Research Design RESEARCH METHODOLOGY

CHAPTER III RESEARCH METHODOLOGY

A. Research Design

in this research, the researcher use experimental design. Experimental design is the general plan to carrying out a study with and active independent variable. The design is important because it determines the study’s internal validity, which is the ability to reach valid conclusion about the effect of the experimental treatment on the dependent variable. 40 It means that experimental design is a research design that is used to find the influence of one variable to another. According to Sugiono there are two kind of experimental design they are true experimental design and quasi experimental design. 41 In this case, the researcher used the experimental research to know the influence of using Acting from a Script towards students’ speaking ability. The researcher used quasi experimental. Quasi-experimental design is a research design that includes assignment, but not random assignment participant to groups, because the experimenter cannot artifically create groups for the experiment. 42 The researcher used quasi experimental design because the researcher cannot randomly allow the researcher to create new class for the research. It means that we do not have the opportunity for random assignment of the students to special groups in different conditions. The variety of quasy experimental designs which can be devided into two main categories , one of them is pretest-postest control group design. 43 In this research the researcher used quasi experimental pre-test post-test group. Creswell says that we can apply pre-test and post-test group design approach to quasi experimental design. 44 The researcher select two classes consisting of experimental and control class. The experimental class taught by using Acting from a Script as a treatment. Whereas, the control class taught by using the Discussion technique from the teacher. In this research, the students was given pre-test to know their speaking ability before treatment and post-test to know their speaking ability after the treatment. The pre-test and post-test conducted for control and experimentsl class. The research design is as follows: G 1 Random = T 1 X T 2 G 2 Random = T 1 O T 2 Where : G 1 : Experimental Class which receives the treatment of using Acting from a Script T 1 : Pre- test this is given to see the students’ Speaking ability T 2 : Post test this is given after the treatment to see the result after applying the treatment X : Treatment by using Acting from a Script O : Treatment by using Discussion technique 45 This research, consists of experimental class and control class. The experimental class was taught by using Acting from a Script as treatment whereas in the control class was taught by using Discussion technique. Pre test was given to experimental class and control class before treatment to know the students’ early achievement in speaking ability. Then the treatment was done only to the experimental class while in control class is taught using discussion technique. The posttest was given to both classes to know students achievement after the treatment.

B. Variables of the Research