III. RESEARCH METHODS
In this chapter, research methods are discussed in order to answer the research questions and achieve the objectives of the research. The research
method consists of research design, subject of the research, data collecting techniques, research procedures, research schedule, validity and reliability, data
analysis, and hypothesis testing. 3.1. Research Design
The research was intended to explore the effects of Facebook closed group on peer correction activities. It employed both qualitative and quantitative
methods conducted through observation, writing tests, and document analysis. Additionally, since there was no access to employ two groups in the research site,
the research was also conducted based on the quasi-experiment method which applied one-group time series design modified from the idea suggested by
Setiyadi 2006: 137. Observation and document analysis were conducted to observe the studen
ts’ peer correction activities. Besides, in order to find out the effects of Facebook closed group on the
students’ writing achievement, there were four writing tests administered and two treatments conducted, namely traditional and Facebook closed group peer
corrections. The first two writing tests were corrected through traditional peer correction in the class. It was conducted to train and familiarize the students with
peer correction activities before performing Facebook closed group peer correction. After having enough traditional peer correction practice, the next two
writing tests were corrected after performing Facebook closed group peer correction.
Specifically, one group time-series design employed in the research can be represented as follow:
T1 O T2 O T3 X T4 X
T: Writing Tests. O: Traditional Peer Correction.
X: Facebook Closed Group Peer Correction. Setiyadi, 2006: 137.
3.2. Subject of the Research
Subject of the research was chosen purposively at one class of the 1
st
year of college students of STBA Teknokrat Bandar Lampung of academic year 2015-
2016 in the odd semester. The class consisted of 29 students, but there were 12 students who voluntarily participated in the research. They were divided into four
groups as subject of the research based on their preliminary ability in writing, ranging from the lowest scores to the highest. The reason for choosing 1
st
year of college students as subject of the research was to promote their critical thinking
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