CHAPTER III RESEARCH METHOD
A. Research Design
The data measured are in the form of numbers. The method of the research is experiment. It concerned primarily with discovering the effectiveness
between or among interrelationship of two variables at the same time. The research aim is to reveal and describe the effectiveness of the use of
multi- sensory modalities includes visual; auditory; and tactile- kinesthetic activities in the vocabulary mastery of Seventh Grade Students in first semester of
SMP Diponegoro 10 Pekuncen, Banyumas, in Academic year 2009- 2010. The design of this research is a true experimental design with pre-test and post-test
procedure. According to Stephen Isaac and William B. Michael 1981:52 the purpose of true experimental research is:
to investigate possible cause and effect relationships by exposing one or more experimental groups to one or more treatment conditions and comparing
the results to one or more control groups not receiving the treatment
There are two kinds of groups; they are the experimental and the control group. Either experimental and control group have different treatments; the
experimental group is treated by using sensory preferences of learning style while there is not treatment in another one
. Those treated groups have the same materials based on the curriculum and syllabus and in the same month and semester. At the end
of treatment, the experimental group and the control group received a post-test, then researcher calculates the compared findings to find the significant differences
54
between the experimental and control group and among sensory preferences learning style. The following is the design of the true experimental research:
G1 random T1
X T2
G2 random T1
T2 Research Design
Adapted from: Evelyn Hatch and Hossein Farhady, 1982:22 Note:
T1 : The Pre-test
X : The treatment T2 : The Post-test
G1 : The experimental Group G2 : The Control Group
B. Research Variables
According to Evelyn Hatch and Hossein Farhady 1982: 13-15, variables can be defined as “attribute of a person or of an object which “varies” from person to person
or from object to object.” They also classify it as Independent and dependent variables which researcher is possible to intervening and control as well. The independent
variable is the major variable which researcher hopes to investigate which usually uses ‘X’ symbol of letter. Meanwhile the dependent variable is the variable which researcher
observes and measures to determine the effect of the Independent variable, which usually uses ‘Y’ symbol of letter.
The title of this thesis is ‘The influence of Learning Styles towards The Vocabulary Mastery of The Students of SMP Diponegoro 10 Pekuncen,
Banyumas.’ Relating to the research aims, the questions, and the hypotheses addressed in this research, the variables of this study are:
1. Variable X Independent Variable is the influence of sensory preferences Learning Style to Junior High School.
2. Variable Y Dependent Variable is the mastery of English vocabulary in SMP Diponegoro 10 Pekuncen, Banyumas.
C. Population and Samples