In an extension of Muter's (l978l research, subjects studied pairs of lowercase cues and uppercase targets consisting of famous names (e.g., betsy ROSS), nonfamous names (e.g., edwin CONWAY), weakly related words (e.g., grasp BABY), and unrelated words (e.g., art GO). Following recognition tests in which surname and word targets were tested in the absence of their cues, cued recall tests for the surname and word targets were given. In semantic recognition and recall tests, the response to a surname was to be made solely on the basis of its fame, regardless of whether or not it had appeared in the study list. In episodic memory tests, the response to a surname was to be made solely on the basis of whether or not it had appeared in the study list, regardless of its fame. In all tests, the response to a nonname was to be made solely on the basis of whether or not it had appeared in the study list. The Tulving-Wiseman (1975) function accurately predicted recognition failure rates for famous surnames, whether or not they were from the study list and whether the test was episodic or semantic, and for targets from the weakly related word pairs. However, recognition failure rates were lower than the Tulving-Wiseman function predicted for nonfamous surnames in the episodic memory test and for targets from unrelated word pairs. Discussion focused on these results' implications for the nature of the Tulving-Wiseman function and the psychological reality of the episodic-semantic memory distinction.According to Tulving (1972), episodic memory tasks require subjects to answer queries about when, where, or under what circumstances they experienced an event, whereas semantic memory tasks require them to answer queries about organized knowledge concerning word meanings and the relations among concepts, independent of the autobiographical context in which that knowledge was gained. Although most researchers accept Tulving's episodic-semantic distinction as a useful taxonomy for classifying different kinds of memory tasks, considerable disagreement centers on whether episodic and semantic memory tasks tap functionally different memory stores and/or retrieval processes (e.g