In this study, we examine the effects of own and peer adoption of improved soybean variety on household yields and food and nutrient consumption, using observational data from Ghana. We employ the marginal treatment effect approach to account for treatment effect heterogeneity across households and a number of identification strategies to capture social network effects. Our empirical results show that households with higher unobserved gains are more likely to adopt because of their worse outcomes when not adopting. We also find strong peer adoption effect on own yield, only when the household is also adopting, and on food and nutrient consumption when not adopting. However, the peer adoption effect on consumption attenuates when the household adopts the improved variety. Furthermore, our findings reveal that adoption tends to equalise households in terms of observed and unobserved gains on consumption and can thus serve as a mechanism for promoting food security and nutrition in this area.

中文翻译：

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社交网络、采用​​改良品种和家庭福利：来自加纳的证据

在这项研究中，我们使用来自加纳的观察数据，研究了自己和同行采用改良大豆品种对家庭产量以及食物和营养消耗的影响。我们采用边际治疗效应方法来解释家庭间治疗效应的异质性，并采用一些识别策略来捕捉社会网络效应。我们的实证结果表明，具有较高未观察到的收益的家庭更有可能采用，因为他们在不采用时结果更差。我们还发现，只有当家庭也收养时，同伴收养对自己的产量有很强的影响，而在不收养的情况下，对食物和营养消耗也有影响。然而，当家庭采用改良品种时，同伴采用对消费的影响减弱。此外，