For a long time, it leaned toward the synchronic analysis of folklore structure that viewed the dichotomy of 'hare and ke' as an axiom, and there was an exclusive interest in the definition of 'hare' referring to non-ordinary events, which were rituals and festivals.
長らく「ハレとケ」の二項図式を公理のようにみなした民俗構造の共時的な分析に傾斜し、もっぱら＜「ハレ」の非日常＝儀礼や祭り＞に対して関心が寄せられていた。