. Author manuscript; available in PMC: 2018 Jan 22.

Published in final edited form as: J Econ Behav Organ. 2014 Nov 25;109:120–134. doi: 10.1016/j.jebo.2014.11.009

Table 5.

OLS regressions: Contributions on others’ lagged contributions

Dependent variable: c_i, _t	Base	Val		Cap
Contributions by i		l-types	h-types	l-types	h-types
(Avg.) lagged contrib. l-types ${\bar{c}}_{- i, t - 1}^{l o w}$	0.702^*** (0.107)	0.645^*** (0.118)	0.333^* (0.161)	0.473^*** (0.111)	0.487^*** (0.185)
Lagged contrib. h-types ${\bar{c}}_{- i, t - 1}^{h i g h}$		0.075 (0.058)		0.317^** (0.081)
Constant	3.236^*** (1.527)	0.327 (1.898)	14.900^*** (2.199)	3.157^* (1.779)	10.958^*** (2.470)
Period dummies	Yes	Yes	Yes	Yes	Yes

# Observations	405	288	144	270	135
Adj. R²	0.465	0.447	0.083	0.426	0.283

Note: OLS regressions with data from period 2-10. Robust standard errors (clustered on groups) in parentheses. *** Significance at p < 0.01, ** significance at p < 0.05, * significance at p < 0.1.