Quantitative Research Design Lesson 1 PDF

Unit 5: Quantitative Research Design and Methodology Lesson 1 Quantitative Research Design Practical Research 2 Senior High School Applied - Academic How do you want your data to be measured and collected? ENGAG EXPLO EXPLAI EXTEN EVALUA 2  Differentiate the three...

Unit 5: Quantitative Research Design and Methodology Lesson 1 Quantitative Research Design Practical Research 2 Senior High School Applied - Academic How do you want your data to be measured and collected? ENGAG EXPLO EXPLAI EXTEN EVALUA 2  Differentiate the three research designs according to purpose Learning and procedure. Objective Distinguish the research design s At the end of the used in a quantitative research. lesson, you should be able to do the following: Assess the quality of a specific research design used in a quantitative research study. ENGAG EXPLO EXPLAI EXTEN EVALUA 33 Analyze the Situation 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. ENGAG EXPLO EXPLAI EXTEN EVALUA 44  Quantitative Research Design Quantitative research designs are empirical, straightforward, and can test their reliability and validity. ENGAG EXPLO EXPLAI EXTEN EVALUA 5 What are the factors to consider in using quantitative research design? 6  Quantitative Research Design Quantitative research designs vary in terms of the following: the intent use of manipulation procedures used ENGAG EXPLO EXPLAI EXTEN EVALUA 77 Tip The research design of a study can easily be identified based on the abstract of a journal article. 8  Experimental Research Design The main purpose of the experimental research design is to find out whether an intervention considered as the independent variable has an effect on a dependent variable. ENGAG EXPLO EXPLAI EXTEN EVALUA 9 Experimental Research Design ENGAG EXPLO EXPLAI EXTEN EVALUA 10 10  Experimental Research Design An experimental design must contain the following elements: 1. treatment or intervention 2. controlling extraneous variables 3. randomization of participants ENGAG EXPLO EXPLAI EXTEN EVALUA 11 11 Example of a causal relationship ENGAG EXPLO EXPLAI EXTEN EVALUA 12 12  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. ENGAG EXPLO EXPLAI EXTEN EVALUA 13 13 Quasi-Experimental Design 14 ENGAG EXPLO EXPLAI EXTEN EVALUA 14 14 What other situations can quasi- experimental research design be used? 15  Correlational Design Correlational research studies the association between two variables but does not tell about its causality. ENGAG EXPLO EXPLAI EXTEN EVALUA 16 16 Example of a relationship between two variables ENGAG EXPLO EXPLAI EXTEN EVALUA 17 17 When is it appropriate to use a correlational research design? 18 Differences between positive and negative correlation Type Definition Example Positive As one variable Higher motivation level increases, so is the other of students is related to variable. This is also higher academic known as direct performance. relationship. Negative As one variable Higher stress level of increases, the other students is related to variable decreases. This lower academic is also known as performance. inverse relationship. ENGAG EXPLO EXPLAI EXTEN EVALUA 19 19  Descriptive Research Design The purpose of descriptive 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. ENGAG EXPLO EXPLAI EXTEN EVALUA 20 20 What are some limitations of a descriptive research design? 21 Three most common types of descriptive research 1.Survey Research explores the trends in the characteristics of a group of people 2.Demographic Research describes basic life events ENGAG EXPLO EXPLAI EXTEN EVALUA 22 22 Three most common types of descriptive research 3. Epidemiological Research studies different patterns of disease and health ENGAG EXPLO EXPLAI EXTEN EVALUA 23 23 Remember Descriptive research designs explain different patterns of information about a target population. 24 Analyze the Situation 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. ENGAG EXPLO EXPLAI EXTEN EVALUA 25  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. ENGAG EXPLO EXPLAI EXTEN EVALUA 26  Quick Check 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. ENGAG EXPLO EXPLAI EXTEN EVALUA 27 27  Quick Check Why is a quasi-experimental design cannot be considered as a true experiment? ENGAG EXPLO EXPLAI EXTEN EVALUA 28 28  Wrap Up 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. 29  Wrap Up 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. 30 Wrap Up  Bibliography 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. 32