My first two JARS articles

My first two articles published in The Journal of Ayn Rand Studies can be read online free at JSTOR.org. Reading them requires being registered there, but registration is free. Reading newer articles requires payment somehow, but these articles are old enough to be read for free. (This is based on my personal experience. Somebody else's might differ.) 

Both articles are about epistemology, more specifically the nature of concepts.

Omissions and Measurement (2006)    https://www.jstor.org/stable/41560320
The Sim-Dif Model and Comparison (2011)   https://www.jstor.org/stable/41560412