Comparing the True Cost of Living Indices of Demographically Different Households

The comparison of true cost of living indices between demographically different households (relative equivalence scale) is argued to be sensitive to the way demographic characteristics enter demand analysis. In particular, parameters reflecting the cost of demographic characteristics at base prices, though themselves do not have welfare (equivalence scale) interpretation, can alter the benchmark from which demographically varying inflation effects are measured. The empirical analysis, based on a rank‐3 demand system applied to UK individual household data, shows that the inflation adjustment of child benefits can vary with the way demographic costs at base period prices are specified.     

Gender bias in the spending of child benefits: evidence from a natural policy reform

We examine the causal relationship between child benefits and household spending on child and adult goods. In particular, we examine whether it matters if it is the husband or wife who controls this income transfer. We exploit the introduction of child benefits to families with at least four children. The law assigned the mother as the beneficiary but, when asked who collected the amount, one-third of beneficiary families reported the father as the recipient. We use the propensity score matching approach to assess the issue of possible self-selection of beneficiary families into answering who was the recipient parent and the results favour common support. We apply the difference-in-difference approach and find evidence in favour of a gender bias in the spending of child benefits. On average, after the reform, recipient families’ spending on child clothing, food and tobacco was significantly different from that of non-recipient families. Further analysis suggests that recipient families with the mother (father) in control of the amount spent more on child clothing and food (tobacco) relative to non-recipient families. The evidence has implications on the design of welfare programmes to benefit the children.     

On estimating the cost of characteristics indices from consumer demand analysis

Abstract.  We examine the information content of relative equivalence scales using a multiperiod framework and argue that in the absence of Independence of Base (IB) these scales can be uniquely identified from demand analysis only when the transformations of preferences through time are the same for all household types, a property termed as Intertemporally Invariant Base (IIB) utility. Restrictions imposed by IIB on conditional demands are tested empirically and found rejected within the context of a rank‐3 demand system applied to individual household data drawn from the U.K. Family Expenditure Survey 1970–86. Welfare implications of false IIB assumptions are also empirically investigated. JEL Classification: D1
A propos de l'estimation du coût des indices caractéristiques à partir de l'analyse de la demande des consommateur.  Ce mémoire examine le contenu informationnel des échelles d'équivalence relative en utilisant un cadre d'analyse sur plusieurs périodes, et suggère que, en l'absence d'une indépendance de la base (IB), ces échelles peuvent être identifiées d'une manière univoque seulement si les transformations de préférences dans le temps sont les mêmes pour tous les types de ménages. On nomme cette propriété utilité de base invariante dans le temps (IIB). Les restrictions vérifiables imposées par IIB sur les demandes conditionnelles sont vérifiées empiriquement et sont rejetées dans le contexte d'un système de demande de rang 3 appliqué aux données des ménages individuels dans une étude des dépenses des ménages de la Grande Bretagne 1970–86. Les implications de faux postulats IIB sont analysées empiriquement.     

Demographic versus expenditure flexibility in Engel curves

We consider the effects of demographic and expenditure variables on consumer demand in a system of Engel curves using a smooth coefficient semiparametric model where the expenditure effects on the budget shares vary nonparametrically with demographic variables such as the age of head and number of children in the household. Our findings, based on UK micro data, suggest that with a smooth coefficient semiparametric model there is no need for nonlinear logarithmic expenditure effects in the budget shares. Furthermore, we find evidence of a trade-off between demographic and expenditure effects in Engel curves and that a rank-2 system of Engel curves where the logarithmic expenditure effects are allowed to vary with demographic characteristics either nonparametrically or as a third degree polynomial function cannot be rejected against a rank-3 (quadratic logarithmic) model. The implications on household behavior and welfare are also examined. We would like to thank an anonymous referee and Baldev Raj, the editor, for useful comments and suggestions. We would also like to thank the University of Cyprus for financial support, Theofanis Mamuneas for stimulating discussions and the Office of National Statistics for making available the UK Family Expenditure Survey data through the ESRC Data Archive. The last author would also like to acknowledge the financial support from SSHRC of Canada.     

