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Abstrak :
[ABSTRAK
Penelitian ini membahas underreaction akibat bias konservatisme dan overreaction akibat representativeness heuristic terhadap informasi earning selama periode 2008-September 2014 pada Bursa Efek Indonesia. Metoda yang digunakan adalah menguji strategi membeli saham dengan pertumbuhan EPS tinggi dimasa lalu dan menjual saham dengan pertumbuhan EPS yang rendah , untuk periode: 4, 8, 12 kuartal dengan masa kepemilikan 3,6, 9, 12 bulan. Hasilnya menunjukkan bahwa ke 12 strategi tersebut tidak menghasilkan abnormal return positif secara statistik, bahkan satu strategi menghasilkan abnormal return negatif yang signifikan, yang mengindikasikan adanya representativeness heuristic.

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ABSTRACT
This study discusses underreaction stemming from the conservatism bias and overreaction due to the representativeness heuristic for earnings information during the period 2008-September 2014 on the Indonesia Stock Exchange. The method is examines trading strategies of buying past high EPS growth of stocks and selling past low EPS growth of stock, over 4, 8, 12 quarters with the holding period of 3.6, 9, 12 months. The results showed that all 12 of these strategies did not produce a statistically significant positive abnormal return, even one strategy generates significant negative abnormal returns, which indicate the presence of representativeness heuristic.;This study discusses underreaction stemming from the conservatism bias and overreaction due to the representativeness heuristic for earnings information during the period 2008-September 2014 on the Indonesia Stock Exchange. The method is examines trading strategies of buying past high EPS growth of stocks and selling past low EPS growth of stock, over 4, 8, 12 quarters with the holding period of 3.6, 9, 12 months. The results showed that all 12 of these strategies did not produce a statistically significant positive abnormal return, even one strategy generates significant negative abnormal returns, which indicate the presence of representativeness heuristic.;This study discusses underreaction stemming from the conservatism bias and overreaction due to the representativeness heuristic for earnings information during the period 2008-September 2014 on the Indonesia Stock Exchange. The method is examines trading strategies of buying past high EPS growth of stocks and selling past low EPS growth of stock, over 4, 8, 12 quarters with the holding period of 3.6, 9, 12 months. The results showed that all 12 of these strategies did not produce a statistically significant positive abnormal return, even one strategy generates significant negative abnormal returns, which indicate the presence of representativeness heuristic., This study discusses underreaction stemming from the conservatism bias and overreaction due to the representativeness heuristic for earnings information during the period 2008-September 2014 on the Indonesia Stock Exchange. The method is examines trading strategies of buying past high EPS growth of stocks and selling past low EPS growth of stock, over 4, 8, 12 quarters with the holding period of 3.6, 9, 12 months. The results showed that all 12 of these strategies did not produce a statistically significant positive abnormal return, even one strategy generates significant negative abnormal returns, which indicate the presence of representativeness heuristic.]

Abstrak :
Investor ritel di Indonesia mengalami kenaikan jumlah yang pesat selama 2020-2022, yang salah satunya diakibatkan oleh kemajuan teknologi dimana investasi ritel dapat diakses dengan mudah melalui berbagai aplikasi. Riset sebelumnya di negara berkembang seperti Indonesia, India dan Pakistan mengindikasikan bahwa terdapat pengaruh bias persepsi dalam pengambilan keputusan investasi. Dengan adanya fitur pada aplikasi seperti penyajian data historis, idealnya investor ritel dapat mengambil keputusan investasi yang lebih rasional. Penelitian ini menggunakan Partial Least Square Structural Equation Modeling (PLS-SEM) untuk menganalisis pengaruh bias perilaku overconfidence, representativeness dan loss aversion dalam pengambilan keputusan investasi yang rasional, dengan fitur aplikasi data historis harga saham/reksadana sebagai variabel yang memoderasi hubungan di antaranya. Hasil penelitian mengindikasikan bahwa bias perilaku overconfidence mempengaruhi pengambilan keputusan investasi rasional secara signifikan, sedangkan representativeness dan fitur aplikasi data historis tidak berpengaruh secara signifikan. Fitur aplikasi data historis tidak signifikan dalam memoderasi hubungan di antaranya. ......Retail investors in Indonesia have experienced a rapid increase during 2020-2022, one of which is due to advances in technology where retail investments can be accessed easily through various applications. Previous research in developing countries such as Indonesia, India and Pakistan indicated that there is influence of perception biases in investment decision making. However, with present investment application features such as presenting price historical data of stocks/mutual funds, ideally retail investors are able to make more rational investment decision. This study applies Partial Least Square Structural Equation Modeling (PLS-SEM) to analyze the influence of perception biases in making rational investment decisions. Price historical data as application feature acts as a variable that moderates the relationship between them. The result of this study indicates that overconfidence significantly influences rational investment decision making, while representativeness and historical data application features do not have a significant effect. Price historical data as application feature is also not significant in moderating the relationship between them.

Abstrak :
This paper looks at the nature of data for lexicography and in particular on the central role that electronic corpora can play in providing it. Data has traditionally come from existing dictionaries, citations, and from the lexicographer?s own knowledge of words, through introspection. Each of these is examined and evaluated. Then the electronic corpus is considered. Different kinds of corpora are described and key design criteria are explained, in particular the size of corpus needed for lexicography as well as the issue of representativeness and sampling. The advantages and disadvantages of corpora are weighed and compared against the other types of data. While each of these has benefits, it is argued that corpora are a requirement, not an option, as data for dictionary making.