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Non-technological innovation is an important element of firms' innovation activities that both supplement and complement technological innovation, i.e. the introduction of new products and new processes. We analyse the spread of nontechnological innovation in firms, their relation to technological innovation, and their effects to firm performance and success with product and process innovation, using data from the German Community Innovation Survey conducted in 2005 (German CIS 4). Non-technological innovation is defined as the introduction of new organisational methods or the introduction of new marketing methods. We find that the determinants of a firm's propensity to introduce technological and non-technological innovations are very similar and that both types are closely related. There are only small effects of non-technological innovation on a firm's profit margin, which contrasts the strong effects to be found from technological innovation. However, non-technological innovation spurs success with product and process innovation terms of sales with market novelties and cost reductions from new processes.

This paper provides a comprehensive demographic analysis of the family structure experiences of children in the U.S. Childbearing and transitions among co-residential union states defined by single, cohabiting, and married are analyzed jointly. A novel contribution is to distinguish men by their relationship to children: biological father or stepfather. This distinction is rarely made when analyzing union formation, but it is critical for understanding the family structure experiences of children. The analysis uses data from the 1979 cohort of the National Longitudinal Survey of Youth (NLSY79). The results are used to address the following issues: (1) What fraction of their childhood do children spend with the biological father, stepfathers, and no father? (2) How do these fractions vary by the mother's marital status at the time of the child's birth and at the time of the child's conception? (3) How do the family structure experiences of the children of white, black, and Hispanic mothers differ, and what are the proximate demographic determinants of these differences? A key finding is that children of black mothers spend on average only 34.1% of their childhood living with the biological father and mother, compared to 72.8% for whites and 64.1% for Hispanics. The two most important proximate demographic determinants of this large racial gap are the much higher propensity of black women to conceive children outside of a union, and the lower rate of "shotgun" unions for blacks compared to whites and Hispanics. Another notable finding is that cohabitation plays a negligible role in the family structure experiences of children of white and Hispanic mothers, and even for children of black mothers accounts for only one fifth of time spent living with both biological parents. Finally, we find that children of black, Hispanic, and white mothers spend similar proportions of their lives with stepfathers present, but this similarity masks a much higher stepfather "turnover" rate among blacks, who are more likely than the other groups to experience a larger number of shorter spells with different stepfathers.

This paper examines to what extent recent empirical evidence can collectively and systematically substantiate the claim that entrepreneurship has important economic value. Hence, a systematic review is provided that answers the question: What is the contribution of entrepreneurs to the economy in comparison to non-entrepreneurs? We study the relative contribution of entrepreneurs to the economy based on four measures that have most widely been studied empirically. Hence, we answer the question: What is the contribution of entrepreneurs to (i) employment generation and dynamics, (ii) innovation, and (iii) productivity and growth, relative to the contributions of the entrepreneurs' counterparts, i.e. the 'control group'? A fourth type of contribution studied is the role of entrepreneurship in increasing individuals' utility levels. Based on 57 recent studies of high quality that contain 87 relevant separate analyses, we conclude that entrepreneurs have a very important but specific function in the economy. They engender relatively much employment creation, productivity growth and produce and commercialize high quality innovations. They are more satisfied than employees. More importantly, recent studies show that entrepreneurial firms produce important spillovers that affect regional employment growth rates of all companies in the region in the long run. However, the counterparts cannot be missed either as they account for a relatively high value of GDP, a less volatile and more secure labor market, higher paid jobs and a greater number of innovations and they have a more active role in the adoption of innovations. -- Entrepreneur ; entrepreneurship ; self-employment ; productivity ; economic development ; growth ; employment ; innovation ; patents ; R&D ; utility ; remuneration ; income

What is the motivational effect of imposing a minimum effort requirement? Agents may no longer exert voluntary effort but merely meet the requirement. Here, we examine how such hidden costs of control change when control is considered legitimate. We study a principal-agent model where control signals the expectations of the principal and the agent meets these expectations because he is guilt-averse. We conjecture that control is more likely to be considered legitimate (i) if it is not exclusively aimed at a specific agent or (ii) if it protects the endowment of the principal. Given the conjecture, the model predicts that hidden costs are lower when one of the two conditions is met. We experimentally test these predictions and find them confirmed. -- Moral hazard ; intrinsic motivation ; guilt aversion

The Polish tax and benefit system is presented in the context of a recently developed microsimulation model, SIMPL. The model allows simulating direct taxes, social contributions and public benefits in Poland for the years 2003 and 2005. It is based on the Household Budgets Survey data (Badania Budzetów Gospodarstw Domowych) from 2003 and 2005. The document describes details of the Polish tax and benefit system and the simulation assumptions which were necessary in modelling it in SIMPL. We provide information on the quality of the data used in the model and some details of the validation process through various robustness checks. Finally we provide examples of application of the model for analysis of effects of policy reforms.

We study the intrapersonal relationship between trust and reciprocity in a laboratory experiment. Reciprocal subjects trust significantly more than selfish ones. This finding raises questions about theories of social preferences which predict that "fairer" players should trust less.