Surveys of trusting attitudes are found to correlate with growth and development outcomes. The question of why trust attitudes correlate with economic growth remains open however. I argue that trust surveys capture facets of social capital not previously investigated, namely, coordination. Hence a complete investigation of the relationship between trust attitudes in growth must encompass their predictive power in a coordination game. This study shows that affirmative responses to surveys of trust attitudes correlate with and predict efficiency-supporting behavior in a Stag Hunt game.