1,721,262 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Maternal Labour Supply and School Enrolment Laws: Empirical Evidence from Brazilian Primary School Reforms
No full textThe relationship between childcare provision and mothers’ labour supply decisions is highly debated due to the potential reverse causality and resultant empirical challenges. We contribute meaningfully to this debate by discussing the effects from a reform on Brazil’s primary education system on maternal labour supply.
This reform, which advanced the compulsory children’s enrolment in primary education schools from the age of 7–6, is interpreted as the provision of free childcare. Due to the imperfect compliance of the reform implementation, children’s month of birth is used as an instrumental variable to control for the endogeneity present in any actual school enrolment. We show that the reform presented a positive effect on the labour supply of (1) the Brazilian single mothers and (2) the
least educated mothers, increasing their participation in labour market by 12.9 % and furthermore a probability of becoming full time workers by 10.9 %
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