Behavioural science is unlikely to change the world without a heterogeneity revolution | Nature Human Behaviour

Behavioural science increasingly informs policy, but findings are not always replicated. Bryan et al. describe an emerging heterogeneity revolution. They recommend that researchers use heterogeneity in treatment effects to develop more robust theories of causality and strengthen the field.

Subjects Human behaviour Policy Research management Science, technology and society Abstract In the past decade, behavioural science has gained influence in policymaking but suffered a crisis of confidence in the replicability of its findings. Here, we describe a nascent heterogeneity revolution that we believe these twin historical trends have triggered. This revolution will be defined by the recognition that most treatment effects are heterogeneous, so the variation in effect estimates across studies that defines the replication crisis is to be expected as long as heterogeneous effects are s

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