and uncertainly about the
appropriateness of the control sample.
2. Prospective Study
․Cohort Study
; One enrolls a group of persons and follows them over a certain period to observe the time at which a disease or another end point develops.
․Clinical trial
; A prospective study comparing the effect and value of intervention(s) against
Introduction
Traditional approach
: an airport directly faces the demand of final consumers (passengers and shippers), thus by-passing airlines operating at the airport.
Applying Modern
the method to investigate vertical structure Of airport, airlines(downstream firms) and customers
Objective of this paper
to investigate how the market structure of down Stream carriers
would affec
and research by scholars and experts on SLA and feedback, it is revealed that there are many methods of feedback and advantages for each respective method. For our study, our group decided to focus on the comparison among certain feedback methods to come to a potential conclusion on which can be the most effective for L2 learners. The questions which this paper seeks to answer are as follows: Doe
and the use of recasts, which is a more effective method?
Hypothesis
Negative feedback does have a positive impact on L2 learning.
18 Korea University students with varying levels of English skills and of different majors
Age: 20~23 years old
L1: Korean, L2: English
studied English only in Korea
usually started learning English in elementary school
on average, lear