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Table 2 Summary of the Gini index ( G ) and top-1% share ( f 1 % )

From: Inequality and cumulative advantage in science careers: a case study of high-impact journals

Journal setj

Cohort entry years

G( C ˜ )

f 1 % ( C ˜ )

G( N p )

f 1 % ( N p )

Economics

1970-1995

0.80

0.23

0.54

0.09

1970-1980

0.83

0.26

0.56

0.10

1980-1990

0.79

0.21

0.55

0.09

1990-1995

0.74

0.19

0.47

0.07

Nat./PNAS/Sci.

1970-1995

0.69

0.18

0.46

0.10

1970-1980

0.74

0.22

0.53

0.12

1980-1990

0.67

0.15

0.45

0.08

1990-1995

0.63

0.12

0.35

0.06

  1. Inequality measures are calculated from the distribution of citation impact, P( C ˜ ), and from the distribution of productivity, P( N p ), for the cohorts of scientists whose first publication occurred in the indicated time intervals.