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视觉支持被认为是有助于听力理解的又一手段。Ginther ( 2002 )调查了两种视觉支持对计算机化托福听力成绩的影响,一种是有关背景知识的视觉支持,如言语事件的场景,这为听者接受言语事件做好准备。另一种是有关内容的视觉支持。研究的结果表明有关内容的视觉支持略微提高了微型对话的理解,而有关背景的视觉支持则降低了理解。
研究者给出的解释是与相关信息没有直接联系的事先准备,如情景视觉支持,对听者没有帮助。这些视觉信号本身也需要处理,因此耗费了听者的注意力资源,使听者的长时记忆作用受到限制。这一研究结果得到其他研究者的支持,如Herron (1998)等。Long( 1990)早就证明了图式活动与听