The Economics of the Family
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Österreichisches Institut für Familienforschung Austrian Institute for Family Studies Nr. 45 | 2004 Norbert Neuwirth Astrid Haider The Economics of the Family A Review of the development and a bibliography of recent papers KONTAKT: [email protected] | +43-1-535 14 54-22 1 Abstract The paper provides an overview of the various strands of research within the Economics of the Family. Whereas traditional microeconomic analysis treats the household as a black box the New Home Economics approach by Becker/Gronau distinguishes between individuals, but family members have unitary preferences and therefore exhibit one unique, joint utility function. Within game-theoretic models of intra-family resource allocation – cooperative as non-cooperative games – the, generally different, individual preferences are determinants of all (possible) bargaining outcomes . The second part of the paper consists of a bibliography containing relevant recent papers sorted by the different approaches. Abstract - Deutsch Das Papier gibt einen Überblick über die verschiedenen Forschungsströmungen der Familienökonomik. Während die traditionelle Mikroökonomie den Haushalt als ‚Black Box’ behandelt, unterscheidet der Ansatz der ‚New Home Economics’ von Becker/Gronau zwischen Individuen innerhalb eines Haushaltes, weist diesen jedoch eine gemeinsame Nutzenfunktion, demnach auch einheitliche Präferenzen, zu. Bei – kooperativen wie nicht-kooperativen – spieltheoretischen Modellen intrafamiliärer Ressourcenallokation werden die unterschiedlichen individuellen Präferenzen als bestimmende Faktoren der (möglichen) Verhandlungsergebnisse behandelt. Der zweite Teil des Papiers besteht aus einer Bibliographie, die die wichtigsten jüngeren Papiere zu den oben erwähnten Strömungen erfasst. 2 The Economics of the Family Content 1 Introduction........................................................................................................................................................................ 4 2 Review: The evolution of “Family Economics” ............................................................................................... 4 2.1 Samuelson’s ‘Social Welfare Contours’...........................................................................................................................5 2.2 Resource allocation within the family...............................................................................................................................7 2.3 Home production ........................................................................................................................................................................7 2.4 Family decisions as a bargaining problem....................................................................................................................11 2.4.1 Basic idea.................................................................................................................................................................................12 2.4.2 Household decisions as a cooperative game....................................................................................................12 2.4.2.1 Comparison to traditional approaches.....................................................................................................13 2.4.2.2 Static model with time allocation ................................................................................................................15 2.4.3 Household decisions as a non-cooperative game .........................................................................................19 2.4.4 Collective models of household behaviour .......................................................................................................19 3 Bibliography: Developments in “family economics”.................................................................................. 22 3.1 Ancient developments that lead to New Home Economics..........................................................................22 3.2 New Home Economics: Altruistic dictators?...........................................................................................................25 3.3 Game theoretic approaches ...............................................................................................................................................46 3.4 The theory of collective activities ....................................................................................................................................66 3.5 Empirical tests and/or comparisons of the main types of theory.................................................................73 3.6 Time use analysis........................................................................................................................................................................82 3.7 Other empirical work in the field of family economics ......................................................................................89 3.8 General Equilibrium approaches....................................................................................................................................102 3.9 Handbooks, readers, surveys, collected editions.................................................................................................104 Literature....................................................................................................................................................................................105 3 The Economics of the Family 1 Introduction Questions about joint decision behaviour and resource distribution within households have been focused by economists for decades. Regretfully, these topics were often considered as not essential to economic analysis. Most textbooks in economics do not distinguish between market behaviour of individuals or households. The household’s welfare functions are assumed to have identical properties as individual’s utilities. Examining e.g. revealed preferences it does not matter whether the identified preference pattern corresponds to the genuine utility of the observed individual or to the agreed joint demand function of the household, but when modelling family dynamics and resource allocation over time, individuals’ and groups’ utility functions have to be separated analytically. The paper is divided in two parts: A review, where the main ideas of family economics are discussed and modelled, and a bibliography, where recent papers and books building their approaches on the seminal papers and ideas discussed in the review are cited and commented. ‘Recent’ works are defined as contributions that were published from 1990 on. Reviews of works before this period are well documented within the ‘Handbook of Population and Family Economics’1 published in 1997. Elder seminal papers (e.g. Chiappori (1989), Manser/Brown (1980) Becker (1965); Samuelson (1956) ) Existing Review Papers, Books and more „recent” approaches to family economics Recent Publications in (related areas of) family economics (~1989 – 2004) Figure 1: Research strategy for the bibliography Recent papers working on the models discussed are identified via literature research within EconLit, the Social Science Citation Index, JStore and ProQuest. The research strategy is straightforward: The (first round) thematic research is based on typical keywords like ‘new home economics’ or ‘collective labour supply’, then the citations of articles are compared with a list of seminal papers in the field of family economics. That way the evolution of family economic models within the last fifteen years can be reconstructed (Figure 1). Of course a bibliography like this can never be complete. Nevertheless, this work can be a modest contribution to the ongoing development of “family economics”. 2 Review: The evolution of “Family Economics” The review starts with a discussion on the existence of social indifference curves (chapter 2.1) that determined some later developments in this field, continues with the ‘New Home Economics’-approach by Becker/Gronau (chapter 2.2 to 2.3), and finally comes to game theoretic models of intra-family resource allocation (2.4). Here applications of the classical concepts of non-cooperative (2.4.3) and 1 Rosenzweig, M. R. and O. Stark (1997) "Handbook of Population and Family Economics"; Elsevier 4 The Economics of the Family cooperative (2.4.2) games will be discussed. One well known reduced-form epigone model of the cooperative approach, the so called ‘collective labour supply model’ that can be extended to all activities considered, will be discussed in (2.4.3). 2.1 Samuelson’s ‘Social Welfare Contours’ Formelabschnitt 1One of the first contributions regarding the dependence and characteristics of household's preferences was a seminal paper of Paul Samuelson (1956). Criticising broadly Scitovsky's2 attempt to build up social indifference curves for nations respectively large groups or communities within nations, Samuelson proved the non-existence of such social indifference functions as the groups' members are not in permanent personal contact. Instead - partly contradicting Scitovsky's approach - he developed a 'theory of social welfare contours' for families. Within this approach, Samuelson restricted resource reallocation to intra-family shifts in income. Personal preferences are described by a standard utility function where xi is a vector for all goods and services traded on markets. uuiii==()xxp st ..() i′ I i [1.1] The family's utility is defined as a weighting