Maternal Life Satisfaction and Child Outcomes: Are They Related?
Author
Suggested Citation
Download full text from publisher
Other versions of this item:
- Berger, Eva M. & Spiess, C. Katharina, 2011. "Maternal Life Satisfaction and Child Outcomes: Are They Related?," Journal of Economic Psychology, Elsevier, vol. 32(1), pages 142-158, February.
References listed on IDEAS
- Eliana Garces & Duncan Thomas & Janet Currie, 2002.
"Longer-Term Effects of Head Start,"
American Economic Review, American Economic Association, vol. 92(4), pages 999-1012, September.
- Eliana Garces & Duncan Thomas & Janet Currie, 2000. "Longer Term Effects of Head Start," NBER Working Papers 8054, National Bureau of Economic Research, Inc.
- Garces, E. & Thomas, D. & Currie, J., 2000. "Longer Term Effects of Head Start," Papers 00-20, RAND - Labor and Population Program.
- James Heckman & Flavio Cunha, 2007.
"The Technology of Skill Formation,"
American Economic Review, American Economic Association, vol. 97(2), pages 31-47, May.
- James Heckman & Pedro Carneiro & Flavio Cunha, 2004. "The Technology of Skill Formation," 2004 Meeting Papers 681, Society for Economic Dynamics.
- Flavio Cunha & James Heckman, 2007. "The Technology of Skill Formation," NBER Working Papers 12840, National Bureau of Economic Research, Inc.
- Cunha, Flavio & Heckman, James J., 2007. "The Technology of Skill Formation," IZA Discussion Papers 2550, Institute of Labor Economics (IZA).
- Jürgen Schupp & C. Katharina Spieß & Gert G. Wagner, 2008. "Die verhaltenswissenschaftliche Weiterentwicklung des Erhebungsprogramms des SOEP," Vierteljahrshefte zur Wirtschaftsforschung / Quarterly Journal of Economic Research, DIW Berlin, German Institute for Economic Research, vol. 77(3), pages 63-76.
- Havnes, Tarjei & Mogstad, Magne, 2009.
"No Child Left Behind: Universal Child Care and Children's Long-Run Outcomes,"
Memorandum
23/2009, Oslo University, Department of Economics.
- Tarjei Havnes & Magne Mogstad, 2009. "No Child Left Behind. Universal Child Care and Children's Long-Run Outcomes," Discussion Papers 582, Statistics Norway, Research Department.
- Havnes, Tarjei & Mogstad, Magne, 2009. "No Child Left Behind: Universal Child Care and Children’s Long-Run Outcomes," IZA Discussion Papers 4561, Institute of Labor Economics (IZA).
- Beck A. Taylor & Eric Dearing & Kathleen McCartney, 2004. "Incomes and Outcomes in Early Childhood," Journal of Human Resources, University of Wisconsin Press, vol. 39(4).
- Andrew E. Clark, 2006.
"A Note on Unhappiness and Unemployment Duration,"
Applied Economics Quarterly (formerly: Konjunkturpolitik), Duncker & Humblot, Berlin, vol. 52(4), pages 291-308.
- Andrew E. Clark, 2006. "A note on unhappiness and unemployment duration," Working Papers halshs-00590444, HAL.
- Clark, Andrew E., 2006. "A Note on Unhappiness and Unemployment Duration," IZA Discussion Papers 2406, Institute of Labor Economics (IZA).
- Andrew E. Clark, 2006. "A note on unhappiness and unemployment duration," PSE Working Papers halshs-00590444, HAL.
- Bruno S. Frey & Alois Stutzer, 2002.
"What Can Economists Learn from Happiness Research?,"
Journal of Economic Literature, American Economic Association, vol. 40(2), pages 402-435, June.
- Bruno S. Frey & Alois Stutzer, "undated". "What can Economists Learn from Happiness Research?," IEW - Working Papers 080, Institute for Empirical Research in Economics - University of Zurich.
- Bruno S. Frey & Alois Stutzer, 2001. "What Can Economists Learn from Happiness Research?," CESifo Working Paper Series 503, CESifo.
- Carneiro, Pedro & Heckman, James J., 2003.
