성격검사문항에 대한 이상점 반응 모형의 적용 = Application of ideal point response model to personality scale

다국어 초록 (Multilingual Abstract)

The present study examined whether ideal point response model is adequate for personality measurement scales by comparing the fits and predictive validities of ideal point response model and dominance response model. The analysis of data on a conscientiousness scale developed based on International Personality Item Pool showed that some of the items have bell-shape option response plot, which supports ideal point response model. However, both ideal point response and dominance response model fit the data similarly well. Predictive validity coefficients of conscientiousness scores based on each item response process model predicting academic achievement-related criteria were also similar to each other. The implications of the results were discussed in terms of development and scoring personality scales and the usage of personality scale scores.

국문 초록 (Abstract)

본 연구는 문항반응과정에 대한 이상점 반응(ideal point response) 모형과 우세과정(dominance process) 모형을 5점 척도로 측정된 성실성 척도에 적용해 봄으로써 다양한 성격 측정 도구들의 문항개발과 채점방식이 암묵적으로 가정하고 있는 문항반응과정에 대한 근본적인 가정을 검증하고자 하였다. 국제 성격문항집(International Personality Item Pool)의 문항들을 기초로 본 연구에서 개발한 성실성 척도에 대한 응답 자료를 문항반응이론 방법으로 분석한 결과, 대체로 모든 문항에서 우세과정 모형과 이상점 반응 모형의 모형적합도가 유사하게 좋게 나타났지만, 우세과정 모형보다는 이상점 반응모형을 지지하는 옵션반응곡선을 나타내는 문항들도 관찰되었다. 또한 이상점 과정 모형과 우세 과정 모형을 각각 채점에 적용하여 산출된 점수와 학업성취관련 준거변인들과의 상관관계의 정도를 비교한 결과 두 모형에서 계산된 성실성 점수가 거의 유사한 수준의 예측타당도를 보였다. 이러한 결과가 성격 문항의 개발과 채점, 그리고 성격점수의 이용 목적과 관련하여 어떠한 함의를 가지는 지 논의하였다.

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