“…However, further study is needed. For one, to replicate Ross's own research design, Groh and Rotchschild estimate only the short‐run effects of oil wealth, though the variables may have a longer run relationship (Beckmann, Czudaj, & Arora, ; Zhang, Dufour, & Galbraith, ). For two, they do not account for the potential endogeneity of oil rents to exchange rates (Beckmann et al., ; Chen, Rogoff, & Rossi, ; Zhang et al., ).…”