writing skills that was been scrutinized was argumentative writing. Therefore, this research is really new and different from the other research.
D. Conceptual Framework
Argumentative writing is one of writing skills considered as the most difficult among other writing skills. Thus, it is not easy to do for some certain
people. Composing argumentative writing needs some process and practice in order to be able to write effectively and correctly. The processes of writing
include; planning, drafting, revising and editing. Each stage of the writing is important and has each own role and goal.
Basically, the goal of argumentative writing is to convince and to persuade the reader. Therefore, in order to be able to convince the reader, it
needs the writer‟s argument, opinion as well as hisher views points of the matter issueproblem. Arguments and opinion given should have logic reason; it also
has to be proven by some evidence, data as well as others‟ opinion. This is way composing argumentative writing requires many other skills than other.
The ability of critical thinking is one of the skills needed in composing argumentative writing. It is because argumentative writing is considered to be a
manifestation of critical thinking skills, since a writer needs to analyse, evaluate and synthesize arguments, ideas or opinion and present it into logical and
reasonable text. Critical thinking is analytical thinking. It means that the ability of analyzing and evaluating are one of many skills of critical thinking.
The role of critical thinking is indispensable in composing argumentative writing. The relationship between those skills seems to be equal and parallel. It
means that if writers have good critical thinking skill, they are supposed to have good ability in argumentative writing. Meanwhile, if the writers lack of the
ability to think critically, they are supposed to have poor argumentative writing skill.
E. Research Hypotheses
This study proposes two hypotheses as follow:
1.
Research hypothesis : There is a significant relationship between critical
thinking skill and argumentative writing skill of the twelfth grade students of SMA Kharisma Bangsa, academic year 20152016.
2.
The null hypothesis : There is no significant relationship between critical
thinking skill and argumentative writing skill of the twelfth grade students of SMA Kharisma Bangsa, academic year 20152016.
