production,  based  on  the  evidence  only  partial,  such  us  rules  may  produce incorrect pattern.
c. Errors encouraged by teaching material or method
The  teaching  material  or  method  can  also  contribute  to  the  student’s errors.  Unfortunately,  these  errors  are  much  more  difficult  to  classify,  as  Pit
Corder admits this: ―… it is, however, not easy to identify such errors except in  conjunction  with  a close  of the materials  and  teaching technique to which
the  learner  has  been  exposed.  This  is  probably  why  so  little  is  known  about them.‖
15
The writer concludes that there are three sources of error according to Hubbard et.al. They are mother-tongue interference which actually same with
the ―interlingual‖ term from Brown, overgeneralization which caused by the insufficient knowledge of the learners about the rule of their target language,
andthe last source is errors encouraged by teaching material or method which similar with what Brown named ―context of learning.‖
The writer summarizes what some experts have explained above. As a whole, there are three main sources of errors. First, error happens because the
influence of the student’s mother language is called interlingual. Second, error happens  because  the  target  language  itself  is  called  intralingual.  Third,  error
happens  because  the  influence  of  the  process  in  teaching  and  learning  when the teachers explain the language.
4. Differences Between Mistake and Error
Learning a language is fundamentally process that involves making of mistakes or errors. The mistakes include with  vocabulary items,  grammatical
pattern and sound patterns as well. Based on Corder in Susan and Larry, ―mistakes are akin to slips of the
tongue. That is, they are to recognize it as mistake and correct it if necessary. An  error,  on  the  other  hand,  is  systematic.  That  is,  it  is  likely  to  occur
15
Peter Hubbard, etal., A Training Course for TEFL,New York: Oxford University press, 1983, pp140
—144.
repeatedly and is not recognized by the learner as an error.‖
16
It means that an error is something that learner do not realize it and always occur, and mistake
is something that learner can correct it if needed because they know where the wrong on their work is.
According to Hubbard et.al, ―Error caused by lack of knowledge about
the target language English or by incorrect hypotheses about it; and mistakes caused by temporary lapses of memory,  confusion, slip of the tongue  and so
on.‖
17
Based on the statements above, error can appear due to the insufficient knowledge  or  the  inappropriate  rule  about  the  language  being  learned;  while
mistake  happens  because  of  the  learner  forget  about  the  rule  or  their carelessness when do the work.
Furthermore,  Brown  explains  that;  A  mistake  refers  to  performance error that is either a random guess or a ―slip‖ in that it is a failure to utilize a
knownsystem correctly. All people make mistakes, in both native and second language  situation.  While  error  is  a  noticeable  deviation  from  the  adult
grammar  of  a  native  speaker,  reflects  the  competence  of  the  learner  and  an erro
r  that  reveals  of  a  portion  of  the  learner’s  competence  in  the  target language.
18
Corder  made  a  distinction  between  a  mistake  and  error.  Whereas  a mistake is a random performance slip caused by fatigue, excitement, etc., and
therefore  can be  readily  self-corrected,  an error is systematic deviation made by  learners  who  have  not  yet  mastered  the  rules  of  the  L2.  A  learner  cannot
self-correct  an  error  because  it  is  a  product  reflective  of  his  or  her  current stage of L2 development, or underlying competence.
19
Fi siak distinguished between error and mistake as follows: ―mistakes
are  deviations  due  to  performance  factors  such  as  memory  limitations  e.g., mistakes in the sequence of tenses and agreement in long sentences, spelling,
16
Gass and Selingker, loc.cit.
17
Hubbard, loc.cit.
18
Brown, op.cit, 2007, p. 257.
19
Diane Larsen-Freeman and Michael H. Long, An Introduction to Second language Acquisition Research, London: Longman, 1991, p. 59.
pronunciations,  fatigue,  emotional  strain,  etc.  errors,  on  the  other  hand,  are system a given stage of learning.‖
20
According to the understanding of mistakes and error above, it can be distinguished  the  difference  between  mistakes  and  errors.  Mistakes  are
unsystematic  of  production  which  the  students  could  correct  their  own mistakes  if  their  attention  in  focus  and  they  realize  what  mistakes  that  they
had done. In the opposite, students do not understand that they had done and consistently do the same error. They find it so hard to correct the errors they
made.  Furthermore,  a  mistake  can  be  self-corrected  by  the  students  but  an error cannot be self corrected by the students.
B. Error Analysis
1. Understanding of error analysis
There  are  many  understanding  of  error  analysis  that  is  suggested  by some
experts. According to Gass and Selingker, ―Error analysis is a type of linguistic analysis that  focuses on the errors learners make.‖
21
It  means  that error  analysis  is  a  kind  of  linguistic  analysis  that  concentrates  on  the  errors
made by learners. Brown  s
tates  that  ―error  analysis  is  the  fact  that  learners  do  make errors and that these errors can be observed, analyzed, and classified to reveal
something of the system operating within the learner, led to a surge of study of learner’s  errors.‖
22
It  implies  that  error  analysis  is  a  procedure  including observing,  analyzing  and  classifying  the  errors  on  the  second  language  rules
and disclosing systems controlled by the learners. Meanwhile,  according  to  James,  ―error  analysis  is  the  process  of
determining  the  incidence,  nature,  causes  and  consequences  of  unsuccessful language.‖
23
In  other  words,  error  analysis  is  the  procedure  to  decide  the occurrence, nature, reasons and results of failed-learning of a language.
20
Jack Fisiak, Constractive Linguistics and the Language Teacher, New Jersey: Prentice hall,Inc, 1987, p. 205.
21
Gass and Selingker, op.cit, 2008, p. 102
22
Brown, op,cit, 2007, p.259
23
James, op, cit, 1998, p.1
Based  on  some  definitions  above,  it  can  be  concluded  that  error analysis  is  a  type  of  analysis  which  includes  the  process  of  observing,
analyzing  and  classifying  the  errors  on  the  second  language  rules  and disclosing  systems  controlled  by  the  learners.  It  also  can  be  said  as  way  to
investigate  the  error  made  by  students  to  get  some  important  data  about students’  difficulty  in  learning  a  language.  It  is  believed  by  knowing  more
detail  about  problems  faced  by  the  students  and  solve  it,  the  teacher  will improve their teaching to avoid their students in making the same error again.
2. The Procedure of Error Analysis
There are five steps in conducting an error analysis, they are: 1.
Collecting of a sample of learner language The type of data collected can have a marked effect on the result of an
error  analysis,  as  a  result  of  the  different  production  processes  which  they typically  involve.  For  example,  Logoco  found  differences  in  the  number  and
type  of  errors  in  samples  of  learner  language  collected  by  means  of  free composition, translation, and picture composition.
24
2. Identification of Errors
The definition of ‘error’ is problematic, as James admits. The difficulty centers  on  a  number  of  issues.  The  first  is  whether  grammatically  i.e.  well-
formedness  or  acceptability  should  serve  as  criterion.  An  utterance  may  be gra
mmatically  correct  but  pragmatically  unacceptable.  ‘I  want  to  read  tour newspaper’  addressed  a  complete  stranger  is  grammatical  but  pragmatically
unacceptable.
25
3. Description of Errors
24
Rod Ellis, The Study of Second Language Acquisition, New York: Oxford University Press, 2008, p. 46
25
Ibid.,pp. 47 —48.