In this study we looked at whether prior study of a lecture topic enhanced performance on the lecture subtests of a content-based listening test. We postulated that listening proficiency level would affect whether prior knowledge could be accessed and used: we hypothesized that listeners would need a high proficiency level to be able to use their prior knowledge. To examine these issues, we analyzed the data from 11 lecture subtests from the Test of Listening for Academic Purposes (T-LAP). We used a two-step multiple regression analysis to determine 1) if level of listening proficiency affects whether prior knowledge can be accessed and 2) if prior knowledge is a significant factor in performance on lecture subtests. Our findings did not support the hypothesis that high proficiency listeners who have indicated prior study of a topic will perform better on lecture comprehension than listening skills alone would predict. Although prior knowledge was a significant main effect for five of the 11 lectures, the effect size was trivial. However, the effect is more likely to be present in technical lectures than it is in non-technical lectures. These results indicate that we need to look at what features differentiate technical from non-technical lectures. Lecture discourse features, delivery style, and listening tasks promise to be fruitful areas for future research.As our understanding of what it means to know a language increases in depth and complexity, so does our understanding of what a language proficiency test should address. Traditionally, language proficiency has been thought of as control of such linguistic knowledge as phonemes, vocabulary and grammatical structures, and the tests that were created to assess control of such knowledge areas consisted of discrete items with sentence length stimuli. However, the definition of knowing a language has expanded well beyond control of linguistic knowledge to include control of pragmatic knowledge, organizational knowledge and strategic competence (Canale and Swain, 1980;Canale, 1983;Bachman, 1991) triggering a change in the focus of language testing to a more direct testing format. Tests have begun to feature materials and tasks that more closely simulate what the test-taker will actually be doing in a language-use situation. This contrasts with indirect methods of evaluating language proficiency in which discrete items covering a at Northeastern University on February 19, 2015 ltj.sagepub.com Downloaded from 100 very restricted area of linguistic knowledge are used to predict language performance. As test design incorporates more extended discourse and content-based stimuli, test makers are confronted with a myriad of issues predicated upon such designs. In this study we will examine one such area of concern, the effect of prior knowledge of a topic on test performance.Will a person who has had previous exposure to a topic perform better than would be expected if that person did not have that exposure? In general, theories of cognition based on first language experi...