"Human Capital Policy,"
IZA Discussion Papers
821, Institute of Labor Economics (IZA).
- James Heckman & Pedro Carneiro, 2003. "Human Capital Policy," NBER Working Papers 9495, National Bureau of Economic Research, Inc.
- Anger, Silke & Heineck, Guido, 2010.
"Do Smart Parents Raise Smart Children? The Intergenerational Transmission of Cognitive Abilities,"
EconStor Open Access Articles and Book Chapters, ZBW - Leibniz Information Centre for Economics, vol. 23, pages 1105-1132.
- Silke Anger & Guido Heineck, 2010. "Do smart parents raise smart children? The intergenerational transmission of cognitive abilities," Journal of Population Economics, Springer;European Society for Population Economics, vol. 23(3), pages 1105-1132, June.
- Silke Anger & Guido Heineck, 2009. "Do Smart Parents Raise Smart Children?: The Intergenerational Transmission of Cognitive Abilities," SOEPpapers on Multidisciplinary Panel Data Research 156, DIW Berlin, The German Socio-Economic Panel (SOEP).
- Pfeiffer, Friedhelm & Coneus, Katja, 2007.
"Self-Productivity in Early Childhood,"
ZEW Discussion Papers
07-053 [rev.], ZEW - Leibniz Centre for European Economic Research.
- Katja Coneus & Friedhelm Pfeiffer, 2007. "Self-Productivity in Early Childhood," SOEPpapers on Multidisciplinary Panel Data Research 39, DIW Berlin, The German Socio-Economic Panel (SOEP).
- Coneus, Katja & Pfeiffer, Friedhelm, 2007. "Self-Productivity in Early Childhood," ZEW Discussion Papers 07-053, ZEW - Leibniz Centre for European Economic Research.
- James J. Heckman, 2008.
"Schools, Skills, And Synapses,"
Economic Inquiry, Western Economic Association International, vol. 46(3), pages 289-324, July.
- James J. Heckman, 2008. "Schools, Skills, and Synapses," Working Papers 200833, Geary Institute, University College Dublin.
- James J. Heckman, 2008. "Schools, Skills, and Synapses," NBER Working Papers 14064, National Bureau of Economic Research, Inc.
- Heckman, James J., 2008. "Schools, Skills, and Synapses," IZA Discussion Papers 3515, Institute of Labor Economics (IZA).
- Susanne James-Burdumy, 2005. "The Effect of Maternal Labor Force Participation on Child Development," Journal of Labor Economics, University of Chicago Press, vol. 23(1), pages 177-211, January.
- Cunha, Flavio & Heckman, James J. & Lochner, Lance, 2006.
"Interpreting the Evidence on Life Cycle Skill Formation,"
Handbook of the Economics of Education, in: Erik Hanushek & F. Welch (ed.), Handbook of the Economics of Education, edition 1, volume 1, chapter 12, pages 697-812,
Elsevier.
- Cunha, Flavio & Heckman, James J. & Lochner, Lance John & Masterov, Dimitriy V., 2005. "Interpreting the Evidence on Life Cycle Skill Formation," IZA Discussion Papers 1675, Institute of Labor Economics (IZA).
- Flavio Cunha & James J. Heckman & Lance Lochner & Dimitriy V. Masterov, 2005. "Interpreting the Evidence on Life Cycle Skill Formation," NBER Working Papers 11331, National Bureau of Economic Research, Inc.
- Cawley, John & Spiess, C. Katharina, 2008.
"Obesity and skill attainment in early childhood,"
Economics & Human Biology, Elsevier, vol. 6(3), pages 388-397, December.
- John Cawley & C. Katharina Spiess, 2008. "Obesity and Skill Attainment in Early Childhood," NBER Working Papers 13997, National Bureau of Economic Research, Inc.
- Magnuson, Katherine A. & Ruhm, Christopher & Waldfogel, Jane, 2007.
"Does prekindergarten improve school preparation and performance?,"
Economics of Education Review, Elsevier, vol. 26(1), pages 33-51, February.
