a dependent variable . ‹#›

10. Experimental Research Design ‹#› ‹#›

11. An experimental design must contain the following elements : treatment or intervention controlling extraneous variables randomization of participants ‹#› ‹#› Experimental Research Design

12. Example of a causal relationship ‹#› ‹#›

13. Quasi-Experimental Design ‹#› ‹#› A quasi-experimental design requires the independent variable to be manipulated but it lacks a key element of an experimental design, which is randomization .

14. Quasi- Experimental Design ‹#› ‹#› ‹#›

15. What other situations can quasi-experimental research design be used? ‹#›

16. Correlational Design ‹#› ‹#› Correlational research studies the association between two variables but does not tell about its causality.

17. Example of a relationship between two variables ‹#› ‹#›

18. When is it appropriate to use a correlational research design? ‹#›

19. Differences between positive and negative correlation ‹#› ‹#› Type Definition Example Positive As one variable increases, so is the other variable. This is also known as direct relationship. Higher motivation level of students is related to higher academic performance. Negative As one variable increases, the other variable decreases. This is also known as inverse relationship. Higher stress level of students is related to lower academic performance.

20. Descriptive Research Design ‹#› ‹#› The purpose of d escriptive research design is to study a naturally occurring phenomenon or subject of interest. It simply describes a specific characteristic or behavior of a target population.

21. What are some limitations of a descriptive research design? ‹#›

22. T hree most common types of descriptive research Survey Research explores the trends in the characteristics of a group of people Demographic Research describes b asic life events ‹#› ‹#›

23. Three most common types of descriptive research 3. Epidemiological Research studies different patterns of disease and health ‹#› ‹#›

24. Descriptive research designs explain different patterns of information about a target population. ‹#›

25. Jamie and her group mates conducted a study exploring the extent to which parenting styles are related to the self-esteem of Filipino adolescents. The participants answered two questionnaires. The study revealed that parenting styles were positively related to the self-esteem of Filipino adolescents. Analyze the Situation ‹#›

26. Quick Check Mr. Araullo is a faculty member at Acacia High School, who wants to know the career preferences of their senior high school students. He asked all the students and found out that there are varying preferences of the students according to their academic track. ‹#›

27. Maria wants to know whether caffeine has an effect on the concentration level of college students. She randomly assigned her participants to two treatment conditions. One group was given regular coffee, while the other group was given a decaffeinated coffee. She then administered a concentration task. Quick Check ‹#› ‹#› ‹#› ‹#› ‹#›

28. Why is a quasi-experimental design cannot be considered as a true experiment? Quick Check ‹#› ‹#› ‹#› ‹#› ‹#›

29. ‹#› A quantitative research design can either be experimental , correlational , or descriptive . The key elements of an experimental research design are manipulation of the independent variable, control of extraneous variables, and randomization of participants.

30. ‹#› A correlational research design aims to describe the relationship between two or more variables. The most common research studies under descriptive research design are survey, demographic, and epidemiological research.

31. ‹#› Drummond, Karen Eich, and Alison Murphy-Reyes. Nutrition Research: Concepts and Applications. Massachusetts: Jones & Bartlett Learning, 2017. Kumar, Ranjit. Research Methodology: A Step-by-step Guide for Beginners. 3rd ed. London: SAGE Publications, Ltd., 2011. Leary, Mark R. Introduction to Behavioral Research Methods. 6th ed. New Jersey: Pearson, 2012. Mertler, Craig A. Introduction to Educational Research. California: SAGE Publications Ltd., 2015. Plano Clark, Vicki L., and John W. Creswell. Understanding Research: A Consumer’s Guide. 2nd ed. New Jersey: Pearson, 2015.