Strategy-proofness on Euclidean spaces

 In this paper we characterize strategy-proof voting schemes on Euclidean spaces. A voting scheme is strategy-proof whenever it is optimal for every agent to report his best alternative. Here the individual preferences underlying these best choices are separable and quadratic. It turns out that a voting scheme is strategy-proof if and only if (α) its range is a closed Cartesian subset of Euclidean space, (β) the outcomes are at a minimal distance to the outcome under a specific coordinatewise veto voting scheme, and (γ) it satisfies some monotonicity properties. Neither continuity nor decomposability is implied by strategy-proofness, but these are satisfied if we additionally impose Pareto-optimality or unanimity. Received: 18 October 1993/Accepted: 2 February 1996     

Low-Income Mothers' Conversations About Emotions and Their Children's Emotional Competence

This study examined the linkage between low-income mothers' conversations about emotions and their children's understanding of emotion. Forty-five low-income preschoolers and their mothers were videotaped while viewing a wordless picture book designed to elicit talk about emotions. Three maternal and child emotional language behaviors were coded from the videotapes: (a) unelaborated comments about emotions; (b) explanations about the causes and consequences of emotions; and (c) empathy-related statements. The children's questions about emotions were also coded. In a separate interview, the preschoolers were administered tasks that assessed emotional expression knowledge, emotional situation knowledge, and emotional role-taking. The results revealed that emotional situation knowledge was positively predicted by mothers' empathy-related statements. Mothers' explanations about the causes and consequences of emotions were uniquely related to emotional role-taking ability. There were very few correlations between the mothers' and children's talk about emotions. Results are discussed in terms of the functional significance of mothers' emotional language for young children's emotional competence.     

The selection of zero-non-zero patterned cointegrating vectors in error-correction modelling

An effective and efficient search algorithm has been developed to select from an 1(1) system zero-non-zero patterned cointegrating and loading vectors in a subset VECM, B^q(l)y(t-1) + B^q-1 (L)Ay(t) = ε( t ) , where the long term impact matrix Bq(l) contains zero entries. The algorithm can be applied to higher order integrated systems. The Finnish money-output model presented by Johansen and Juselius (1990) and the United States balanced growth model presented by King, Plosser, Stock and Watson (1991) are used to demonstrate the usefulness of this algorithm in examining the cointegrating relationships in vector time series.     

CMHS/CSAT Collaborative Demonstration Program for Homeless Individuals

The Collaborative Demonstration Program for Homeless Individuals is providing an opportunity for several community agencies in the United States to explore innovative intervention and treatment strategies to address the needs of homeless people with co-occurring (mental illness and substance abuse) disorders. This cooperative agreement, funded jointly by the Center for Mental Health Services (CMHS) and the Center for Substance Abuse Treatment (CSAT), is a $3 million project supporting programs in various community agencies to develop, document, and evaluate programs for persons who are homeless with co-occurring disorders to be used as models in other communities. The program models include: Assertive Community Treatment, Psychosocial Rehabilitation, Therapeutic Community, and an integrated treatment model. The first phase of the two-phase project funded 16 programs in the U.S. to develop manuals within their primary treatment modalities for homeless people with co-occurring disorders. For Phase II of the project, six of the 16 model programs were competitively selected to demonstrate program impact through formal program evaluation efforts. The data derived from the various projects will be compiled into a compendium of information for state agencies and community service providers throughout the U.S.     

Reconstructing child welfare through participatory and child‐centred professional practice: a conceptual approach1

The ‘child’ in child welfare/protection is seen as a dependent waif and an object of interest, on whose behalf adults speak and act. An alternative perspective has argued for child‐centredness, and includes concepts of child liberation, rights and citizenship. Policymakers and practitioners who may accept the underlying principles may be concerned about the appropriateness and applicability of such principles in relation to practice with children and their parents in child welfare/protection cases. This paper discusses a conceptual framework for research that aims to explore participatory and child‐centred professional practice by critically evaluating and developing, for professional practice, the practical meanings of ‘participatory’ and ‘children as citizens’. We do not present research outcomes based on empirical data; instead, we present our conceptual framework as the first stage of research in progress into participatory and child‐centred professional practice.