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題名:核保利潤之實證研究:以美國市場為例
作者:姜世杰
作者(外文):Shi-jie Jiang
校院名稱:淡江大學
系所名稱:財務金融學系博士班
指導教授:聶建中
周國端
學位類別:博士
出版日期:2007
主題關鍵詞:核保利潤核保循環自我相關分配延遲模型Property-Liability InsuranceUnderwriting CycleARDL analysis
原始連結:連回原系統網址new window
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本研究的目的在於探討核保利潤的決定因素、長期均衡關係與動態調整過
程。由於核保利潤、綜合率以及承保能量代理變數具有單根於否的疑問在以往文
獻及研究中無法獲得澄清,此一時間數列的受限性質導致有關長期效果的假說一
直無法受到證實,本文應用單變數以及縱橫資料分析的自我相關分配延遲模型以
及條件誤差修正模型,克服了變數間同時存在I(0)及I(1)整合齊次不一致的問
題,並且給出了單一方向性核保利潤與相關變數間的均衡關係,更加明確的探討
了攸關核保利潤的相關假說,此一計量方法可以進一步的釐清核保利潤與相關變
數之間的因果關係,並且更加了解保險市場的結構及運行機制。本文採取半世紀
以來美國保險市場的經營狀況,同時以整體產業及個別險種分別進行探討,實證
結果明確顯示出經濟定價假說的成立,而清楚的排除了過去研究中所提及的理性
預期假說及承保能量受限假說,而核保利潤之動態行為、實務上所稱之核保循環
可以條件誤差修正行為解釋而不須以過去研究中常用之二階自我相關過程建
模,增進了統計估計的效率性,個別險種的長尾特徵與監理措施可以調整速度的
快慢於否清晰詮釋,保險公司風險規避的性質亦獲得證實,在縱橫資料分析中本
文亦給出了有關盈餘配置不必要性假說的實證結果,而在投資行為與承保行為的
自我相關分配延遲模型分析中,除了火災、車體碰撞損失以及內陸航運險種外,
投資行為與承保行為的替換效果是明顯的,特別是長尾商業責任險種,此一實證
結果提供了現金流量核保存在的有利證據。
This study investigates the U.S. insurance market, both in industry level and
individual lines, from year 1950 to 2004 and provides a series of solid evidences,
supporting the economic pricing hypothesis sustained. The long run cointegration
relationships relevant to underwriting profits which are previously prohibited to
illustrate due to its stationary characteristic has been validated. Rather than structured
by predetermined second-order process, the visible cyclical pattern of underwriting
profits could be explained reasonably by the tendency back to the long run
equilibrium. Under both individual and panel versions of ARDL modeling, we also
find that the speeds back to the long run equilibrium are correspondent with the tails
or regulative characteristics of various insurance lines, which provide more supportive
evidences than Haley’s (1995). Furthermore, the results of panel ARDL analysis also
demonstrate grounds to support the implications of Philips et al. (1998), which
advocate that the actuarial routine of surplus allocation is not necessary. The
statutorily mandated forces and regulations keep the insurance rates lower and more
stable, making the economic pricing hypothesis to be no longer valid for some
stringently regulated long-tails lines such as Privative Passengers auto liability
insurance. Besides, a tendency towards tradeoff between investment and underwriting
activities has also been ascertained. Such relationship exists in whole industry level
(all lines combined) and most individual lines apart from the lines of fire, auto
physical damage and inland marine. For the lines with long tails, such tradeoff effect
has been magnified due to more time lags between premiums receiving and the claims
payment paying. Overall empirical evidences substantially suggest that the supply
effect, which could be reflected by the pricing strategies of risk-averse insurance
companies, tends to dominate U.S. insurance markets for the last half century.
Bahmani-Oskooee, M. and M. T. Bohl, 2000. German Monetary Unification and the
Stability of the German M3 Money Demand Function, Economics Letters, 66,
203-208.
Boswijk, P. 1992, Cointegration, Identification and Exogeneity: Inference in
Structural Error Correction Models. Tinbergen Institute Research Series.
Boswijk, HP. 1995, Efficient Inference on Cointegration Parameters in Structural
Error Correction Models, Journal of Econometrics 69: 133–158.
Cagle, J.A. and S. E. Harrington, 1995, Insurance Supply with Capacity Constraints
and Endogenous Insolvency Risk. Journal of Risk and Uncertainty 11:219-232.
Cavanagh CL, Elliott G, Stock JH. 1995. Inference in Models with Nearly Integrated
Regressors, Econometric Theory, 11: 1131–1147.
Choi, Sengmook, Hardigree, D. and P. D. Thistle, 2002 The Property-Casualty
Insurance Cycle: a Comparison of Alternative Models. Southern Economic
Journal 68:530-548
Cummins, D. and F. Outreville,. 1987. An International Analysis of Underwriting
Cycles in the Property-Liability Insurance. Journal of Risk and Insurance
54:246-262.
Cummins, D. and, P. M. Danzon, 1997, Price, Financial Quality and Capital Flows in
Insurance Markets. Journal of Financial Intermediation, 6: 3-38.
Cummins, D. and D. W. Sommer, 1996, Capital and Risk in Property-Liability
Insurance Markets, Journal of Banking and Finance, 20: 1069-1092
Doherty, N. A. and H. Kang, 1995, Interest Rates and the Insurance Price Cycle,
Journal of Banking and Finance, 12: 199-215.
