Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This article analyzes a large quantity of new data documenting the actual characteristics and behavior of early reaper adopters. It shows that a surprisingly large number of small-scale farmers were among the early purchasers and that institutional evolution—the emergence of local markets and cooperative exchanges for reaper services—encouraged rapid diffusion. These findings call into question the standard interpretation of northern farms as self-contained production units and, more specifically, challenge the usefulness of both the farm-specific-threshold model and the family-labor-constraint model.