Table 2.

Questionnaire items for measuring subjective aspects of the computer graphics (CG) hand in experiment 2.

Category	Questionnaire items
Ownership	I felt that the CG hand was my hand
	The felt position of the real hand was located on the CG hand
	I felt as if I was looking at my own hand
	I felt as if the CG hand was part of my body
Ownership control	The real hand was drifting toward the CG hand
	The real hand was turning into a computer graphics
	It seemed that I had more than one right hand
	I felt as if my right hand had disappeared
Agency	The CG hand moved as if it was obeying my will
	I felt as if I was controlling the movements of the CG hand
	I felt as if I was causing the CG hand movement I saw
	I expected the CG hand to move whenever I moved my hand
Agency control	I felt as if the CG hand was controlling my will
	I could sense the movement from somewhere between my real hand and the CG hand
	It seemed as if the CG hand had a will of its own
	It seemed as if the CG hand was controlling my movements

Participants rated their level of agreement with each item on a 7-point scale, ranging from -3 (strongly disagree) to + 3 (strongly agree).