The Art Self-Concept Inventory (ASCI) was developed as a situation specific self-concept instrument to measure the students' ideas and feelings about themselves in the art context. Art self-concept was defined as students' perceptions of themselves as makers, as judges, and as enjoyers of art. To top these dimensions of art self-concept, items were generated for three corresponding subscales: art making, art judgment, and art enjoyment. Following a pilot study, the final form of the ASCI was administered to 208 grade 6 students. Item-total correlations were acceptable to high: Delta group response patterns showed strong upper left to lower right diagonality, and item means were near scale mid-point. Reliability estimates for the scale were very high. The instrument appears to possess both content and construct validity in that the items in the scale sample a range of art experiences and the instrument shows unidimensionality. In addition, it appears that all items over the three domains consistently differentiate between subjects who hold high self-concepts in the area of art and those who do not. (The 49-item instrument is included.) (PN)