Learners with a medium level of prior knowledge and with high levels of prior knowledge have more supportive from directive help and non-directive help than learners with low level of prior knowledge.

定向和非定向帮助对不同水平先前知识学习者有不同的效果，中、高先前知识学习者从这两种帮助中获得的支持要高于低先前知识学习者。

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Learners with a medium level of prior knowledge and with high levels of prior knowledge have more supportive from directive help and non-directive help than learners with low level of prior knowledge.

定向和非定向帮助对不同水平先前知识学习者有不同的效果，中、高先前知识学习者从这两种帮助中获得的支持要高于低先前知识学习者。

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