- Katherine A. Magnuson & Christopher J. Ruhm & Jane Waldfogel, 2004. "Does Prekindergarten Improve School Preparation and Performance?," NBER Working Papers 10452, National Bureau of Economic Research, Inc.
- James J. Heckman, 2007.
"The Economics, Technology and Neuroscience of Human Capability Formation,"
NBER Working Papers
13195, National Bureau of Economic Research, Inc.
- Heckman, James J., 2007. "The Economics, Technology and Neuroscience of Human Capability Formation," IZA Discussion Papers 2875, Institute of Labor Economics (IZA).
- Gert G. Wagner & Joachim R. Frick & Jürgen Schupp, 2007.
"The German Socio-Economic Panel Study (SOEP) – Scope, Evolution and Enhancements,"
Schmollers Jahrbuch : Journal of Applied Social Science Studies / Zeitschrift für Wirtschafts- und Sozialwissenschaften, Duncker & Humblot, Berlin, vol. 127(1), pages 139-169.
- Gert G. Wagner & Joachim R. Frick & Jürgen Schupp, 2007. "The German Socio-Economic Panel Study (SOEP): Scope, Evolution and Enhancements," SOEPpapers on Multidisciplinary Panel Data Research 1, DIW Berlin, The German Socio-Economic Panel (SOEP).
- Frey, Bruno S & Stutzer, Alois, 2000.
"Happiness, Economy and Institutions,"
Economic Journal, Royal Economic Society, vol. 110(466), pages 918-938, October.
- Bruno S. Frey & Alois Stutzer, "undated". "Happiness, Economy and Institutions," IEW - Working Papers 015, Institute for Empirical Research in Economics - University of Zurich.
- Bruno S. Frey & Alois Stutzer, 2000. "Happiness, Economy and Institutions," CESifo Working Paper Series 246, CESifo.
- Nicole Schmiade & C. Katharina Spieß & Wolfgang Tietze, 2008.
"Zur Erhebung des adaptiven Verhaltens von zwei- und dreijährigen Kindern im Sozio-oekonomischen Panel (SOEP),"
Data Documentation
35, DIW Berlin, German Institute for Economic Research.
- Nicole Schmiade & C. Katharina Spieß & Wolfgang Tietze, 2008. "Zur Erhebung des adaptiven Verhaltens von zwei- und dreijährigen Kindern im Sozio-oekonomischen Panel (SOEP)," SOEPpapers on Multidisciplinary Panel Data Research 116, DIW Berlin, The German Socio-Economic Panel (SOEP).
- Jürgen Schupp & Sabrina Herrmann & Peter Jaensch & Frieder R. Lang, 2008. "Erfassung kognitiver Leistungspotentiale Erwachsener im Sozio-oekonomischen Panel (SOEP)," Data Documentation 32, DIW Berlin, German Institute for Economic Research.
- Charles L. Baum II, 2003. "Does Early Maternal Employment Harm Child Development? An Analysis of the Potential Benefits of Leave Taking," Journal of Labor Economics, University of Chicago Press, vol. 21(2), pages 381-408, April.
- Christina Felfe & Amy Hsin, 2009. "The Effect of Maternal Work Conditions on Child Development," University of St. Gallen Department of Economics working paper series 2009 2009-32, Department of Economics, University of St. Gallen.
- Flavio Cunha & James J. Heckman, 2008. "Formulating, Identifying and Estimating the Technology of Cognitive and Noncognitive Skill Formation," Journal of Human Resources, University of Wisconsin Press, vol. 43(4).
- Fitzpatrick Maria D, 2008. "Starting School at Four: The Effect of Universal Pre-Kindergarten on Children's Academic Achievement," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 8(1), pages 1-40, November.
- Dolan, Paul & Peasgood, Tessa & White, Mathew, 2008. "Do we really know what makes us happy A review of the economic literature on the factors associated with subjective well-being," Journal of Economic Psychology, Elsevier, vol. 29(1), pages 94-122, February.
- Jennifer Hill & Jane Waldfogel & Jeanne Brooks-Gunn, 2002. "Differential effects of high-quality child care," Journal of Policy Analysis and Management, John Wiley & Sons, Ltd., vol. 21(4), pages 601-627.
