Table 8.

Results of the GMM model

Variables(1)(2)(3)(4)(5)
Sustainability coursesSustainability publicationsCitationsSpinoff SustainabilityGreen patents
Yt – 1−0.095 (0.074)0.545*** (0.159)0.055 (0.087)0.092 (0.068)0.420*** (0.077)
Rankingt-10.311* (0.163)12.49* (7.258)−847.6** (349.2)−0.275 (0.260)−0.443*** (0.144)
Sizet-10.054 (0.058)2.554 (1.846)−50.51 (47.01)0.004 (0.023)−0.051** (0.025)
THE dummyt-1−0.190 (0.173)4.027 (12.93)142.6 (128.1)−0.019 (0.107)−0.173 (0.205)
STEM-faculty ratiot-1−0.839 (2.212)378.0 (919.8)−530.6 (1,493)−0.190 (1.507)1.322 (1.242)
Tuitiont-1−0.230* (0.129)−60.84*** (21.54)73.00 (60.50)−0.065 (0.121)0.047 (0.061)
RUS0.605*** (0.225)48.64*** (12.72)231.5* (125.1)0.042 (0.096)0.230 (0.166)
PNRR0.395** (0.155)5.031 (5.239)25.86 (113.0)−0.093 (0.157)
Year dummyYesYesYesYesYes
Arellano-Bond test AR(1)−1.95***−2.77***−2.70***−4.20***−2.87***
Arellano-Bond test AR(2)−0.702.08−0.080.231.35
Hansen-test39.815.237.112.965.8
Note(s):

This table reports our analysis of the impact of sustainability ranking on sustainability performance. We use a GMM model. This table is used to test the H3a and H3b. Independent and control variables are lagged by one year (t − 1). Lagged values of the dependent variable and ranking are used as GMM instruments, while the remaining variables are used as IV instruments. Arellano-Bond and Hansen tests confirm the model’s validity. Standard errors in parentheses. ***p < 0.01, **p < 0.05, *p < 0.1

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