Marketing sustainability: Use of information sources and degrees of voluntary simplicity

The concept of voluntary simplicity (VS) is taken as a starting point to investigate consumers' use of information sources when making purchases of sustainable technological products and services. Differences in information seeking and sources consulted and trusted are investigated with a view to increasing the uptake of sustainable domestic technologies such as energy efficient fridges and washing machines over more grey alternatives. Clear patterns both in sources used and the information seeking process were found between different groups of consumers and priorities for purchase were also identified. The results suggest different strategies for marketing sustainable technologies to these different consumer groups.     

Dynamic analysis of British demand for tourism abroad

This paper investigates how preference endogeneity, in the form of habit persistence, can affect short-run and long-run tourism expenditure decisions. The proposed model is applied to British quarterly data over the period 1979–91 and the empirical results suggest that preference endogeneity appears to have an important effect. This has policy implications for countries competing for British tourist arrivals. The differences between the short-run and long-run price and budget elasticities which are implied by habit persistence are also investigated.     

COMPARISON OF ALTERNATIVE TAX AND TRANSFER TREATMENT OF CHILDREN USING ADULT EQUIVALENCE SCALES

This paper estimates adult equivalence scales in the context of a nonlinear demand system using cross-section individual household data. It then evaluates the treatment of children under the tax allowance and child benefit systems on the basis of the estimated equivalence scales. The results suggest that a child benefit system allowing for economies of scale in the family is consistent with the cost of children implied by the notion of adult equivalence scale.     

Age effects on consumer demand: an additive partially linear regression model

An additive partially linear regression model is used to estimate non-parametrically the effects of total expenditure and age in the context of Engel curves and to investigate the specification and welfare interpretation of the age effects in parametric models of consumer behaviour. Empirical analysis based on data drawn from the U.K. Family Expenditure Survey shows that modelling of the effects of age requires a more sophisticated approach than that generally adopted in parametric demand analysis. It also shows that failing to adequately capture these effects can have misleading welfare implications. JEL Classification: C14, D12
L'effet de l'âge sur la demande des consommateurs : un modèle de régression additif partiellement linéaire. On utilise un modèle de régression additif partiellement linéaire pour faire la calibration non paramétrique des effets de la dépense totale et de l'âge dans le contexte de courbes de Engel, et pour enquêter sur la spécification des effets d'âge et leur interprétation en termes de bien-être dans des modèles paramétriques de comportements du consommateur. L'analyse empirique est construite sur des données de la U.K. Family Expenditures Survey et montre que la modélisation des effets de l'âge réclame une approche plus sophistiquée que celle qui est généralement utilisée dans l'analyse paramétrique de la demande. On montre aussi que le manque à bien saisir ces effets peut conduire à des conclusions fausses pour ce qui est du niveau de bien-être.     

The impact of targeting policy on spouses’ demand for public goods,labor supplies and sharing rule

This paper studies the impact of targeted unconditional cash transfers on the spouses’ demand for public goods, labor supplies and sharing of resources. We estimate a collective labor supply model with distributional factors which is extended to include preferences over marketable public goods (including child goods). In this way, unlike previous research, we consider the impact of such transfers on the intrahousehold allocation of resources and distinguish between the labeling and recipient effects. We exploit the UK experience and find evidence in favor of the collective model with separable preferences over labor supplies and public goods. This finding implies a recipient effect and not a labeling effect of child benefits. Given the household’s unearned income, the bigger the wife’s bargaining power, the more the resources allocated to public goods (including child goods) and the wife’s private consumption. The results can be useful in the design of family policy which aims to improve the relative welfare of children within the family and alleviate any intrahousehold consumption inequalities.     

Comparing sustainable consumption patterns across product sectors

In this paper, we present findings from two qualitative studies where we explored sustainable consumption practices through examining consumers' information search and decision-making processes for recent purchases of five categories of goods/services: fast moving consumer goods (such as foodstuffs and household products), white goods (such as fridges and washing machines), small electrical products (such as TVs and computers), green energy tariffs (such as electricity from renewable sources) and tourism (such as flights). This research has provided us with a set of rich data which explores the nature and extent of sustainable consumption practices across different product sectors. A comparative analysis has allowed us to draw out patterns of consumer behaviour for different product and service types. Our findings suggest that even the same green consumer will not use the same information sources or decision-making criteria, consider the same options or focus on the same industry actors, for products in different sectors. However, we have identified some degree of consistency in purchases within sectors. We present these sector-specific patterns of consumer behaviour and highlight differences in the criteria utilized and the research norms in each sector.