統合失調症患者のぬりえ課題における色の塗り方の特徴

Features of color painting of patients with schizophrenia

要旨：統合失調症患者57名と健常者30名を対象として，ぬりえ課題を用いて線画の呼称と塗った色の分析を行った．線画の呼称を正答し，かつ線画に対応した色を塗ることができた者が共に8割以上であった線画は，健常者群では12項目全てであったが，統合失調症群ではバナナとミカンの2項目であった．四つ葉のクローバーとピアノは，統合失調症群で判別できた者は健常者群よりも有意に少なかった．残りの8項目は，線画を正しく呼称していたにも関わらず対応した色を塗ることができない者が多かった．統合失調症群のぬりえの特徴は，線画を認知できるが健常者が選んだ色とは異なる色を塗る者が多いことであった．

　We investigated the features of color painting of patients with schizophrenia. The presents study included 57 patients with schizophrenia (32 outpatients and 25 inpatients) and 30 controls. The patients were shown twelve colorless line-drawn pictures of objects: a statue, post, face, banana, clover, tangerine, eggplant, snow man, piano, peach, chestnut and the Earth. The subjects were required to say the names of the objects and their corresponding colors. More than 80% of the schizophrenic subjects could identify two objects and their corresponding colors (banana and tangerine), while the control group could identify 12. In patients with schizophrenia, the number of subjects who could identify the clover and piano was less than the control. Both the experimental group and the control group identified eight items: a statue, post, face, eggplant, snowman, peach, chestnut, and the Earth, but the groups differed in their color identification.

　The results suggest that the feature of color identification of patients with schizophrenia tends be different from that of healthy individuals.