Often entrepreneurs of different ages team up for a social impact, yet current entrepreneurship literature is evasive of how age diversity impacts social venture performance. Extant research provides us with contradictory arguments about the relationship between age diversity and firm performance, leaving us with more questions than answers. Thus, this work dives deeper into the cognitive realm of entrepreneurial team dynamics and offers a fresh perspective informed by affective neuroscience literature integrated with the upper echelons theory to provide empirical evidence of how age diversity in teams hurts social venture performance and discuss its boundary conditions.