This study examines the reliability and comparability of various objective and subjective measures of performance in international joint ventures (IJVs). The authors test several hypotheses regarding the correlation between these measures and evaluate different data collection approaches. They find that objective measures, such as survival, duration, and stability, are positively correlated with subjective measures of IJV performance, particularly in terms of overall satisfaction and general dimensions of performance. The study also supports the use of multiple respondents, including parents and the IJV General Manager (IJVGM), for more reliable data collection. Additionally, cultural similarity among parents is found to enhance the correlation between assessments of IJV performance. The findings suggest that objective measures can be useful surrogates for subjective ones, especially for survival and duration, but caution is advised regarding the stability measure. The study provides valuable insights into the reliability of performance measures and the utility of different data collection methods in IJV research.This study examines the reliability and comparability of various objective and subjective measures of performance in international joint ventures (IJVs). The authors test several hypotheses regarding the correlation between these measures and evaluate different data collection approaches. They find that objective measures, such as survival, duration, and stability, are positively correlated with subjective measures of IJV performance, particularly in terms of overall satisfaction and general dimensions of performance. The study also supports the use of multiple respondents, including parents and the IJV General Manager (IJVGM), for more reliable data collection. Additionally, cultural similarity among parents is found to enhance the correlation between assessments of IJV performance. The findings suggest that objective measures can be useful surrogates for subjective ones, especially for survival and duration, but caution is advised regarding the stability measure. The study provides valuable insights into the reliability of performance measures and the utility of different data collection methods in IJV research.