Intelligent tutoring systems and learning outcomes: A meta-analysis. Ma W, Adesope OO, Nesbit JC, Liu Q. W Ma, OO Adesope, JC Nesbit, Q Liu - Journal of educational …, 2014 - psycnet.apa.org GSID: iH3a-sM2OUQJ
The relative effectiveness of human tutoring, intelligent tutoring systems, and other tutoring systems. [No authors listed] GSID: ttBaV8ymbj4J