Does Financial Sector Development Promote Industrialisation in Nigeria?
Does Financial Sector Development Promote Industrialisation in Nigeria?
1                                                                               ISSN 2307-227X
                           International Journal of Research In Social Sciences
                                © 2013-2014 IJRSS & K.A.J. All rights reserved
                                               www.ijsk.org/ijrss
Abstract
This paper examines the long run and causal relationship between financial sector development and
industrialization in Nigeria for the period 1981 to 2011 using time series data. Results from a multivariate VAR and
vector error correction model provide evidence of long run relationship between financial sector development and
industrialization in Nigeria. The two measures of financial development had contrasting effects on industrial output.
Ratio of private sector bank credit to GDP has a positive relationship with industrial output while the ratio of broad
money stock to GDP has a negative relationship with industrial output. Granger causality test reveals long-run
unidirectional causal link running from industrialization to financial development. There is therefore the urgent
need for government to consolidate on past financial sector reforms to address the challenges of financial
intermediation in the domestic financial sector to improve loan disbursement to the industrial sector of the Nigerian
economy.
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May. 2014. Vol. 4, No.1                                                                                  ISSN 2307-227X
                           International Journal of Research In Social Sciences
                                 © 2013-2014 IJRSS & K.A.J. All rights reserved
                                                www.ijsk.org/ijrss
  country has grown without industrializing”                         Okodua, 2013; Okodua & Ewetan, 2013; Mccaig &
  (UNIDO, 2009).                                                     Stengos, 2005; Beck & Levine, 2004; Levine,
          Industrialization is said to be a significant              Loayza, & Beck, 2000) offer strong and robust
  measure of modern economic growth and                              evidence supporting the view that both well-
  development but the Nigerian industrial sector has                 functioning banking systems and well developed
  suffered from decades of low productivity.                         stock markets independently spur economic
  Industrialization is generally argued as capable of                growth. That is, banking systems and stock markets
  increasing the pace of economic growth and                         provide different, but complimentary, growth-
  ensuring swift structural transformations of the                   enhancing financial services to the economy.
  economy. The critical role of the industrial sub-                          The extensive literature on the finance-
  sector is predicated on the fact that it acts as an                growth nexus reveals four possible scenarios on the
  engine of growth by broadening the productive and                  nature of the relationship between financial
  export base of the economy, reducing                               development and economic growth. These are
  unemployment and minimizing rural-urban drift as                   finance-led growth referred to as supply-leading
  well as helping to reduce poverty.                                 hypothesis, growth driven finance referred to as
          Despite the abundant natural and human                     demand-following       hypothesis,     bi-directional
  resources, Nigeria has failed to achieve industrial                relationship referred to as feedback, and no
  development. Several policies and reforms by                       relationship between financial development and
  various governments to turn around the industrial                  economic growth. Different techniques which
  sector have largely been unsuccessful as the                       include cross-country, panel, time series, country
  sectoral contribution of the industrial sector to the              specific, industry level, and case study-study
  gross domestic product has remain very low and                     analyses have been used to investigate the links
  insignificant.                                                     between financial development and economic
          Historically, economists accorded great                    growth (Levine, 1997, 2005; Aug, 2008; Beck,
  importance to the role of the financial sector in the              2009; Ewetan & Okodua, 2013; Akinlo &
  development of new markets and as catalyst for                     Egbetunde, 2004)
  industrialization      and     economic        growth                      Okodua and Ewetan (2013) examine the
  (Gerschenkron, 1962). Although the nexus between                   effects of stock market performance on economic
  financial development and economic growth has                      growth and find that in the long-run, overall output
  long been a subject of intense scrutiny, few studies               in the Nigerian economy is less sensitive to
  have examined the relationship between financial                   changes in stock market capitalization as well as
