Dr David Weiskopf is an executive vice president at Compass Lexecon and a member of the faculty at Johns Hopkins University. Dr Weiskopf specialises in industrial organisation, microeconomic analysis, consumer behaviour, applied econometrics and statistics, and labour economics. He has testified as an expert witness in private litigation regarding antitrust issues, economic damages and consumer behaviour. He has also published articles on merger simulation, demand estimation, market definition for intermediate goods and consumer complaint rates. He has presented theoretical and empirical papers at academic conferences, and has co-authored numerous economic studies that have been presented to antitrust enforcement agencies around the world.