Table 1. Rubber hand illusion questionnaire.

Number	Question
1	It seemed as if I felt the touch of the paintbrush in the location where I saw the rubber hand touched.
2	It seemed as though the touch I felt was caused by the paintbrush touching the rubber hand.
3	I felt as if the rubber hand were my hand.
4	It felt as if my (real) hand was drifting towards the right (towards the rubber hand).
5	It seemed as if I might have more than one left hand or arm.
6	It seemed as if the touch I was feeling came from somewhere between my own hand and the rubber hand.
7	It felt as if my (real) hand was turning “rubbery”.
8	It appeared (visually) as if the rubber hand was drifting towards the left (towards my hand).
9	The rubber hand began to resemble my own (real) hand, in terms of shape, skin tone, freckles or other visual features.

The rubber hand illusion questionnaire initially used in Botvinick & Cohen (1998). We translated this into Japanese.