TABLE 1.

Questionnaire for Assessing the Rubber Hand Illusion in the Classic-RHI Paradigm and the Parasagittal-Mirror-RHI Paradigm: Three Illusion Statements (S1–S3) and Six Control Statements (S4–S9).

Statement #	Illusion versus Control Statements	Statements
S1	Ownership	I felt as if the rubber hand were my hand
S2	Causation	It seemed as though the touch I felt was caused by the paintbrush touching the rubber hand
S3	Visual Capture of Touch	It seemed as if I were feeling the touch of the paintbrush in the location where I saw the rubber hand touched
S4	Control	It felt as if my (real) hand were drifting towards the right (towards the rubber hand)
S5	Control	It seemed as if I might have more than one left hand or arm
S6	Control	It seemed as if the touch I was feeling came from somewhere between my own hand and the rubber hand
S7	Control	It felt as if my (real) hand were turning “rubbery”
S8	Control	It appeared (visually) as if the rubber hand were drifting towards the left (towards my hand)
S9	Control	The rubber hand began to resemble my own (real) hand, in terms of shape, skin tone, freckles or some other visual feature

Nine statements (three illusion statements and six control statements) were presented in randomized order at the end of each trial. Participants responded on a visual analog scale, with indicative marks at only the two end points of the scale: 0 “Not at all” and 6 “Very strongly agree”. Participants used a slider on a digital touch-screen tablet, with 0 and 6 serving to provide the participant with reference points when selecting the point along the line that best indicated their rating of the RHI. In Experiment 1, participants used a Samsung Galaxy 10 inch Tablet with a stylus, and in Experiment 2, participants used an 8 inch iPad Tablet and their finger.