Doherty, N.A. and J. Garven, 1995, Insurance Cycles: Interest Rates and the
Capacity Constraint Hypothesis, Journal of Business, 68: 383-404.
Feldblum, Shalom, 1990, Risk Loads for Insurers, Proceedings of the Casualty
Actuarial Society LXXVII: 160-195.
Feldblum, Sholom, 1992, Underwriting Cycles and Insurance Solvency, Insurer
Financial Solvency, Casualty Actuarial Society Discussion Paper Program, 1,new window
383 – 438.
Fung, H.G., G.. Lai, G.. A. Patterson, and R.C. Witt, 1998, Underwriting Cycles in
Property-Liability Insurance: An Empirical Analysis of Industry and By-Line
Data, Journal of Risk and Insurance, 65: 539 -562.
Grace, M. F. and J. Hotchkiss, 1995, External Impacts on the Property-Casualty
Insurance Cycle. Journal of Risk and Insurance, 62:110-127.
Gron, A. 1994 a., Capacity Constraints and Cycles in Property-Casualty Insurance
Markets, Rand Journal of Economics, 25:110-127.
Gron, A. 1994 b., Evidence of Capacity Constraints in Insurance Markets, Journal of Low and Economics, 37:349-377
Haley, J., 1993, A Cotintegration Analysis of the Relationship between Underwriting
Margins and Interest Rates: 1930-1989, Journal of Risk and Insurance
60:480-493
Haley, J., 1995, A By-Line Cointegration Analysis of Underwriting Margins and
Interest Rates in the Property-Liability Insurance Industry, Journal of Risk and
Insurance, 62: 755-63.
Harrington, S. E. and Patricia .M. Danzon, 1994.Price Cutting in Liability Insurance
Markets. Journal of Business 67:511-538.
Harrington, S. E. and G. Niehaus, 2000, Volatility and Underwriting Cycle,in Geoges
Dionne,ed., The Handbook of Insurance Economics, Boston; Kluwer Acadamic.
Harrington, S. E. and T. Yu, 2003, Do Property and Liability Insurance Underwriting
Margins Have Unit Roots?, Journal of Risk and Insurance, 70:735-753
Higgins, M. and P. Thistle, 2000, Capacity Constraints and the Dynamics of
Underwriting Profits, Economic Inquiry, 38:442-457
Johansen, S., 1988, Statistical Analysis of Cointegration Vectors and Dynamics and
Control, Journal of Econometrics, 12: 231-254
Kim, K. H. (1998). US Inflation and the Dollar Exchange Rate: a Vector Error
Correction Model, Applied Economics, 30:613-619.
Lamm-Tennant, J. and M. Weiss, 1997.International Insurance Cycles: Rational
Expectations/institutional Intervention. Journal of Risk and Insurance, 64:
415-439
Leland, H. 1972, Theory of the Firm Facing Uncertainty Demand, American
Economic Review, 62: 278-291
Leng, C. C., M. R. Powers and E. C. Venezian, 2002, Did Regulation Change the
Competitiveness in Property-Liability Insurance? Evidence from Underwriting
and Investment Income, Journal of Insurance Regulation, 22, 57-77.
Leng, C. C. and E. C. Venezian, 2003, Underwriting Profits: Are the Data Consistent
with "Rationally Priced" Insurance Cycles? Assurances et Gestion des Risques,
71: 435-454
Niehaus, G. and A. Terry, 1993, Evidence on the Time Series Properties of
Insurance Premiums and Causes of the Underwriting Cycle: New Support for
the Capital Market Imperfection Hypothesis, Journal of Risk and Insurance, 60:
466-479.
Pesaran, M. H., and R. J. Smith., 1995, Estimating Long-Run Relationships from
Dynamic Heterogeneous Panels, Journal of Econometrics, 68: 79-113.
Pesaran MH, and B. Pesaran, 1997, Working with Microfit 4.0: Interactive
Econometric Analysis, Oxford University Press: Oxford.
Pesaran, M. H., Y. Shin, and R. J. Smith., 1999, Pooled Mean Group Estimation of
Dynamic Heterogeneous Panels, Journal of the American Statistical Association,
94: 621–34.
Pesaran, M. H., Y. Shin, and R. J. Smith., 2001, Bounds Testing Approaches to the
Analysis of Long-Run Relationship, Journal of Applied Econometrics, 16:
289-326
Phillips, R.D., Cummins, D. and F. Allen, 1998, Financial Pricing of Insurance in the
Multiple-Line Insurance Company, Journal of Risk and Insurance, 65: 597-636
Sandmo, A. 1971, On the Theory of Competitive Firm under Price Uncertainty,
American Economic Review, 61: 65-73
Winter, R., 1988, The Liability Crisis and The Dynamics of Competitive Insurance
Markets, Yale Journal on Regulation, 5:455-499
Winter, R., 1991, Solvency Regulation and the Property-Liability Insurance Cycle,
Economic Inquiry, 29: 458-471
Winter, R., 1994, The Dynamics of Competitive Insurance Markets, Journal of
Financial Intermediation, 3: 379-415.
 
 
 
 
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