Abstract
This study argues that the structural, relational, and cognitive dimensions of social capital in organisational knowledge sharing. These dimensions increase knowledge sharing; attitude and expectations about knowledge sharing, and quality of knowledge sharing. Our proposed model is tested on a sample of 141 employees and researchers within knowledge stations at Jordan, and then examined their relationships using structural equation modelling. We find that social interaction ties, trust, norm of reciprocity and attitude and expectations about knowledge sharing significantly contributed to knowledge sharing quality-directly and indirectly- but only shared language and vision was insignificant contributed to quality of knowledge sharing.