Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
I. Introduction, 555. — II. Choice of social and political variables, 557. III. Definition of variables and method of classification, 558. — IV. The factor analysis: results and interpretation, 561. — V. Regional differences in the interrelationship between per capita GNP and social and political influences, 569. — VI. Summary and conclusion, 576.