sentence: Gaw ę da , Woodward , Moritz , and Kokoszka ( 2013 ) found that patients with a diagnosis of schizophrenia who hallucinated showed a bias towards responding that imagined actions were actually performed , indicating that response biases may not be specific to voices , or , indeed , auditory stimuli.Future research should therefore attempt to establish the precise relationship between reality monitoring ( distinguishing between internally and externally generated perceptions ) and the auditory signal detection task used here , as well as the specificity of the effect to auditory verbal material .