We analyze the relation between time preferences, study e¤ort, and academic performance among …rst-year business and economics students. Time preferences are measured by stated preferences for an immediate payment over larger delayed payments. Data on study e¤orts are derived from an electronic learning environment, which records the amount of time students are logged in, the number of exercises generated, and the fraction of topics completed. Another measure of study e¤ort is participation in an online summer course. We …nd no statistically signi…cant relationship between impatience and study e¤ort. However, we …nd that impatient students obtain lower grades and fail …nal exams more often, suggesting that impatient students are of lower unmeasured ability. Impatient students do not earn signi…cantly fewer study credits, nor are they more likely to drop out as a result of earning fewer study credits than required.JEL-Codes: D03, D90, I21