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    Contest between David and Goliath
    Yong-Ju Lee
    Pages 149-163
  • Abstract ( Eng | Kor ) || PDF
    •    This paper considers a model of contest between two asymmetric agents in which reputation effects work in different directions. If David wins, he gains substantial fame, and he has nothing to lose but his effort even if he loses. By contrast, it is just a natural outcome for Goliath to win, but if he loses, then he faces substantial shame. We characterize the conditions for a unique pure-strategy Nash equilibrium and conduct comparative statics to examine how efforts and expected payoffs respond to variations in contest parameters. From this analysis, we understand the structure of interactions between fame, shame, ability, and effort in the contest.
    • ´ÙÀ­°ú °ñ¸®¾ÑÀÇ °æÀï
      ÀÌ¿ëÁÖ


         º» ³í¹®Àº °æ±âÀÚ°£ÀÇ ÆòÆÇÈ¿°ú°¡ ´Ù¸¥ ¹æÇâÀ¸·Î ÀÛ¿ëÇÏ´Â ºñ´ëĪÀû °æÀïÀ» ¸ðÇüÈ­ÇÑ´Ù. ´É·ÂÀÌ µÚÃÄÁö´Â ´ÙÀ­ÀÇ °æ¿ì, °æÀï¿¡¼­ ½Â¸®ÇÏ¸é ¾öû³­ ¸í¼ºÀ» ¾ò°Ô µÇÁö¸¸ Áö´õ¶óµµ ÀÒÀ» °ÍÀÌ °ÅÀÇ ¾ø´Ù. ¹Ý¸é, °ñ¸®¾ÑÀÇ °æ¿ì, À̱â´Â °ÍÀº ´ç¿¬ÇÑ °á°ú·Î ¿©°ÜÁöÁö¸¸, ¸¸¾à Áö°Ô µÇ¸é ¾öû³­ Ä¡¿å¿¡ Á÷¸éÇÏ°Ô µÈ´Ù. º» ³í¹®Àº ÀÌ·¯ÇÑ ºñ´ëĪÀû »óȲ¿¡¼­ À¯ÀÏÇÑ ¼ø¼öÀü·« ³»½¬±ÕÇüÀÌ Á¸ÀçÇÏ°Ô µÇ´Â Á¶°ÇÀ» ±¸ÇÏ°í, ºñ±³Á¤ÇÐÀ» ÅëÇØ ÆĶó¹ÌÅÍÀÇ º¯È­¿¡ µû¸¥ ³ë·Â¼öÁØ°ú ±â´ëÈ¿¿ëÀÇ º¯È­¸¦ »ìÆ캻´Ù. ÀÌ·¯ÇÑ ºÐ¼®À» ÅëÇØ ¸í¼º, ´É·Â, Ä¡¿å°ú ³ë·Â¼öÁØ°£ÀÇ »ó°ü°ü°è ±¸Á¶¸¦ Á÷°üÀûÀ¸·Î ÀÌÇØÇÏ°Ô µÈ´Ù.
    ºñÁ¤»ó ¿ÀÂ÷Ç×À» °®´Â ¿¬¼Ó½Ã°£¸ðÇü ȸ±ÍºÐ¼®°ú ÁÖ°¡Áö¼ö µ¿Á¶È­
    Á¤¹Î¼ö
    Pages 165-197
  • Abstract ( Eng | Kor ) || PDF
    • Continuous-time Regression with Nonstationary Error and the Comovement of Stock Indices
      Minsoo Jeong