- Coneus, Katja & Sprietsma, Maresa, 2009. "Intergenerational transmission of human capital in early childhood," ZEW Discussion Papers 09-038, ZEW - Leibniz Centre for European Economic Research.
- Rafael Di Tella & Robert MacCulloch, 2006. "Some Uses of Happiness Data in Economics," Journal of Economic Perspectives, American Economic Association, vol. 20(1), pages 25-46, Winter.
- Todd E. Elder & Darren H. Lubotsky, 2009. "Kindergarten Entrance Age and Children’s Achievement: Impacts of State Policies, Family Background, and Peers," Journal of Human Resources, University of Wisconsin Press, vol. 44(3).
Most related items
These are the items that most often cite the same works as this one and are cited by the same works as this one.- Almond, Douglas & Currie, Janet, 2011.
"Human Capital Development before Age Five,"
Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 4, chapter 15, pages 1315-1486,
Elsevier.
- Douglas Almond & Janet Currie, 2010. "Human Capital Development Before Age Five," NBER Working Papers 15827, National Bureau of Economic Research, Inc.
- Peter, Frauke, 2016.
"The effect of involuntary maternal job loss on children's behaviour and non-cognitive skills,"
Labour Economics, Elsevier, vol. 42(C), pages 43-63.
- Peter, Frauke, 2016. "The effect of involuntary maternal job loss on children's behaviour and non-cognitive skills," EconStor Open Access Articles and Book Chapters, ZBW - Leibniz Information Centre for Economics, vol. 42, pages 43-63.
- Cinnirella, Francesco & Piopiunik, Marc & Winter, Joachim, 2011.
"Why does height matter for educational attainment? Evidence from German children,"
Economics & Human Biology, Elsevier, vol. 9(4), pages 407-418.
- Cinnirella, Francesco & Piopiunik, Marc & Winter, Joachim, 2011. "Why does height matter for educational attainment? Evidence from German children," Munich Reprints in Economics 20069, University of Munich, Department of Economics.
- Sarrias, Mauricio & Blanco, Alejandra, 2022. "Bodyweight and human capital development: Assessing the impact of obesity on socioemotional skills during childhood in Chile," Economics & Human Biology, Elsevier, vol. 47(C).
- Herbst, Chris M. & Tekin, Erdal, 2010.
"Child care subsidies and child development,"
Economics of Education Review, Elsevier, vol. 29(4), pages 618-638, August.
- Herbst, Chris M. & Tekin, Erdal, 2008. "Child Care Subsidies and Child Development," IZA Discussion Papers 3836, Institute of Labor Economics (IZA).
- Chris M. Herbst & Erdal Tekin, 2008. "Child Care Subsidies and Child Development," NBER Working Papers 14474, National Bureau of Economic Research, Inc.
- Kautz, Tim & Heckman, James J. & Diris, Ron & ter Weel, Bas & Borghans, Lex, 2014.
"Fostering and Measuring Skills: Improving Cognitive and Non-Cognitive Skills to Promote Lifetime Success,"
IZA Discussion Papers
8696, Institute of Labor Economics (IZA).
- Tim Kautz & James J. Heckman & Ron Diris & Bas ter Weel & Lex Borghans, 2014. "Fostering and Measuring Skills: Improving Cognitive and Non-cognitive Skills to Promote Lifetime Success," OECD Education Working Papers 110, OECD Publishing.
- Tim Kautz & James J. Heckman & Ron Diris & Bas ter Weel & Lex Borghans, 2014. "Fostering and Measuring Skills: Improving Cognitive and Non-Cognitive Skills to Promote Lifetime Success," NBER Working Papers 20749, National Bureau of Economic Research, Inc.
- Flavio Cunha & James J. Heckman, 2009.
"The Economics and Psychology of Inequality and Human DEvelopment,"
Journal of the European Economic Association, MIT Press, vol. 7(2-3), pages 320-364, 04-05.
- Cunha, Flavio & Heckman, James J., 2009. "The Economics and Psychology of Inequality and Human Development," IZA Discussion Papers 4001, Institute of Labor Economics (IZA).
