Research Article

Competition, Income Distribution, and the Middle Class: An Experimental Study

Table 2

Individual effort by treatment.

Coefficient SE Expected sign

Baseline
Mean −0.281 0.231 0.228 +
Variance 0.038 0.209 0.855 +
Skewness −0.552 0.194 0.006
Constant 3.170 0.200 0.000

0.0132
3.76 0.015

Veto
Mean −0.313 0.208 0.137
Variance −0.063 0.181 0.731
Skewness 0.375 0.222 0.095
Constant 2.729 0.180 0.000

0.008
1.96 0.128

Note. Fixed effects regression ( in both regressions). Endogenous variable: effort. SE: robust standard errors. Subject and period dummies. : significance level of a two-tailed -test.