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CHAPTER III RESEARCH METHODOLOGY
This chapter describes the research methodology including the period on which the study was conducted, the number of participant of this study, the
instruments of the study as well as the way administrating those instruments. The procedure of collecting and analyzing the data were also included. These are
clearly presented in time and place of the study, research design, population and sample, research instruments, technique of collecting the data and technique of
data analysis.
A. Time and Place of the Study
The study was conducted from May to June 2016 in SMA Kharisma Bangsa which is located in Jl. Terbang Layang No. 21, Pamulang, East
Tangerang, Banten.
B. Research Design
This study is quantitative study as the research analysis used statistical and numerical data to test the hypotheses. This study involved two variables including
critical thinking skill and reading comprehension skill. The design used in this study was correlational design. It was employed to
measure the relationship between two variables covering an independent variable critical thinking skill and a dependent variable reading comprehension skill by
using correlational analysis. ―A correlation is a statistical test to determine the
tendency or pattern for two or more variables or two set of data to vary constantly. In the case of two variables it means that two variables share common variance, or
they co vary together‖.
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This design was used to find out the relation between two variables or more and to see the influence of each other. In this case, this design
was employed to seek the relation between critical thinking skill and reading comprehension skill.
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John. W. Creswel, Educational Research: Planning, Coducting and Evaluating Quantitative and Qualitative Research,
Boston:Pearson Education İnc.,2012 , 4th ed., p. 338.
C. Population and Sample of the Study
The population of this study was eleventh grade students of SMA Kharisma Bangsa, academic year 20152016, included 80 students from 4
Classes. From the population, 35 students were chosen as the participants of this study. 35 students who has been selected as the sample of the study was
determined by using purposive sampling technique. Purposive sampling technique means taking sample based on the certain purpose. Two classes were determined
as the participants of this study based on the average ability both have. In this case, 35 students from eleventh graders B and eleventh graders D class were
selected and being the subjects of this study.
D. Research Instruments
In this study, there were two instruments to collect the data which were administered to the participants students of SMA Kharisma Bangsa. The
instruments were critical thinking test which attempt to measure students critical thinking skill, and reading test which is used to measure students reading
comprehension skill. Those instruments were used in order to achieve the goal of the study; to find out the correlation between those variables. Here, is the specific
information of the research instruments:
1. Critical Thinking Test
Cornell Critical Thinking Test was used to test students critical thinking skill in this research. The CCTT is a standardized test developed by R. Ennis,
Millman, and Tomko in 1980
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. In this study, level X was chosen as the instrument to measure the students’ critical thinking skill as the samples of
this study were twelfth grade students. This test was considered suitable to be used in the present study because it is claimed by its developers to be a
general critical thinking test which attempts to measure the critical thinking skills as a whole and it is best used for grade 9 to 12. Moreover, the test has
been widely used throughout the world more than twenty years to measure critical thinking skill. Additionally, level X was chosen by several researchers
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R. Ennis, Millman, and Tomko in 1980. Vocabulary learning and instruction. Review of Research in Education, 13, 91-128.
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