- Flavio Cunha & James J. Heckman, 2009. "The Economics and Psychology of Inequality and Human Development," Working Papers 200934, Geary Institute, University College Dublin.
- Flavio Cunha & James J. Heckman, 2009. "The Economics and Psychology of Inequality and Human Development," NBER Working Papers 14695, National Bureau of Economic Research, Inc.
- Del Bono, Emilia & Francesconi, Marco & Ermisch, John, 2008.
"Intrafamily resource allocations: a dynamic model of birth weight,"
ISER Working Paper Series
2008-27, Institute for Social and Economic Research.
- Ermisch, John F & Francesconi, Marco & del Bono, Emilia, 2008. "Intrafamily Resource Allocations: A Dynamic Model of Birth Weight," CEPR Discussion Papers 6970, C.E.P.R. Discussion Papers.
- Del Bono, Emilia & Ermisch, John & Francesconi, Marco, 2008. "Intrafamily Resource Allocations: A Dynamic Model of Birth Weight," IZA Discussion Papers 3704, Institute of Labor Economics (IZA).
- Francesconi, Marco & Heckman, James J, 2015.
"Symposium on Child Development and Parental Investment: Introduction,"
Economics Discussion Papers
16868, University of Essex, Department of Economics.
- Francesconi, Marco & Heckman, James J., 2016. "Symposium on Child Development and Parental Investment: Introduction," IZA Discussion Papers 9977, Institute for the Study of Labor (IZA).
- Eva M. Berger & Frauke H. Peter & C. Katharina Spieß, 2010. "Wie hängen familiäre Veränderungen und das mütterliche Wohlbefinden mit der frühkindlichen Entwicklung zusammen?," Vierteljahrshefte zur Wirtschaftsforschung / Quarterly Journal of Economic Research, DIW Berlin, German Institute for Economic Research, vol. 79(3), pages 27-44.
- Vegas, Emiliana & Santibáñez, Lucrecia, 2010. "The Promise of Early Childhood Development in Latin America and the Caribbean," IDB Publications (Books), Inter-American Development Bank, number 362, November.
- Emiliana Vegas & Lucrecia Santibáñez, 2010. "The Promise of Early Childhood Development in Latin America and the Caribbean," World Bank Publications - Books, The World Bank Group, number 9385.
- Chris M. Herbst & Erdal Tekin, 2010. "The Impact of Child Care Subsidies on Child Well-Being: Evidence from Geographic Variation in the Distance to Social Service Agencies," NBER Working Papers 16250, National Bureau of Economic Research, Inc.
- Chris M. Herbst & Erdal Tekin, 2010. "The Impact of Child Care Subsidies on Child Well-Being: Evidence from Geographic Variation in the Distance to Social Service Agencies," Working Papers id:2739, eSocialSciences.
- Herbst, Chris M. & Tekin, Erdal, 2010. "The Impact of Child Care Subsidies on Child Well-Being: Evidence from Geographic Variation in the Distance to Social Service Agencies," IZA Discussion Papers 5102, Institute of Labor Economics (IZA).
- Marc Piopiunik, 2011. "Microeconometric Analyses of Education Production in Germany," ifo Beiträge zur Wirtschaftsforschung, ifo Institute - Leibniz Institute for Economic Research at the University of Munich, number 40.
- Francesco Cinnirella & Marc Piopiunik & Joachim Winter, 2010. "Why Does Height Matter for Educational Attainment? Evidence from German Pre-Teen Children," CESifo Working Paper Series 2983, CESifo.
- Emiliana Vegas & Lucrecia Santibáñez, 2010. "The Promise of Early Childhood Development in Latin America and the Caribbean," World Bank Publications, The World Bank, number 9385, September.
- Emiliana Vegas & Lucrecia Santibáñez, 2010. "The Promise of Early Childhood Development in Latin America and the Caribbean," IDB Publications (Books), Inter-American Development Bank, number 60298, February.
- Azuara, Oliver, 2011. "Effect of universal health coverage on marriage, cohabitation and labor force participation," MPRA Paper 35074, University Library of Munich, Germany.
