The Role of Curtailment Versus Efficiency on Spillovers Among Pro-Environmental Behaviors: Evidence from Two Towns in Granada, Spain
Abstract
:1. Introduction
2. Methods
2.1. Model Specification
2.2. Data, Sample, and Variables
2.3. Empirical Strategy
2.4. Endogeneity
3. Results
Robustness Checks
4. Discussion
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
Appendix A: Set of Questions Used to Evaluate the Level of Environmental Concern
Appendix B: Set of Questions Used as Instruments for the Index on Water-Saving Habits
- Do you think that, in accordance with EU standards, your municipality should take steps towards a more efficient and sustainable use of water resources and, particularly, towards reducing network losses? [Yes/No]
- Do you have a rough idea of the percentage of water network losses in your municipality? [Yes/No]
- Would you be willing to pay an extra amount in your water bill to ensure more decisive action to improve the current state of the supply networks? [Yes/No]
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Set of Variables | Variable | Description | N | Mean | SD | Min | Max |
---|---|---|---|---|---|---|---|
Dependent variables | Bottledwater | Household reports consuming bottled water on a regular basis (Dummy) | 528 | 0.322 | 0.468 | 0 | 1 |
Quantity | Bottled water consumption (in liters per week) | 528 | 4.333 | 7.748 | 0 | 48 | |
Socioecon. | Municipality | Household is located in Baza (Dummy) | 528 | 0.496 | 0.501 | 0 | 1 |
HholdIncome | Household income (Ordinal) | 528 | 6.417 | 3.677 | 1 | 14 | |
NoEduc | Respondent has not completed any formal education level (Dummy) | 528 | 0.047 | 0.213 | 0 | 1 | |
BasicEduc | Respondent has completed elementary education (Dummy) | 528 | 0.348 | 0.477 | 0 | 1 | |
Secondary_Educ | Respondent has completed secondary education (Dummy) | 528 | 0.303 | 0.460 | 0 | 1 | |
HighEduc | Respondent has completed university studies, whether an undergraduate degree, master’s, or PhD (Dummy) | 528 | 0.301 | 0.459 | 0 | 1 | |
Length | Length of time that the respondent has been living in their town (Years) | 528 | 35.55 | 19.85 | 1 | 86 | |
Hsize | Household size (Number of members in the household) | 528 | 2.955 | 1.157 | 1 | 6 | |
Childrenlessthan2 | The household reports having members under 2 years old (Dummy) | 528 | 0.0720 | 0.259 | 0 | 1 | |
Water quality and service perception | Quality | Satisfaction with water quality: 1 (very unsatisfied) to 5 (very satisfied) | 528 | 4.027 | 1.109 | 1 | 5 |
Serviceperc | Satisfaction with wastewater service: 1 (very unsatisfied) to 5 (very satisfied) | 508 | 3.415 | 1.178 | 1 | 5 | |
Organoleptics | Color | Respondent perceives that water is not clear: 1 (totally disagree) to 5 (totally agree) | 528 | 1.509 | 0.893 | 1 | 5 |
Smell | Respondent perceives that water has some odor: 1 (totally disagree) to 5 (totally agree) | 528 | 1.555 | 0.878 | 1 | 5 | |
