One might assume that the desire to help (here described as Want) is the essential driver of helping declarations and/or behaviors. However, even if desire to help (Want) is low, intention to help may still occur if the expectancy regarding the perceived effectiveness of helping is high. We tested these predictions in a set of three experimental studies. In all three, we measured the desire to help (Want) and the Expectancy that the aid would be impactful for the victim; in addition, we manipulated Expectancy in Study 3. In Studies 1 and 3, we measured the participants’ declaration to help while in Study 2, their helping behavior was examined. In all three studies, we used variations of the same story about a victim. The results supported our hypothesis. Thus, the studies help to tease apart the determinants of helping under conditions of lowered desire to do so, an issue of great importance in public policymaking.

中文翻译：

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在欲望低下时提供帮助：期望作为助推器。

人们可能会假设帮助的愿望（这里描述为想要）是帮助声明和/或行为的基本驱动力。然而，即使帮助的愿望（Want）很低，如果对帮助的感知效果的期望很高，帮助意图仍然可能发生。我们在一组三项实验研究中测试了这些预测。在这三个方面，我们衡量了帮助的愿望（Want）和援助对受害者产生影响的期望；此外，我们操纵了期望值在研究 3 中。在研究 1 和 3 中，我们测量了参与者的帮助声明，而在研究 2 中，检查了他们的帮助行为。在所有三项研究中，我们都使用了关于受害者的同一故事的变体。结果支持了我们的假设。因此，这些研究有助于梳理在意愿降低的情况下提供帮助的决定因素，这是公共政策制定中非常重要的一个问题。