Produktivitas Penulis Artikel Majalah Ilmiah Psikologi Universitas Gadjah Mada Menggunakan Dalil Lotka

Study of authors productivity use Lotka’s Law has been done, there are some field of science that is physics, chemistry, library and information, social science and politics. The same study in the field of psychology, has not been done in Indonesia. Therefore this study aims to: (1) determine the productivity of authors of psychology, especially in the publication of scientific psychology published by the Fakultas Psikologi UGM, using the law of Lotka; (2) know the author who is productive in the two publications. This study uses a bibliometric approach, which is analized quantitatively using Lotka’s law. The results show that: (1) Authors productivity of Jurnal Psikologi by involving first writer (straight count) according to Lotka's law, that is Dmaks < critical point value. Conversely, if the calculation is done by involving all the authors (complete count) the results obtained are not in accordance with the Lotka’s law, because Dmax > critical point value. (2) Productivity of the author of Buletin Psikologi by involving the first author (straight count) the result shows that Dmax > the critical point value or not according to Lotka's law. Similarly, productivity by involving all authors is also inconsistent with Lotka's law because Dmax > the critical point. Other results indicate that Faturochman was the most prolific writer of the two scientific magazines