Taste | Respondent perceives that water has some taste: 1 (totally disagree) to 5 (totally agree) | 523 | 1.740 | 1.064 | 1 | 5 | |
Interruptions | Cutfreq | Incidence of water supply cuts that the respondent noticed during the summer: 0 (never) to 5 (very frequently, more than 10 times) | 528 | 1.246 | 0.508 | 1 | 4 |
Cutdisruption | Supply cuts caused inconvenience to respondent: 1 (a little) to 5 (a lot) | 528 | 4.214 | 0.959 | 1 | 5 | |
Environm. variables | Envconcernavg | Respondent’s average value reported for a set of environmental attitudes | 528 | 3.940 | 0.512 | 1.50 | 5 |
Envworried | Respondent’s environmental concern is over the mean of the sample (Dummy) | 528 | 0.540 | 0.499 | 0 | 1 | |
Watereff | The household has installed some water-saving devices on faucets, showers, or cisterns (Dummy) | 528 | 0.616 | 0.487 | 0 | 1 | |
filling_dishwasher | Respondent reports waiting until the dishwasher and washing machine are full before running them (Dummy) | 499 | 0.972 | 0.165 | 0 | 1 | |
Closing_taps | Respondent reports turning off the faucet while brushing their teeth or shaving (Dummy) | 528 | 0.936 | 0.246 | 0 | 1 | |
Reducing_shower | Respondent reports trying to reduce the duration of his/her shower (Dummy) | 528 | 0.928 | 0.2587 | 0 | 1 | |
Waterhabitindex | Index indicating number of water conservation habits held by the respondent (Count) | 528 | 2.78 | 0.48 | 0 | 3 | |
Price variables | Priceperception | Respondent’s perception of tap water price: 1 (very cheap) to 5 (very expensive) | 513 | 3.780 | 0.834 | 1 | 5 |
Heckman | OLS | Tobit | Cragg | |||
---|---|---|---|---|---|---|
VARIABLES | Participation | Intensity | Participation | Intensity | ||
Municipality | −0.225 | 0.0339 | 0.0816 | −1.776 | −0.228 | 2.518 |
(0.146) | (0.100) | (0.0965) | (1.996) | (0.145) | (1.709) | |
Childrenlessthan2 | 0.455 * | −0.0669 | 4.160 | 0.435 * | −0.643 | |
(0.245) | (0.135) | (3.216) | (0.254) | (2.362) | ||
Length | −0.0108 *** | −0.00425 | −0.00257 | −0.150 *** | −0.0109 *** | −0.0288 |
(0.00380) | (0.00269) | (0.00250) | (0.0527) | (0.00379) | (0.0450) | |
Hholdincome | −0.00687 | −0.00907 | −0.00877 | −0.230 | −0.00707 | −0.357 |
(0.0214) | (0.0130) | (0.0135) | (0.284) | (0.0209) | (0.246) | |
Hsize | −0.0417 | 0.185 *** | 0.187 *** | 0.817 | −0.0360 | 3.405 *** |
(0.0600) | (0.0365) | (0.0380) | (0.815) | (0.0596) | (0.720) | |
BasicEduc | 0.0254 | 0.129 | 0.167 | −0.0632 | −0.0105 | 3.283 |
(0.363) | (0.263) | (0.271) | (5.115) | (0.359) | (5.076) | |
SeconEduc | 0.170 | 0.251 | 0.253 | 3.003 | 0.154 | 5.256 |
(0.374) | (0.276) | (0.289) | (5.305) | (0.370) | (5.341) | |
Higheducation | 0.0818 | 0.104 | 0.130 | 1.624 | 0.0635 | 3.263 |
(0.386) | (0.277) | (0.286) | (5.415) | (0.380) | (5.315) | |
Color | 0.159 | −0.00158 | −0.0255 | 1.862 | 0.148 | −0.796 |
(0.0970) | (0.0610) | (0.0600) | (1.279) | (0.0963) | (1.044) | |
Smell | 0.0842 | 0.00276 | −0.00382 | 1.047 | 0.0872 | 0.729 |
(0.0989) | (0.0536) | (0.0548) | (1.264) | (0.0955) | (0.965) | |
