and  the weaknesses  of  the  action.  The  researcher  and  the  collaborators shared opinions, feelings, and evaluations on the teaching learning process based on the
data collected through the instruments. They worked together to attain the general finding of one complete  cycle.  Finally, it  was used to draw conclusions  whether
the students’ writing ability improved or not.
I. Validity and Reability of the Data
To  make  the  data  valid  and  reliable,  the  researcher  used the  kinds  of validity  criteria  proposed  by  Anderson  in  Burns  1999.  They  are  democratic
validity, outcome validity, process validity, dialogic validity and catalytic validity. They are explained as follows:
1. Democratic validity
The  democratic  validity was obtained  by  doing  collaboration  with  the English teacher and the students as the data resources. They have the right to give
their opinions, ideas and suggestions about the implementation of the actions. The researcher interviewed the English teacher and also the students before and after
the teaching process to get the information on their perspectives.
2. Outcome validity
The outcome validity in this research was  gained by looking at the result of the actions. The researcher together with the collaborators analyzed the success
and the failure of the action research in every cycle.
3. Process Validity
The process validity was obtained by doing a triangulation technique. The researcher reported the result of the implementation of the process approach from
two different points of view. They were from the collaborator and the students of VIII C.
4. Dialogic Validity
In  order  to  gain  the  dialogic  validity,  the  researcher  had  conducted the discussion with the English teacher, the second collaborator, and the students on
what she has done during the implementation of the research.
5. Catalytic Validity
Catalytic validity  relates  to  the extent  to  which  the  researcher  allows participants to deepen their understanding of the social realities of the context and
how  they  can  make  changes  within  it.  To fulfill this  validity,  the  researcher identified  the  changes  which  occured during  and  after  the  action  by  using  some
interviews. In  addition,  the  trustworthiness  of  the  data was also  gained  by  using
triangulation. According to Altrichter et al. 1993 in Burns 2010, triangulation allows  us  to  get  grounded  perspective  from  all  the  people  involved  rather  than
relying on a limited set of informers. In this research, she used time triangulation, space triangulation, and investigator triangulation.
1. Time triangulation
The data were collected  at  different  points  in  time.  The  researcher conducted the interview with the English teacher and the students before and after
the actions.