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An infographic showing statistical analysis results with charts, graphs, and Korean text.

4.1.1 자료 수집 개요 「Choice Chronicle」 게임 활동 전과후로 동일한 설문지를 배부하였다. 설문 참여자는 사전 설문에 34명, 사후 설문에 23명 이였다. 이 중 닉네임이 정확하게 일치하여 같은 사람의 사전과 사후 점수를 짝지을 수 있었던 학생은 21명이었다. <표 1> 설문 참여자 수 구분 인원 사전 설문 참여자 34명 사후 설문 참여자 23명 사전-사후 짝짓기 성공(분석 대상) 21명 짝짓기 실패(닉네임 불일치, 분석 제외) 15명(사전 13명 + 사후 2명) 4.1.2 설문지가 믿을 만한지 확인하기 <표 2> 설문 신뢰도 (Cronbach's α, 1에 가까울수록 문항들이 같은 개념을 일관되게 측정한다는 뜻이다.) 영역 문항 수 사전(34명) 사후(23명) 공감 능력 8문항 0.895 0.925 방어자 자기효능감 5문항 0.888 0.953 방관자 행동의도 5문항 0.881 0.918 세 영역 모두 0.88 이상으로 매우 높아서, 이 설문지는 믿고 사용할 수 있는 도구임을 확인하였다. 4.1.3 게임 전후 점수는 어떻게 달라졌을까? <표 3> 게임 참여 전·후 평균 점수 비교 (짝지어진 21명 기준) 영역(만점) 사전 평균 사후 평균 늘어난 점수 공감 능력 (40점) 31.05점 31.38점 +0.33점 방어자 자기효능감 (25점) 18.67점 19.05점 +0.38점 방관자 행동의도 (25점) 20.38점 20.90점 +0.52점 총점 (90점) 70.10점 71.33점 +1.24점 세 영역 모두 평균 점수가 소폭 상승했다. 「Choice Chronicle」참여 전후 하위영역별 평균 점수 비교 공감 능력 (8문항, 40점): 사전 31.05 / 사후 31.38 방어자 자기효능감 (5문항, 25점): 사전 18.67 / 사후 19.05 방관자 행동의도 (5문항, 25점): 사전 20.38 / 사후 20.90 4.1.4 정말로 의미 있는 변화일까? <표 4> 대응표본 t검정 결과 (21명) 영역 t값 p값 통계적으로 의미 있는 변화인가? 공감 능력 0.35 0.728 아니오 방어자 자기효능감 0.67 0.512 아니오 방관자 행동의도 1.37 0.185 아니오 총점 0.85 0.404 아니오 p값이 모두 0.05보다 훨씬 크기 때문에, 이번에는 어떤 영역에서도 "통계적으로 확실히 증명됐다"고 말할 수는 없다. 그래서 결과를 다시 확인하는 방법(비모수 검정인 윌콕슨 부호순위검정)으로도 확인해 보았다. <표 5> 윌콕슨 부호순위검정 (재확인) 검정 방법 결과 대응표본 t검정 t=0.85, p=0.404 윌콕슨 부호순위검정 W=67.5, p=0.432 두 가지 방법 모두 "통계적으로 유의미하지 않다"는 같은 결론을 보여주어서, 이번 결과가 계산 방법에 따라 달라지는 것이 아니라는 점을 확인하였다. <표 6> 효과크기 (Cohen's d — 통계 검정과 별개로 "실제 변화의 크기"를 보여주는 지표. 0.2=작음, 0.5=중간, 0.8=큼) 영역 d값 해석 공감 능력 0.08 거의 없음 방어자 자기효능감 0.15 매우 작음 Voir plus

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