Figure 2

Ideology predicts cooperation, trust, and descriptive expectations. Cooperation on the equal and unequal public goods by leftists and rightists (A). Left- and right-leaning participants’ trust, measured as expectations of others’ contributions to the equal and unequal public good (B). Ideology predicts descriptive expectations about cooperation on the respective public goods (C). Specifically, left-leaning individuals expect others to contribute more to the equal than to the unequal public good, while right-leaning ones expect others not to differentiate between the two public goods.