[Air-l] relation digital divide - knowledge gap

[Opgenhaffen Michaël]

I'm doing research within the area of the digital divide. I was wondering if the causal relation between the digital divide and the knowledge gap is examined. Most of the time, these two concepts are described in relation to each other (digital divide leads to knowledge gap), but i didn't find a study that really describes the relation between these two concepts. 

Anyone that can help me out? 

Michaël