Taste | 0.141 * | 0.0768 * | 0.0518 | 2.144 ** | 0.121 | 1.148 |
(0.0780) | (0.0433) | (0.0406) | (0.990) | (0.0753) | (0.718) | |
Quality | −0.317 *** | −0.112 ** | −0.0558 | −3.985 *** | −0.315 *** | −0.931 |
(0.0769) | (0.0550) | (0.0400) | (0.983) | (0.0761) | (0.718) | |
Serviceperc | 0.102 | 0.00571 | −0.0186 | 1.117 | 0.114 * | −0.328 |
(0.0647) | (0.0410) | (0.0373) | (0.850) | (0.0649) | (0.666) | |
Cutfreq | 0.346 ** | 0.0241 | −0.0271 | 3.813 ** | 0.381 *** | −0.760 |
(0.148) | (0.0867) | (0.0784) | (1.844) | (0.147) | (1.376) | |
Cutdisruption | 0.0525 | −0.00908 | -0.0217 | 0.488 | 0.0541 | −0.223 |
(0.0733) | (0.0439) | (0.0441) | (0.987) | (0.0731) | (0.813) | |
Envconcernavg | 0.305 | 0.118 | 0.0433 | 3.925 | 0.303 | 0.250 |
(0.255) | (0.180) | (0.177) | (3.458) | (0.246) | (3.169) | |
Envworried | −0.120 | 0.0361 | 0.0761 | −0.373 | −0.115 | 2.083 |
(0.231) | (0.152) | (0.157) | (3.156) | (0.227) | (2.803) | |
Watereff | −0.0427 | −0.000460 | −0.000347 | −0.123 | −0.0465 | 0.226 |
(0.148) | (0.0983) | (0.102) | (2.043) | (0.148) | (1.827) | |
Waterhabitindex | −0.429 ** | −0.361 ** | −0.299 ** | −7.319 ** | −0.422 ** | −6.192 ** |
(0.208) | (0.144) | (0.143) | (2.852) | (0.206) | (2.599) | |
Priceperception | −0.0100 | 0.110 ** | 0.118 ** | 0.636 | −0.00102 | 1.746 * |
(0.0860) | (0.0522) | (0.0536) | (1.161) | (0.0853) | (0.969) | |
Constant | −1.363 | 1.006 | 1.527 * | −23.75 | −1.433 | −4.188 |
(0.276) | (0.272) | 1.527 * | 15.51 *** | (1.213) | (15.60) | |
0.614 | ||||||
(0.439) | ||||||
Σ | −0.672 *** | 7.779963 *** (0.5984736) | ||||
(0.140) | ||||||
LR test of independent equations | = 1.08 | |||||
(0.2977) a |
Tests | Heckman | Tests | Cragg | |
---|---|---|---|---|
Participation | Intensity | |||
Hausman | 0.02 | T-test on the included residual | –0.44 | 1.13 |
(0.8951) | (0.663) | (0.257) | ||
Sargan test | 0.1914 | F-test of exclusion of instruments | 0.761 | 0.743 |
(0.6618) | (0.6835) | (0.6897) | ||
F-test of excluded instruments (First stage 2SLS) | 15.50 | F-test (First stage) | 3.00 | |
(0.0014) | (0.0305) |
Marginal Effects | ||
---|---|---|
VARIABLES | Participation | Intensity (Unconditional) |
Municipality | −0.0638819 | −0.2073927 |
(0.0404749) | (0.7594287) | |
Childrenlessthan2 | 0.1219732 * | 1.417454 |
(0.0651619) | (1.030329) | |
Length | −0.0030683 *** | −0.0466816 *** |
(0.0009935) | (0.0180355) | |
Hholdincome | −0.0019846 | −0.1132304 |
(0.0054422) | (0.101826) | |
Hsize | −0.0100926 | 0.7046737 ** |
(0.0171237) | (0.3108281) | |
BasicEduc | −0.0029481 | 0.7668188 |
(0.0863704) | (2.175619) | |
SeconEduc | 0.043138 | 1.845703 |
(0.1146203) | (2.508469) | |
Higheducation | 0.0178282 | 1.030414 |
(0.1038933) | (2.320931) | |
Color | 0.0416047 | 0.3420471 |
(0.0288384) | (0.5051409) | |
Smell | 0.0244638 | 0.4946904 |
(0.0303447) | (0.56174) | |
Taste | 0.0340424 | 0.7211814 ** |
(0.0268369) | (0.3493412) | |
Quality | −0.0883292 *** | −1.368968 |
(0.0297569) | (0.3534333) | |
