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5 신진희, "자유놀이를 통한 정신지체아의 반복행동과 퇴행행동 특성 분석" 대구대학교 교육대학원 2002
6 정용석, "자기조정 훈련이 학습장애아의 과제 관련 언어, 과제 지속시간, 및 문제행동에 미치는 효과" 대구대학교대학원 1996
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8 강병은, "또래아동과의 협동놀이가 정신지체아의 사회생활 능력에 미치는 효과" 우석대학교 교육대학원 1999
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