rice: Rice Index

In politicsR: Calculating Political System Metrics

Rice Index

Description

'rice' proposed by Rice (1925) is used to measure party cohesion in parliamentary votes by considering two voting blocks (usually government and opposition)

Usage

rice(x)

Arguments

x	(factor). A factor vector with two levels (i.e., Yay or Nay)

Value

The index ranges from 0 to 1, where 1 is complete cohesion and 0 the formation of two equally sized subgroups within the party.

References

Rice, S. A. (1925). The Behavior of Legislative Groups: A Method of Measurement. Political Science Quarterly, 40(1), 60–72. https://doi.org/10.2307/2142407

Examples

voting <- as.factor(c(rep("Yes", 90), rep("No", 10)))
rice(voting)

politicsR documentation built on March 31, 2023, 10:10 p.m.