Serviceperc | 0.0318698 | 0.3311705 |
(0.0207237) | (0.2342998) | |
Cutfreq | 0.1069017 * | 1.194052 |
(0.0591058) | (0.8170846) | |
Cutdisruption | 0.0151802 | 0.1412496 |
(0.0268184 | (0.3591169) | |
Envconcernavg | 0.0849113 | 1.157794 |
(0.0731812) | (1.155939) | |
Envworried | −0.0321705 | 0.0954011 |
(0.0640323) | (0.9549162) | |
Watereff | −0.0130449 | −0.1129135 |
(0.0382911) | (0.617297) | |
Waterhabitindex | −0.1182606 ** | –3.045422 *** |
(0.0487385) | (1.009367) | |
Priceperception | −0.0002867 | 0.4243339 |
(0.0262441) | (0.4545721) |
Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | |
---|---|---|---|---|---|
VARIABLES | (Socioecon.) | (+Water Quality) | (+Interruptions) | (+Environ.) | (+Price Perception) |
Municipality | −0.333*** | −0.322 ** | −0.293 ** | −0.247 * | −0.228 |
(0.120) | (0.134) | (0.136) | (0.143) | (0.145) | |
Childrenlessthan2 | 0.438 ** | 0.538 ** | 0.520 ** | 0.462 * | 0.435 * |
(0.223) | (0.246) | (0.250) | (0.249) | (0.254) | |
Length | −0.0125 *** | −0.0102 *** | −0.00995 *** | −0.0106 *** | −0.0109 *** |
(0.00328) | (0.00364) | (0.00366) | (0.00373) | (0.00379) | |
Hholdincome | −0.0294 * | −0.0222 | −0.0114 | −0.00631 | −0.00707 |
(0.0172) | (0.0191) | (0.0198) | (0.0206) | (0.0209) | |
Hsize | −0.0124 | −0.0332 | −0.0471 | −0.0422 | −0.0360 |
(0.0520) | (0.0573) | (0.0580) | (0.0592) | (0.0596) | |
BasicEduc | 0.0653 | 0.0779 | 0.0847 | –0.0209 | −0.0105 |
(0.315) | (0.357) | (0.358) | (0.356) | (0.359) | |
SeconEduc | 0.217 | 0.231 | 0.225 | 0.112 | 0.154 |
(0.325) | (0.365) | (0.368) | (0.366) | (0.370) | |
Higheducation | 0.327 | 0.215 | 0.234 | 0.0861 | 0.0635 |
(0.331) | (0.373) | (0.375) | (0.374) | (0.380) | |
Color | 0.167* | 0.144 | 0.153 | 0.148 | |
(0.0916) | (0.0936) | (0.0954) | (0.0963) | ||
Smell | 0.0717 | 0.0633 | 0.0638 | 0.0872 | |
(0.0933) | (0.0937) | (0.0938) | (0.0955) | ||
Taste | 0.134* | 0.126 * | 0.124 * | 0.121 | |
(0.0737) | (0.0738) | (0.0749) | (0.0753) | ||
Quality | −0.322 *** | −0.319 *** | −0.311 *** | −0.315 *** | |
(0.0737) | (0.0744) | (0.0758) | (0.0761) | ||
Serviceperc | 0.0981 | 0.118* | 0.116* | 0.114* | |
(0.0615) | (0.0628) | (0.0637) | (0.0649) | ||
Cutfreq | 0.289 ** | 0.331 ** | 0.381 *** | ||
(0.140) | (0.145) | (0.147) | |||
Cutdisruption | 0.0739 | 0.0674 | 0.0541 | ||
(0.0705) | (0.0718) | (0.0731) | |||
Envconcernavg | 0.348 | 0.303 | |||
(0.243) | (0.246) | ||||
Envworried | −0.130 | −0.115 | |||
(0.223) | (0.227) | ||||
Watereff | −0.0909 | −0.0465 | |||
(0.147) | (0.148) | ||||
Waterhabitindex | −0.344 * | −0.422 ** | |||
(0.193) | (0.206) | ||||
Priceperception | −0.00102 | ||||
(0.0853) | |||||
Constant | 0.108 | 0.379 | −0.368 | −1.576 | −1.433 |
(0.368) | (0.559) | (0.706) | (1.159) | (1.213) | |
Observations | 528 | 503 | 503 | 503 | 493 |
Log-likelihood | −865.12747 | −783.29806 | −780.59767 | −772.90769 | −762.65091 |
Sigma | 8.2275 *** | 8.1389 *** | 8.1170 *** | 7.8541 *** | 7.7799 *** |
