Thinking Framework THEORETICAL FRAMEWORK

20

CHAPTER III RESEARCH METHODOLOGY

A. Research Method and Design

1. Research Method

The method of this research was quasi-experimental research. Quasi- experimental research is also called post hoc, or after the fact, research because the actual research take place after the assignment of groups. Because assignment has already taken place, the researcher has a high degree, but not the highest degree, of control over the cause of whatever effects are being examined. 1 Quasi- experimental research by using pre-test and post-test control group design used in this research. The research is categorized as a quasi-experimental research about the effect of mind mapping technique on students’ writing of descriptive text. In quasi experimental research, the writer not give a random assignment as in true experimental research because randomly assigning to two groups would disrupt the classroom learning. 2 Quasi-experimental studies also focus on cause and effect, but they use pre-assigned groups. It focused on treatment and outcome.

2. Research Design

In addition, the pretest-posttest, nonequivalent control group design was chosen in this experimental research. Only two groups were required, an experimental group and a control group, for the design its simplest form 3 . It means that the treatments of the research are conduct through the implementation of two different methods or techniques in two different classes: experiment class and controlled class. There is Table 3.1 to make the explanation easier: 1 Salkind, Neil J, Exploring Research: Seventh Edition, New Jersey: Pearson Education, Inc, 2009, p. 14. 2 John W. Crasswell, Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research, Boston: Pearson Education. Inc.,. 2009.. p. 313. 3 Wiersma, William, Research method in education: an introduction Ninth Edition, USA: Pearson Education, Inc.,. 2009, p. 169. Table 3.1 Pretest-Posttest Nonequivalent Control Group Design Group Pretest Dependent variable Posttest C X 1 Treatment X 2 D Y 1 - Y 2 The table 3.1 shows there were different treatments between experimental and controlled class. The experimental class was taught by Mind Mapping technique and the controlled class was taught without by using Mind Mapping Technique.

B. Place and Time

This research was conducted at MTs. Yayasan Mathla ’ul Anwar Nurul Kamal YAMANKA. This school is located on Jl. LETKOL Atang Sendjaja, Bantar Sari, Rancabungur, Bogor. This research was carried out for 2 month in January- February 2015.

C. Population and Sample

1. Population

The population of the research was the seventh grade students. It was consist of 4 classes and 112 students. Each class consists of less than 25 students, starting from 7A up 7D.

2. Sample

This research used purposive cluster sampling to determine the sample. Based on the English teachers’ suggestion, the research should be conducted at the seventh grade of class 7C and 7D, MTs. Yayasan Matla ’ul Anwar Nurul Kamal YAMANKA, in first grade of academic year 20142015. Each class has 25 students, so total of students is 50 students. In conclusion, the experiment is will be done in two classes, and which, 7C as the Experiment Class and 7D as the Controlled Class.