Unit four is the research itself , which systematically analyzes the correcting methods . unit five presents the result of the research , it is to deal with the data and information collected and to see the problems being reflected 第四章為實(shí)驗(yàn)、調(diào)查研究,就矯治策略作系統(tǒng)的分析,并就有關(guān)資料、數(shù)據(jù)作系統(tǒng)整理、分析,巨映問題。