         We study the asymptotic properties of the continuous-time regression in the presence of nonstatioinary error. Choi, Hu and Ogaki (2008) have already well studied the case of I(1) processes in discrete time. However, contrary to I(1) processes, there arise a variety of situations when the model is in continuous time. In continuous-time regression, we verify that both the OLS (ordinary least squares) and GLS (generalized least squares) estimators may or may not achieve the consistency, depending on the property of the processes. We establish detailed conditions for the consistency of the estimators in each case. Furthermore, we apply our regression model to the stock indices of Korea and the US, to show that the cointegration or return analysis may not fully characterize the comovement of the stock indices.
    •    º» ¿¬±¸¿¡¼­´Â ¿¬¼Ó½Ã°£ ȸ±Í¸ðÇü¿¡¼­ ¿ÀÂ÷Ç×ÀÌ Á¤»ó¼º(stationarity)À» °®Áö ¾Ê´Â °æ¿ìÀÇ ÃßÁ¤·®¿¡ ´ëÇØ ºÐ¼®ÇÑ´Ù. ÀÌ»ê½Ã°£ I(1) °úÁ¤ÀÇ °æ¿ì ÀÌ¹Ì Choi, Hu and Ogaki(2008)¿¡¼­ ´Ù·ç¾úÁö¸¸, ¿¬¼Ó½Ã°£ ¸ðÇüÀº ´Ü¼øÇÑ I(1)À» ±âÁØÀ¸·Î ºÐ¼®ÇÑ °á°ú¿Í´Â ´Ù¸£°Ô ¸ðÇüÀÇ Æ¯¼º¿¡ µû¶ó »óÀÌÇÑ °á°úµéÀÌ ´Ù¾çÇÏ°Ô ³ªÅ¸³­´Ù. ¿¬¼Ó½Ã°£ ¸ðÇüÀº ÀÌ»ê½Ã°£ ¸ðÇü°ú´Â ´Þ¸® Á¶°Ç¿¡ µû¶ó OLS(ordinary least squares) ÃßÁ¤·®ÀÌ ÀÏÄ¡¼º(consistency)À» °®±âµµ ÇÏ°í GLS(generalized least squares) ÃßÁ¤·®ÀÌ ºñÀÏÄ¡¼ºÀ» °®´Â °æ¿ìµµ Á¸ÀçÇÏ°Ô µÇ´Âµ¥, º» ¿¬±¸¿¡¼­´Â µÎ ÃßÁ¤·®ÀÌ ÀÏÄ¡¼ºÀ» Áö´Ò Á¶°ÇÀ» °¢°¢ µµÃâÇÏ°í °¢ Á¶°ÇµéÀÇ Àǹ̸¦ »ìÆ캻´Ù. ¶ÇÇÑ Çѱ¹°ú ¹Ì±¹ÀÇ ÁÖ°¡Áö¼ö µ¿Á¶È­ ºÐ¼®¿¡ º» ¿¬±¸ÀÇ È¸±Í¸ðÇüÀ» Àû¿ëÇÏ¿©, ±âÁ¸ÀÇ °øÀûºÐ(cointegration) ºÐ¼®À̳ª ¼öÀÍ·ü¸ðÇü ºÐ¼®Àº ½Ã°è¿­ÀÇ Ãß¼¼ÀûÀÎ ¿¬°ü¼ºÀ» ¼³¸íÇϴµ¥ ÃæºÐÇÏÁö ¾ÊÀ» ¼öµµ ÀÖÀ½À» º¸ÀδÙ.
    ¿ì¸®³ª¶ó °æ±âº¯µ¿¿¡¼­ ÅõÀÚÃæ°ÝÀÇ ¿ªÇÒ
    Àå±ÙÈ£
    Pages 199-240
  • Abstract ( Eng | Kor ) || PDF
    • Investment Shocks in Korea's Business Cycles
      Keunho Jang