(0.63770) | (0.6430) | (0.63992) | (0.60618) | (0.59847) |
Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | |
---|---|---|---|---|---|
VARIABLES | (Socioeconomic) | (+Water Quality) | (+Interruptions) | (+Environment) | (+Price Perception) |
Municipality | 3.589 ** | 3.754 ** | 3.383 ** | 2.769 | 2.518 |
(1.580) | (1.621) | (1.674) | (1.716) | (1.709) | |
Childrenlessthan2 | −1.399 | −1.125 | −0.805 | −1.068 | −0.643 |
(2.364) | (2.421) | (2.439) | (2.367) | (2.362) | |
Length | −0.0395 | −0.0194 | −0.0158 | −0.0236 | −0.0288 |
(0.0429) | (0.0448) | (0.0448) | (0.0447) | (0.0450) | |
Hholdincome | −0.158 | −0.267 | −0.290 | −0.294 | −0.357 |
(0.222) | (0.243) | (0.245) | (0.244) | (0.246) | |
Hsize | 3.296 *** | 3.298 *** | 3.388 *** | 3.623 *** | 3.405 *** |
(0.695) | (0.728) | (0.738) | (0.723) | (0.720) | |
BasicEduc | 2.854 | 4.804 | 4.353 | 2.756 | 3.283 |
(5.026) | (5.283) | (5.300) | (5.107) | (5.076) | |
SeconEduc | 3.051 | 5.900 | 5.680 | 3.920 | 5.256 |
(5.115) | (5.457) | (5.488) | (5.328) | (5.341) | |
Higheducation | 2.113 | 3.831 | 3.382 | 1.336 | 3.263 |
(5.137) | (5.386) | (5.392) | (5.230) | (5.315) | |
Color | −0.542 | −0.396 | −0.569 | −0.796 | |
(1.054) | (1.063) | (1.051) | (1.044) | ||
Smell | 0.572 | 0.469 | 0.756 | 0.729 | |
(0.987) | (1.001) | (0.982) | (0.965) | ||
Taste | 0.760 | 0.777 | 1.129 | 1.148 | |
(0.723) | (0.721) | (0.723) | (0.718) | ||
Quality | −0.999 | −1.033 | −1.219 * | −0.931 | |
(0.733) | (0.734) | (0.711) | (0.718) | ||
Serviceperc | –0.333 | −0.250 | −0.321 | −0.328 | |
(0.691) | (0.701) | (0.674) | (0.666) | ||
Cutfreq | −1.146 | −1.122 | −0.760 | ||
(1.381) | (1.380) | (1.376) | |||
Cutdisruption | 0.138 | −0.102 | −0.223 | ||
(0.809) | (0.819) | (0.813) | |||
Envconcernavg | −0.414 | 0.250 | |||
(3.192) | (3.169) | ||||
Envworried | 2.842 | 2.083 | |||
(2.804) | (2.803) | ||||
Watereff | −0.0183 | 0.226 | |||
(1.827) | (1.827) | ||||
Waterhabitindex | −6.108 ** | −6.192 ** | |||
(2.530) | (2.599) | ||||
Priceperception | 1.746* | ||||
(0.969) | |||||
Constant | 0.520 | 1.048 | 5.267 | 5.267 | −4.188 |
(5.675) | (7.076) | (14.83) | (14.83) | (15.60) | |
Observations | 528 | 503 | 503 | 503 | 493 |
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Share and Cite
Suárez-Varela, M.; Dinar, A. The Role of Curtailment Versus Efficiency on Spillovers Among Pro-Environmental Behaviors: Evidence from Two Towns in Granada, Spain. Sustainability 2020, 12, 769. https://doi.org/10.3390/su12030769
Suárez-Varela M, Dinar A. The Role of Curtailment Versus Efficiency on Spillovers Among Pro-Environmental Behaviors: Evidence from Two Towns in Granada, Spain. Sustainability. 2020; 12(3):769. https://doi.org/10.3390/su12030769
Chicago/Turabian StyleSuárez-Varela, Marta, and Ariel Dinar. 2020. "The Role of Curtailment Versus Efficiency on Spillovers Among Pro-Environmental Behaviors: Evidence from Two Towns in Granada, Spain" Sustainability 12, no. 3: 769. https://doi.org/10.3390/su12030769