以下是這篇論文的摘要，請據此回答以下二題 (2, 3 題)
Abstract
Suggestions can cause some individuals to miss or disregard existing visual stimuli, but can
they infuse sensory input with nonexistent information? Although several prominent theories
of hypnotic suggestion propose that mental imagery can change our perceptual experience,
data to support this stance remain sparse. The present study addressed this lacuna, showing
how suggesting the presence of physically absent, yet critical, visual information transforms
an otherwise difficult task into an easy one. Here, we show how adult participants who are
highly susceptible to hypnotic suggestion successfully hallucinated visual occluders on top of
moving objects. Our findings support the idea that, at least in some people, suggestions can
add perceptual information to sensory input. This observation adds meaningful weight to
theoretical, clinical, and applied aspects of the brain and psychological sciences.
【題組】2. ，請你判斷，以下哪一個最可能是該研究的獨變項?
(A) mental imagery
(B) suggestion
(C) perceptual information
(D) psychological science