supplementary receipt of the private device significantly increased the wife's savings in couples with a low level of spousal trust … more effective hiding of the wife's savings amounts, facilitated through the private saving device. From a policy …

experiment, these spouses randomly received either only a joint savings device (control) or, additionally, a device for … individual usage (treatment). Combining data from both experiments, we examine how the impact of the strategically usable savings … individual device reported significantly higher savings only when spouses' decisions in the trust game were aligned. When …