A well-worn French proverb pronounces ‘tout comprendre c’est tout pardonner’ (‘to understand all is to forgive all’). Is forgiveness the inevitable consequence of social scientific understanding of the actions and lives of perpetrators of serious wrongdoing? Do social scientific explanations provide excuses or justifications for the perpetrators of the actions that the explanations purport to explain? In this essay, I seek clarification of these intertwined explanatory and moral questions.

Doris, in his 2002 book Lack of Character and 2005 paper ‘Replies: evidence and sensibility’, famously argues that we lack the kinds of global character traits posited by theories of virtue, because the situationist experiments demonstrate that people do not display trait-relevant behaviour in trait-relevant situations above chance. This paper argues that some notable situationist experiments are not trait-relevant situations. By analysing which factors improve or reduce participants’ chances of success (e.g. stress, lack of familiarity, ambiguity), and observing that these (...) factors decrease agents’ capacity to recognize and respond to a variety of reasons in a variety of settings, the best explanation of many subjects’ failure to do the right thing is that they are affected by factors that are capacity-compromising. This matters, because settings in which agents have a reduced capacity to avoid wrongdoing are typically not apt tests of an agent’s character traits. (shrink)

The situationist experiments demonstrate that most people's behaviour is influenced by environmental factors much more than we expect, and that ordinary people can be led to behave very immorally. A number of philosophers have investigated whether these experiments demonstrate that subjects' responsibility-relevant capacities are impeded. This paper considers how, in practice, we can assess when agents have a reduced capacity to avoid wrongdoing. It critiques some previously offered strategies including appeals to the reasonable person standard, appeals to counterfactuals and understandability (...) of behaviour, and appeals to base rates of wrongdoing. It then proposes we should think a certain factor impeded capacities when this is the best explanation of a change in patterns of responses. With this approach in hand, I then argue that subjects in many of the situationist experiments are (mostly) excused for their actions. (shrink)