Scholarly and Peer Reviewed articlesEdit
Duolingo Effectiveness Study Edit
"The research study of Duolingo effectiveness was independently conducted in September-November of 2012. The study lasted for approximately eight weeks. A random representative sample was selected from Duolingo users who studied Spanish. The participants were at least 18 years of age, native speakers of English, not from Hispanic origin and not advanced users of Spanish, and all of the participants resided in the United States." (VESSELINOV and GREGO, 2012).
Learning a Language for Free While Translating the Web. Does Duolingo Work? Edit
"Launched in June 2012, Duolingo boasts already at the time of writing 300,000 active language learners ready for the task. This article independently assesses the extent to which Duolingo, at its current stageof development, meets those expectations"( Garcia, 2013) .
Validity, reliability, and concordance of the Duolingo English Test Edit
"Duolingo has developed a computer adaptive test of English competency for non-native English learners. This research study of the validity and reliability of the Duolingo English test was independently conducted from February- April of 2014. The study lasted for approximately eight weeks. Participants were recruited from Duolingo users who studied English, international students in several United States universities, and people who took Test of English as Foreign Language (TOEFL) at several TOEFL centers in China. Participants were at least 18 years of age and had taken the TOEFL within the last 18 months."(Ye,2014).
Duolingo as a new language-learning website and its contribution to e-learning educationEdit
Duolingo "has an incredibly well elaborated methodical and didactic system, therefore there is almost nothing to suggest. But as the biggest weakness is seen the lack of authenticity and the unlinked language sentences to the use of language in everyday life situations – this applies tothe lessons, not translations".(Jašková, 2014).
Preliminary linking results with IELTS and CEFR
"We study the validity of the Duolingo Certiﬁcate of English for high-stakes university admissions, using data from Carnegie Mellon University’s satellite campus in Rwanda. We ﬁnd that Duolingo scores submitted during the 2015 application process are signiﬁcantly correlated with IELTSTM scores (r = 0.834)."
- ↑ http://static.duolingo.com/s3/DuolingoReport_Final.pdf
- ↑ http://www.academia.edu/4832736/Learning_a_Language_for_Free_While_Translating_the_Web._Does_Duolingo_Work.
- ↑ https://s3.amazonaws.com/duolingo-certifications-data/CorrelationStudy.pdf
- ↑ Jašková, V. Bachelor Thesis. 2014. Online: http://is.muni.cz/th/342420/pedf_m/Duolingo.pdf
- ↑ Michel Bezy and Burr Settles. 2015. The Duolingo Certiﬁcate of English and East Africa:Preliminary linking results with IELTS and CEFR. https://s3.amazonaws.com/duolingo-papers/reports/DRR-15-01.pdf.