  development and industrialization as well as the                   the average dividend yield. On the contrary,
  direction of causality between financial                           Thumrongvit, Kim, and Pyun (2013) in a study on
  development and industrial production. This paper                  the effects of bond markets as a third key
  therefore attempts to investigate the links as well as             component of the financial system on economic
  the direction of causality between financial sector                growth find that government bonds positively
  development and industrialization in Nigeria.                      relate to economic growth, while the effects of
                                                                     corporate bonds change from negative to positive
  2.    Literature Review                                            as domestic financial structures expend in size and
                                                                     diversity. On the contrary Cecchetti and Kharroubi
  The relationship between financial development                     (2012), argue that more finance does not always
  and economic growth has been explored                              produce better outcomes, because the financial
  extensively in the literature. Theoretically,                      sector competes with the rest of the economy for
  financial intermediaries and financial markets                     scarce resources. They find that financial sector
  mitigate the costs of acquiring information,                       size exhibit an inverted U-shaped effect on
  enforcing contracts, and making transactions. The                  productivity growth. That is, further enlargement
  positive effects on growth occurs through changes                  of the financial system beyond a certain point can
  in the incentives and constraints facing economic                  reduce real growth
  agents, improved information flows, capital                                Considering firm’s access to external
  allocation, corporate governance, ameliorating risk,               finance, Demirguc-Kunt and Maksimovic (2002)
  pooling saving and easing exchange (Acemoglu &                     find that firms do not grow faster in either market-
  Zilibotti, 1997; Khan, 2001; King & Levine, 1993).                 based or bank-based financial systems. Thus, the
  Empirically both time series and cross-country                     overall level of financial development matters for
  studies (Alege & Ogunrinola, 2008; Ewetan &                        economic growth, rather than the development of a
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May. 2014. Vol. 4, No.1                                                                                    ISSN 2307-227X
                            International Journal of Research In Social Sciences
                                  © 2013-2014 IJRSS & K.A.J. All rights reserved
                                                 www.ijsk.org/ijrss
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May. 2014. Vol. 4, No.1                                                                                  ISSN 2307-227X
                           International Journal of Research In Social Sciences
                                 © 2013-2014 IJRSS & K.A.J. All rights reserved
                                               www.ijsk.org/ijrss
  variables. Theoretically, the InYtis expected to be               under study. The size and statistical significance of
  more than proportionately sensitive to marginal                   the coefficient of the error correction term in each
  variations in each of the explanatory variables                   ECM model measures the tendencies of each
  holding all other constant in each case.                          variable to return to the equilibrium. A significant
                                                                    coefficient implies that past equilibrium errors play
                                                                    a role in determining the current outcomes. The
  3.2 Model Estimation Technique                                    short run dynamics are captured through the
                                                                    individual coefficients of the difference terms. The
  In terms of econometric methodology, the                          short run dynamics are captured through the
  multivariate cointegration approach offers useful                 individual coefficients of the difference terms.
  insights towards testing for causal relationship. In              Financial development (FD) does not Granger
  principle, two or more variables are adjudged to be               cause economic growth (GY) if all               , and
  cointegrated when they share a common trend.                      Economic growth (GY) does not Granger cause
  Hence, the existence of cointegration implies that                financial development (FD) if all               = 0.
  causality runs in at least one direction. However                 According to Akinlo and Egbetunde (2010), and
  there could be exceptions to this expectation. The                Mehra, (1994) these hypotheses can be tested using
  cointegration and error correction methodology is                 standard F statistics.
