In the experimental psychology of attention, the phenomenon of attentional context has been underappreciated, while focal attention has taken center stage. Similar problems of context are found in certain realist arguments in .the philosophy of science. Through the lens of Aron Gurwitsch's phenomenology of attention, this paper discusses and evaluates the ways in which context is or is not brought into focus in experimental psychology and the philosophy of science. It concludes that recent developments in both realms show promise. Also some ways are indicated in which phenomenology, experimental psychology, and philosophy of science can benefit from each other.