Learning to create aural discrimination categories based on spectral cues is not only important for comprehension, but it is also likely to play a role in production. Researchers have found that practice in perception can affect and improve production (Bradlow, 1997; Rochet, 1995; Rvachew, 1994). Thus, instruction must help students listen for and produce the articulatory differences of vowels and lead them away from a reliance on vowel length. One way of achieving this goal is through the use of listening exercises that utilize minimal pairs. Celce-Murcia, Brinton, and Goodwin state, “Since vowels are often more easily distinguished in relation to one another than by any external standard of measurement, the perception of contrasts is an essential starting point in the teaching of vowels” (2010, p. 138). These vowel discrimination exercises will help students learn to listen for the subtle differences among the vowels and will help students shift from utilizing length as the main cue.