2 (synchronous vs. asynchronous)*2 (white hand vs. black hand)*2 (pain vs. touch)
vibrotactile stimulation 120s; proprioceptive drift; syringe on rubber hand; within-subject design (white hand block and black hand block, in random order)
Rating: rubber hand was my hand in synchronous conditions, and the White is hand is more significant than the black hand.
SCR: SCR increased for white-synchronous hand compared to other conditions.
IAT: post-IAT = rating (White/Black); the stronger the sense of body-ownership participants experienced over the rubber hands the lower their post-testing racial bias; the experience of ownership over either the white or the black rubber hand were not individually significant predictors.
Experiment 2
We included an additional control condition at which participants received tactile stimulation on their own unseen hand, synchronous with that observed on the rubber hand, but the rubber hand was viewed from a third-person perspective.
Method
3 (1pp synchronous vs. 1pp asynchronous vs. 3pp synchronous)*2 (White vs. Black)
pre-SCR; SCR; Rating; no IAT
Result
Rating: same as Exp1
SCR: Time*stimulation. Significant increases in the post- compared to pre-stimulation SCRs following synchronous 1PP VT stimulation on both White and Black hands.
Rubber hand illusion reduces racial bias, but there was no specific difference between the White and the Black hand because this study choose the within-subject design.
2013 Maister
Experiment 1
Method
pre_IAT; VT-Black hand priming; post-IAT; Rating;
post-IAT - pre-IAT = Ownership + Synchronicity + interaction in Black hand
Result
Ownership positively predicted IAT-change with higher ownership associated with IAT scores becoming more positive towards individuals with dark skin.
Experiment 2
Method
pre_IAT; VT-Black/White hand priming (Between-subject factor); post-IAT; Rating;
post-IAT - pre-IAT = Ownership + Synchronicity + Hand Color + interaction
Result
Ownership * Hand colour significiant
The more intense the experienced ownership over the dark-skinned rubber hand, the more positive implicit attitudes towards dark skin became.
This study investigates that implict racial bias is influenced by the Ownership of rubber hand.
