Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
One problem with which economic historians always contend, to which they usually give acknowledgment and with which they occasionally think they have dealt successfully, is that of the representativeness of their empirical answers. As Clapham said,Every economic historian should, however, have acquired what might be called the statistical sense, the habit of asking in relation to any institution, policy, group or movement the questions: how large? how long? how often? how representative?