- Dumas Christelle & Lefranc Arnaud, 2010. "Early schooling and later outcomes : Evidence from pre-school extension in France," THEMA Working Papers 2010-07, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.
- Christelle Dumas & Arnaud Lefranc, 2012. "Early schooling and later outcomes : Evidence from pre-school extension in France," Post-Print hal-02528291, HAL.
- Ylenia Brilli, 2022. "Mother’s Time Allocation, Childcare, and Child Cognitive Development," Journal of Human Capital, University of Chicago Press, vol. 16(2), pages 233-272.
- Brilli, Ylenia, 2015. "Mother's Time Allocation, Child Care and Child Cognitive Development," Economics Working Papers MWP2015/03, European University Institute.
- Brilli, Ylenia, 2017. "Mother’s Time Allocation, Child Care and Child Cognitive Development," Working Papers in Economics 695, University of Gothenburg, Department of Economics.
- Ylenia Brilli, 2017. "Mother's Time Allocation, Child Care and Child Cognitive Development," CHILD Working Papers Series 59 JEL Classification: D1, Centre for Household, Income, Labour and Demographic Economics (CHILD) - CCA.
- Ylenia Brilli, 2021. "Mother's time allocation, child care and child cognitive development," Working Papers 2021: 30, Department of Economics, University of Venice "Ca' Foscari".
- Coneus, Katja & Laucht, Manfred & Reuß, Karsten, 2012. "The role of parental investments for cognitive and noncognitive skill formation—Evidence for the first 11 years of life," Economics & Human Biology, Elsevier, vol. 10(2), pages 189-209.
- Karsten Reuss & Manfred Laucht & Katja Coneus, 2010. "The Role of parental investments for cognitive and noncognitive skill formation – Evidence for the first 11 years of life," Investigaciones de Economía de la Educación volume 5, in: María Jesús Mancebón-Torrubia & Domingo P. Ximénez-de-Embún & José María Gómez-Sancho & Gregorio Gim (ed.), Investigaciones de Economía de la Educación 5, edition 1, volume 5, chapter 2, pages 47-66, Asociación de Economía de la Educación.
- Coneus, Katja & Laucht, Manfred & Reuß, Karsten, 2010. "The role of parental investments for cognitive and noncognitive skill formation: Evidence for the first 11 years of life," ZEW Discussion Papers 10-028, ZEW - Leibniz Centre for European Economic Research.
- Thiel, Hendrik & Thomsen, Stephan L., 2013. "Noncognitive skills in economics: Models, measurement, and empirical evidence," Research in Economics, Elsevier, vol. 67(2), pages 189-214.
- Thiel, Hendrik & Thomsen, Stephan L., 2009. "Noncognitive skills in economics: Models, measurement, and empirical evidence," ZEW Discussion Papers 09-076, ZEW - Leibniz Centre for European Economic Research.
- Hendrik Thiel & Stephan L. Thomsen, 2009. "Noncognitive Skills in Economics: Models, Measurement, and Empirical Evidence," FEMM Working Papers 09037, Otto-von-Guericke University Magdeburg, Faculty of Economics and Management.
- Thiel, Hendrik & Thomsen, Stephan L., 2011. "Noncognitive skills in economics: Models, measurement, and empirical evidence," ZEW Discussion Papers 09-076 [rev.], ZEW - Leibniz Centre for European Economic Research.
More about this item
Keywords
Life satisfaction; subjective well-being; mothers; children; child development; skill formation; instrumental variable;
All these keywords.JEL classification:
- J13 - Labor and Demographic Economics - - Demographic Economics - - - Fertility; Family Planning; Child Care; Children; Youth
- I22 - Health, Education, and Welfare - - Education - - - Educational Finance; Financial Aid
NEP fields
This paper has been announced in the following NEP Reports:- NEP-HAP-2010-01-10 (Economics of Happiness)
Lists
This item is featured on the following reading lists, Wikipedia, or ReplicationWiki pages:Statistics
Access and download statisticsCorrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:diw:diwsop:diw_sp242. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Bibliothek (email available below). General contact details of provider: https://edirc.repec.org/data/sodiwde.html .
Please note that corrections may take a couple of weeks to filter through the various RePEc services.