“…Factor analysis Saeed et al (2014), Grant et al (2012), Rojas et al (2016), Dörnyei and Chan (2013), Rodriguez and Shepard (2013), Kurt and Bilginer (2016), Kartchava (2016), Huang (2017), and Kieffer and Lesaux (2012) Regression Cakir and Solak (2014), Alzubaidi, Aldridge, and Khine (2014), Baghaei and Ravand (2015), Ghadirzadeh, Hashtroudi, and Shokri (2013), Guntzviller, Yale, and Jensen (2016), Swanson, Kudo, and Guzman-Orth (2016), Wang and Cheng (2016), Sohsah et al (2014), Chen and Adesope (2016), and Johnson, Leonardo, and Anthony (2012) Correlation mining Dörnyei and Chan (2013), Rouhani (2013), Guntzviller et al (2016), Alkharusi (2013), François and 3rd workshop on NLP for Computer-assisted Language Learning (2014), Vyatkina (2012), Vyatkina (2013), and Sharifi and Ahangary (2015) Causal data mining Hong et al (2014), Winke (2013), Gu and Cheung (2016), Yu (2013), Hong et al (2015), Kim and Kang (2014), Robson (2015), and Silverman et al (2015) Path mining Tragant et al (2013), Winke (2013), Gu and Cheung (2016), Kim and Kang (2014), Robson (2015), Silverman et al (2015), ...…”