Standard-Nutzungsbedingungen:Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden.Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen.Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. Terms of use: Documents in AbstractFirm productivity and export decision are closely related to its innovation activity. Product innovation may play a more important role in the decision to start exporting, while the decision for process innovation may be triggered by successful exporting. This suggests that the causality between innovation and exporting may run from product innovation to exporting and conesequently from exporting to process innovation and reverse productivity improvements. Using detailed microdata, including innovation survey, industrial production survey and information on trade, for Slovenian …rms in 1996-2002 we investigate this dual causal relationship between …rms'innovation and exporting activity. We …nd no evidence for the hypothesis that either product or process innovations increase the probability of becoming a …rst time exporter, but …nd consistent support both in the innovation survey as well as in the industrial production survey that exporting does lead to productivity improvements. These, however, are likely to be related to process rather than product innovations and are limited to a sample of medium and large sized …rst time exporters only.JEL classi…cation: D24, F14, F21

Standard-Nutzungsbedingungen:Die Dokumente auf EconStor dürfen zu eigenen wissenschaftlichen Zwecken und zum Privatgebrauch gespeichert und kopiert werden.Sie dürfen die Dokumente nicht für öffentliche oder kommerzielle Zwecke vervielfältigen, öffentlich ausstellen, öffentlich zugänglich machen, vertreiben oder anderweitig nutzen.Sofern die Verfasser die Dokumente unter Open-Content-Lizenzen (insbesondere CC-Lizenzen) zur Verfügung gestellt haben sollten, gelten abweichend von diesen Nutzungsbedingungen die in der dort genannten Lizenz gewährten Nutzungsrechte. Terms of use: Documents in Import Churning and Export Performance of Multi-Product Firms AbstractThis paper analyzes the impact of churning in the imported varieties of capital and intermediate inputs on firm export scope and productivity. Using detailed data on imports and exports at the firm-product-market level, we document substantial churning in both imports and exports for the Slovenian manufacturing firms in the period 1994-2008. On average, a firm changes about one quarter of imported and exported product-markets every year, while gross churning in terms of added and dropped product-markets is almost three times higher. A substantial share of this product churning is due to simultaneous imports and exports of firms in identical varieties within the same CN-8 product code (so called pass-on-trade). We find that churning in imported varieties is far more important than reduction in tariffs or declines in import prices for firms' productivity growth and increased export product scope. We also find that gross churning has a bigger impact on firm productivity improvements by a factor of more than 10 in comparison to the net churning. Both adding and dropping of imported input varieties thus seem to be of utmost importance for firms aiming to optimize their input mix towards their most valuable inputs. These effects are further enhanced when excluding the simultaneous trade in identical varieties, suggesting that pass-on-trade has less favorable effects on firms' long-run performance than regular trade. JEL: R10, R15

This paper documents that a large fraction of trade flows at the firm level consists of simultaneous imports and exports in identical products, narrowly defined at the 8-digit product classification, which we call Pass-On Trade, POT. We use data on imports and exports at the firm-product level for Slovenian manufacturing firms in the period 1994-2008, to show that, on average, 70 percent of all exporting firms engage in POT. This corresponds to more than 50 percent of all exported products. Thus, imported products that are exported again by the same firm is a statistical regularity of trade of Slovenian manufacturing firms. We document that the use of POT is increasing in firm size, product diversification, multinational status as well as firm productivity and profitability. We offer and explore empirically a number of explanations for POT. Among possible explanations, we find evidence on the importance of firms' multinational networks and demand complementarities between firms' own and POT products. The latter confirms the theoretical explanations for 'Carry-Along Trade' (CAT) as developed by the recent work of Bernard et al ( , 2012. JEL: R10, R15

In this paper, we propose an extension of the productivity decomposition method developed by Olley & Pakes (1996). This extension provides an accounting for the contributions of both firm entry and exit to aggregate productivity changes. It breaks down the contribution of surviving firms into a component accounting for changes in the firm-level distribution of productivity and another accounting for market share reallocations among those firms -following the same methodology as the one proposed by Olley & Pakes (1996). We argue that the other decompositions that break-down aggregate productivity changes into these same four components introduce some biases in the measurement of the contributions of entry and exit.We apply our proposed decomposition to the large measured increases of productivity in Slovenian manufacturing during the 1995-2000 period and contrast our results with those of other decompositions. We find that, over a 5-year period, the measurement bias associated with entry and exit is substantial, accounting for up to 10 percentage points of aggregate productivity growth. We also find that market share reallocations among surviving firms played a much more important role in driving aggregate productivity changes. AbstractIn this paper, we propose an extension of the productivity decomposition method developed by Olley & Pakes (1996). This extension provides an accounting for the contributions of both firm entry and exit to aggregate productivity changes. It breaks down the contribution of surviving firms into a component accounting for changes in the firm-level distribution of productivity and another accounting for market share reallocations among those firms -following the same methodology as the one proposed by Olley & Pakes (1996). We argue that the other decompositions that break-down aggregate productivity changes into these same four components introduce some biases in the measurement of the contributions of entry and exit.We apply our proposed decomposition to the large measured increases of productivity in Slovenian manufacturing during the 1995-2000 period and contrast our results with those of other decompositions. We find that, over a 5-year period, the measurement bias associated with entry and exit is substantial, accounting for up to 10 percentage points of aggregate productivity growth. We also find that market share reallocations among surviving firms played a much more important role in driving aggregate productivity changes.

In this article we analyze the effects of student work on academic performance for college students. In order to reduce the endogeneity bias due to selection into treatment, we use propensity score matching technique. This approach allows us to estimate the average treatment effects on the treated separately for different years of study, which is not possible when inside instruments are used to deal with endogeneity of student work. We find predominantly negative treatment effects for all measures of academic performance (GPA, exam attempts, exams passed, and likelihood of passing a year), although many of these are economically and statistically insignificant. We supplement existing studies that do not estimate separate treatment effects for different years of study by showing that work while in college harms study outcomes mostly in the first year of study-by passing smaller number of exams and thereby increasing the likelihood of failing a year. Our results are consistent with evidence on difficulty with adjusting to college studies of first-year students, who face many uncertainties that affect finding the optimal allocation of time between studies, work and leisure.