Babkina, V. (2018). Phonological interference of mother tongue over the English

3.2
 
Design of the investigation
 
This investigation was designed by stages based on research design 
proposed by 
Cohen, L. and Manion, L
81
.
First, the purpose of the study was formulated. Second, the 
investigation questions and its variables were defined. Third, the 
methodology of the investigation was selected. Then, the population of 
the study was selected. Finally, the techniques and instruments for 
gathering data were designated. 
3.2.1
 
Investigation questions 
 

What are the typical cases of phonological interference of L1 
among Peruvian learners over their English language 
consonant sounds pronunciation?

To what extent does each case of phonological interference 
examined in the paper impede meaningful communication? 

Will specific pronunciation activities and instructions applied 
in the classroom help Peruvian EFL learners improve the 
pronunciation of problematic English consonant sounds due to 
phonological interference?
The development of the investigation is presented below
.
Part 1 of the investigation is the research dedicated to selecting and 
analysing the cases of phonological interference of the Peruvian learners´ 
mother tongue over their English language consonant sounds 
pronunciation.
81
Cohen, L. & Manion, L. (1985): 
Research methods in education.
(2 nd. Edn.), 
London: croom Helm.

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49 
Part 2 is the intervention aimed at achieving the principal purpose 
of the study which is proving or disproving the hypothesis of the 
investigation. The data has been collected by means of pre-testing and 
post-testing. The investigation was applied to a sample group and a 
control group.
The whole project took around two academic semesters with one 
semester for each part. The table below represents the development of 
this work.