         This paper reinvestigates the role of investment shocks in accounting for business cycles based on the model of Justiniano, Primiceri, and Tambalotti (2011) and analyzes them empirically using post-2000 Korea's data. Estimation results show that shocks to marginal efficiency of investment play much more important roles rather than investment-specific technology shocks reflecting real factors. Due to frictions such as countercyclical price markup, shocks to marginal efficiency of investment successfully generate co-movements between endogenous variables such as output, consumption, investment and hours, and their impacts on business cycles are greatly amplified as well. Meanwhile, estimated shocks to marginal efficiency of investment are correlated with both firms' financing conditions and financial and foreign exchange market conditions. Hence, it is inferred that a significant part of business cycles in Korea is attributal to financial conditions influencing firms' investments for the post-2000 era.
    •    º»°í¿¡¼­´Â ±âÁ¸ÀÇ °æÇèÀû ¿¬±¸¿¡¼­ Á¦ÇÑÀûÀ̶ó°í ¾Ë·ÁÁ® ¿Ô´ø °æ±âº¯µ¿¿¡¼­ÀÇ ÅõÀÚÃæ°ÝÀÇ ¿ªÇÒÀ» Justiniano, Primiceri, and Tambalotti(2011)ÀÇ ¸ðÇü¿¡ ±Ù°ÅÇؼ­ Àç°ËÁõÇÏ°í 2000³â ÀÌÈÄ Çѱ¹ ÀڷḦ ÅëÇØ ½ÇÁõºÐ¼®À» ÇÏ¿´´Ù. ¸ðÇüÀÇ ÃßÁ¤°á°ú, ½Ç¹°Àû ¿äÀÎÀÇ ÅõÀÚƯÀ¯±â¼úÃæ°Ýº¸´Ù´Â ÅõÀÚÇÑ°èÈ¿À²Ãæ°ÝÀÇ °æ±âº¯µ¿¿¡¼­ÀÇ ¿ªÇÒÀÌ Å©°Ô ³ªÅ¸³µ´Ù. °æ±â¿ªÇàÀû °¡°Ý¸¶Å©¾÷ µî ¸¶Âû¿äÀÎÀ¸·Î ÀÎÇØ ÅõÀÚÇÑ°èÈ¿À²Ãæ°ÝÀº »ý»ê, ¼Òºñ, ÅõÀÚ, ³ëµ¿½Ã°£ µî ³»»ýº¯¼öµéÀÇ °øÇ༺À» Àß ³ªÅ¸³»¸ç µ¿ Ãæ°ÝÀÌ °æ±âº¯µ¿¿¡ ¹ÌÄ¡´Â ¿µÇâ·Âµµ Å©°Ô ÁõÆøµÇ´Â °ÍÀ¸·Î µå·¯³µ´Ù. ÇÑÆí, ÅõÀÚÇÑ°èÈ¿À²Ãæ°ÝÀº ±â¾÷ÀÇ Â÷ÀÔ¿©°Ç, ±ÝÀ¶?¿Üȯ½ÃÀå »óȲ°ú °ü·ÃÀÌ ³ôÀº °ÍÀ¸·Î µå·¯³µ´Ù. µû¶ó¼­ 2000³â ÀÌÈÄ ¿ì¸®³ª¶óÀÇ °æ±âº¯µ¿Àº ±â¾÷ÀÇ ÅõÀÚ¿¡ ¿µÇâÀ» ÁÖ´Â ±ÝÀ¶¿©°ÇÀÇ º¯È­¿¡ Å©°Ô ±âÀÎÇÑ °ÍÀ¸·Î À¯ÃßÇÒ ¼ö ÀÖ´Ù.
    ÁÖÅð¡°Ý°ú °¡°èºÎä°¡ ¼Òºñ¿¡ ¹ÌÄ¡´Â ¿µÇâ
    Á¶°©Á¦
    Pages 241-268
  • Abstract ( Eng | Kor ) || PDF
    • The Effects of House Price and Household Debt on Consumption
      Gab-Je Jo


         This paper empirically investigates the effects of interaction between house price and household debt on household consumption in Korea, using macroeconomic data for 2003-2015. I have utilized the cointegration test, the vector error correction analysis, the Granger causality test, the impulse response function and the variance decomposition test. The estimation results showed that, in the situation of high household debt, there was significant negative effect of house price on consumption. These results suggest that ¡®wealth effect¡¯, which means the rise in house price lift household consumption, is not found when the ratio of household debt to income is high.
    •    º» ¿¬±¸¿¡¼­´Â 2003-2015³â ±â°£ÀÇ °Å½ÃÀû ½Ã°è¿­ ÀڷḦ È°¿ëÇÏ¿© ÁÖÅð¡°Ý°ú °¡°èºÎä°¡ º¹ÇÕÀûÀ¸·Î °¡°è¼Òºñ¿¡ ¹ÌÄ¡´Â Àå´Ü±âÀû ¿µÇâ¿¡ °üÇÏ¿© ½ÇÁõºÐ¼®ÇÏ¿´´Ù. À̸¦ À§ÇØ °øÀûºÐ ºÐ¼®°ú º¤ÅÍ¿ÀÂ÷¼öÁ¤¸ðÇü¿¡ ÀÇÇÑ Granger Àΰú°ü°è, Ãæ°Ý¹ÝÀÀÇÔ¼ö ¹× ºÐ»êºÐÇغм®À» È°¿ëÇÏ¿´´Ù. ºÐ¼®°á°ú, °¡°èºÎä°¡ ¼Òµæ ´ëºñ ³ôÀº »óȲ¿¡¼­´Â ÁÖÅð¡°ÝÀÇ »ó½ÂÀº Àå´Ü±âÀûÀ¸·Î °¡°è¼ÒºñÀÇ Áõ°¡¸¦ À§Ãà½ÃÅ°´Â ÀÛ¿ëÀ» ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÀÌ·¯ÇÑ ºÐ¼®°á°ú´Â ÁÖÅð¡°ÝÀÇ »ó½ÂÀÌ °¡°è¼Òºñ¸¦ °ßÀÎÇÑ´Ù´Â ¡®ºÎÀÇ È¿°ú¡¯°¡ °¡°èºÎä°¡ ³ôÀº »óȲ¿¡¼­´Â ¹ß°ßµÇÁö ¾Ê´Â´Ù´Â ³í°Å¸¦ Á¦°øÇÑ´Ù.


The Korean Journal of Economics, Vol. 23, No. 2 (Autumn 2016)