This dissertation tests the psychological reality of two philosophically developed worldview schemas, called mechanism and organicism, via a selective recall paradigm. It was hypothesized that portions of text that coincide with a person's preferred worldview will be selectively recalled at a greater rate than portions of text that do not reflect this preferred worldview. Furthermore, this bias in recall was hypothesized to occur with some degree of predictability across texts about different knowledge domains. Participants were asked to complete a psychological instrument which measured preference for mechanism and organicism. Next, they read two texts about the French Revolution and quantum mechanics containing items of text that varied across the mechanist and organicist worldviews. Then they wrote down what they could recall from the texts. Evidence that consisted of significant interactions between participants' worldview preferences and the types of items that they recall from the text was found and was interpreted as support for the hypothesis that worldviews are psychologically real high-level schemas. These results suggest the psychological reality of Pepper's mechanism and organicism worldviews. The implications surrounding these findings are also discussed.