Goldman has described his "naturalistic" approach to epistemology as splitting "epistemology (individual epistemology, anyway) into two parts... The first part is dedicated to the 'analytic' task of identifying the criteria, or satisfaction conditions, for various normative epistemic statuses. With respect to the normative status of justifiedness (of belief), the proposed criterion is the reliability of the belief-forming processes by which the belief is produced. Defense of this criterion of justifiedness was not based on scientific psychology, but rather a familiar form of armchair methodology. The second part is the task where science enters the picture. Psychological science is required to identify the kinds of operations or computations available to the human cognizer, how well they work when operating on certain inputs and under certain conditions."