|Citation rank by Publication type. High rank indicates more citations. There is no significant difference between journal reviews and empirical papers, both of which have significantly higher citation rank than book chapters (p < .001)|
Things may be different for other disciplines, especially in humanities, where publication in books is much more common. But if you publish in a field where most publications are in journals, then I suspect the trend I see in my own work will apply to you too. Quite simply, if you write a chapter for an edited book, you might as well write the paper and then bury it in a hole in the ground.
Accessibility is the problem. However good your chapter is, if readers don't have access to the book, they won't find it. In the past, there was at least a faint hope that they may happen upon the book in a library, but these days, most of us don't bother with any articles that we can't download from the internet.
My own solution would be for editors of such collections to take matters into their own hands, bypass publishers altogether, and produce freely downloadable, web-based copy. But until that happens, my advice to any academic who is tempted to write a chapter for an edited collection is don't.
Eve Mardera, Helmut Kettenmann, & Sten Grillner (2010). Impacting our young Proceedings of the National Academy of Sciences, 107 DOI: 10.1073/pnas.1016516107