한국어 심성어휘집 연구를 위한 어휘판단 데이터베이스
The Korean Lexicon Project: A Lexical Decision Study on 30,930 Korean Words and Nonwords
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초록
한국어 심성어휘집의 구조와 검색 과정을 연구하기 위해 한국어 단어 30,930개와 비단어 30,930개에 대한 어휘판단시간을 수집하였다. 참가자는 52명이었고 각 참가자는 61,860개의 자극에 전부 반응하였다. 자극은 단일 단어 방식으로 제시되었으며, 참가자는 화면 중앙에 제시되는 자극이 단어인지 비단어인지 판단하였다. 수집된 데이터베이스의 신뢰성을 검증하기 위해 빈도, 연습, 품사, 길이 등의 영향을 분석하고 가상실험(virtual experiment)을 실시하였다. 두 개의 가상실험 결과는 실제실험 결과와 상당히 일치하였다. 결과를 바탕으로 한국어 심성어휘집 연구에서 메가스터디(megastudy)의 이용에 대해 논의하였다.
Abstract
Fifty-two Korean students were recruited for the first Korean megastudy to construct a database of lexical decision times on 30,930 Korean words and nonwords. The stimuli were 1-5 syllable in length and included nouns, verbs, adjectives, and adverbs. Participants were asked to decide if a stimulus on the screen was a word or a nonword. Each participant responded to a total of 30,930 words and 30,930 nonwords. The analysis of the lexical decision data obtained showed significant effects of frequency and length. Response times were also affected by POS, supporting the proposal to take into account of POS in the study of the mental lexicon. Practice effect was strong only in early blocks, and some signs of fatigue were apparent at later blocks. Two virtual experiments replicated the results of actual experiments, showing that the database was reliable. Based on the results, the use of megastudy in the understanding of the Korean mental lexicon was proposed.
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