Editing Objectivism (section)

==== Criticism on epistemology ====
The philosopher [[John Hospers]], who was influenced by Rand and shared her moral and political opinions, disagreed with her concerning issues of epistemology.<ref>{{harvnb|Branden|1987|p=323}}</ref>  Some philosophers, such as [[Tibor Machan]], have argued that the Objectivist epistemology is incomplete.<ref name="tiborneedwork">For example, {{harvnb|Machan|2000|pp=134–151}}</ref>

Psychology professor [[Robert L. Campbell]] writes that the relationship between Objectivist epistemology and cognitive science remains unclear because Rand made claims about human cognition and its development which belong to psychology, yet Rand also argued that philosophy is logically prior to psychology and in no way dependent on it.<ref name="itoephilpsych">{{harvnb|Rand|1990|p=289}}</ref><ref name="cogrev">{{cite journal |last=Campbell |first=R. L. |date=Fall 1999 |title=Ayn Rand and the Cognitive Revolution in Psychology |journal=Journal of Ayn Rand Studies |volume=1 |issue=1 |pages=107–134 |url=http://campber.people.clemson.edu/randcogrev.html}}</ref>

The philosophers [[Randall Dipert]] and {{ill|Roderick Long|ar|رودريك تي لونغ|arz|رودريك تى لونج|es|Roderick Long|ru|Лонг, Родерик Трейси|zh|罗德里克·T·朗}} have argued that Objectivist epistemology conflates the perceptual process by which judgments are formed with the way in which they are to be justified, thereby leaving it unclear how sensory data can validate judgments structured propositionally.<ref>{{cite journal |last=Dipert |first=Randall R. |author-link=Randall Dipert |date=Spring 1987 |title=Review Essay: David Kelley's ''Evidence of the Senses: A Realist Theory of Perception'' |journal=Reason Papers |issue=12 |pages=57–70 |url=http://www.reasonpapers.com/pdf/12/rp_12_7.pdf}}</ref><ref>{{cite book |title=Reason and Value: Rand versus Aristotle |last=Long |first=Roderick T. |location=Poughkeepsie, NY |publisher=The Objectivist Center |year=2000 |isbn=978-1-57724-045-7 |oclc=49875339 |series=Objectivist Studies Monographs}}</ref>