<p><p><br></p><p><strong style="font-family: " 맑은="" 고딕";"=""><span style="font-family: " 맑은="" 고딕";"="">ARTICLES</span></strong></p><p><strong style="font-family: " 맑은="" 고딕";"=""><br style="font-family: " 맑은="" 고딕";"=""><span style="font-family: " 맑은="" 고딕";"="">Ham, Youngran · Park, Bunhee</span><br style="font-family: " 맑은="" 고딕";"=""></strong><span style="font-family: " 맑은="" 고딕";"="">A longitudinal analysis of the causal relationship between adolescents' happiness, </span><span style="font-family: " 맑은="" 고딕";"="">cooperation, and academic achievement</span></p><p><span style="font-family: " 맑은="" 고딕";"="">: A multigroup analysis across genders</span></p><p><br style="font-family: " 맑은="" 고딕";"=""><b style="font-family: " 맑은="" 고딕";"=""><span style="font-family: " 맑은="" 고딕";"="">Ji, Yeonjeong · Moon, Myunghyun · Park, Jiho · Kim, Byoungjoo</span></b><br style="font-family: " 맑은="" 고딕";"=""><span style="font-family: " 맑은="" 고딕";"="">A Survey Study on the Actual State of and Prevention Measures for the Improvement </span><span style="font-family: " 맑은="" 고딕";"="">of School Violence among College Students</span></p><p><br></p></p>