Is learner self-assessment reliable and valid in a Web-based portfolio environment for high school students?

Chang, C.-C.C.-C.ChangChaoyun LiangChen, Y.-H.Y.-H.Chen2018-09-102018-09-102013http://www.scopus.com/inward/record.url?eid=2-s2.0-84866563068&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/380380[SDGs]SDG4Is learner self-assessment reliable and valid in a Web-based portfolio environment for high school students?journal article10.1016/j.compedu.2012.05.012