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Theory and Society - How do markets come about? This article offers a first systematic analysis of three different ideal types of market fashioning: mutual adjustment, organization, and fields....  相似文献   
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We study a factor analysis model with two normally distributed observations and one factor. In the case when the errors have equal variance, the maximum likelihood estimate of the factor loading is given in closed form. Exact and approximate distributions of the maximum likelihood estimate are considered. The exact distribution function is given in a complex form that involves the incomplete Beta function. Approximations to the distribution function are given for the cases of large sample sizes and small error variances. The accuracy of the approximations is discussed  相似文献   
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Using data from two representative surveys among the users of personal assistance in Norway carried out in 2002 and 2010, this paper examines developments and consequences of a strong increase of users and an extension of the target group. Users with mobility impairments still dominate, but the proportion of people with intellectual impairments, brain injuries, and sensory impairments have increased. The ‘new' users seem to be allocated fewer hours compared with those who received personal assistance at the early stages of the arrangement. Still, most users experience an increase in their welfare arrangements, as compared with the situation before they received personal assistance. The user control of the arrangement seems to be preserved, but it takes more different forms. For a higher proportion of users, one of their relatives or a guardian acts as a manager of the assistance.  相似文献   
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We identify the ages that constitute sensitive (or critical) periods in children's development towards their adult health status, skills, and human capital. For this, we use data on families migrating into Sweden from countries that are poorer, with less healthy conditions. Late‐life health is proxied by adult height and other adult outcomes. The relation between siblings’ ages at migration and their adult outcomes allows us to estimate the causal effect of conditions at specific childhood ages. We effectively exploit that, for siblings, the migration occurs simultaneously in calendar time but at different developmental stages (ages). We find evidence that the period just before the puberty growth spurt constitutes a critical period for adult height and we find related critical periods for adult cognition, mental health, and education.  相似文献   
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