  extensively used and well documented in the
  literature (Banerjee, et al. 1993; Johansen and
  Juselius, 1990; Johansen, 1988; Engle and Granger,                3.4 Stationarity Tests
  1987). Johansen (1988) multivariate cointegration
  model is based on the error correction                            There is the possibility of co-integration when each
  representation given by:                                          variable is integrated of the same order d 1. This
  ∆Xt = µ + ∑            ∆     +        +                           necessary, but rarely sufficient, condition implies
                                                   (6)              that the series share a common trend. Therefore to
   Where Xt is an (nx1) column vector of variables,                 ascertain whether mean reversion is characteristic
     is an (nx1) vector of constant terms, Г and Π                  of each variable the paper used both Augmented
  represent coefficient matrices, ∆ is a difference                 Dickey-Fuller (ADF) test by Dickey and Fuller
  operator, and −N(0,∑). The coefficient matrix Π                   (1979, 1981), and Phillip-Perron (PP) test by
  is known as the impact matrix, and it contains                    Phillips (1987) and Phillips Perron (1988) to infer
  information about the long-run relationships.                     the stationarity properties of the study series. This
  Johansen’s methodology requires the estimation of                 is conducted, with intercept only and intercept and
  the VAR equation (6) and the residuals are then                   trend respectively, on the levels and first difference
  used to compute two likelihood ratios (LR) test                   of the series.
  statistics that can be used in the determination of
  the unique cointegrating vectors of Xt. The
  cointegrating rank can be tested with two statistics,             3.5 Granger Causality Test
  the trace test and the maximal eigenvalue test.
                                                                    Granger causality tests are performed to find out
  3.3 Vector Error Correction Model (VECM)                          the direction of the causal link between financial
                                                                    development and economic growth. The Granger
  The error correction version pertaining to the six                causality approach measures the precedence and
  variables (Y, K, L, MCY, CPS, INT) used in the                    information provided by a variable (X) in
  study is stated below:                                            explaining the current value of another variable
  ∆Yt =α0 + ∑            1t∆Yt-1 + ∑       2t∆Kt-1 +
                                                                    (Y). The basic rationale of Granger causality is that
  ∑        ∆L      +∑      ∆MCY      +                              the change in financial sector development Granger
         3t    t-1       4t      t-1
                                                                    causes the change in economic growth if past
  ∑      5t∆CPSt-1 + ∑      6t∆INTt-1 + λ1ECMt-1 + εi
                                                  (7)               values of the change in financial sector
  Where ECMt-1 is the error correction term and is                  development improve unbiased least-square
  the mutually uncorrelated white noise residual. The               predictions about the change in economic growth.
  coefficient of the ECM variable contains                          The null hypothesis H0 tested is that X does not
  information about whether the past values of                      granger-cause Y and Y does not granger-cause X.
  variables affect the current values of the variable
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  May. 2014. Vol. 4, No.1                                                                                ISSN 2307-227X
                              International Journal of Research In Social Sciences
                                       © 2013-2014 IJRSS & K.A.J. All rights reserved
                                                   www.ijsk.org/ijrss
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May. 2014. Vol. 4, No.1                                                                                   ISSN 2307-227X
                           International Journal of Research In Social Sciences
                                 © 2013-2014 IJRSS & K.A.J. All rights reserved
                                                www.ijsk.org/ijrss
The trace statistic indicates the presence of two                 betweenindicators of financial sector development,
cointegrating equations while the max-eigen statistic             industrial sector output, real interest rate, labour and
indicates the presence of one cointegrating equation,             capital. The trace statistic and max-eigen statistic
both at the 0.05 level of significance. Thus, the                 reject the null hypothesis of no cointegration at 5 per
results confirm the existence of cointegration                    cent level of significance.
Table 3 above shows the normalized cointegration                  and insignificant relationship with the output of the
coefficients of the variables in the study model. The             industrial sector at 0.05 level of significance which
results in the table are explained with respect to the            deviates from a priori expectation.
signs and magnitude of the variables in the
normalized cointegration result. The probability                  4.3 Error Correction Model
(P>|z|) statistic is used to determine whether or not a
variable is significant at a 5% level. The null                   The error correction term measures the speed of
hypothesis states that the variable is not statistically          adjustment to restore equilibrium in the dynamic
different from zero and is thus insignificant while the           model. The error correction coefficient shows how
alternative hypothesis states that the variable is                quickly/slowly variables return to equilibrium and it
statistically different from zero and is thus                     should have a statistically significant coefficient with
significant. With a P-value less than 0.05, the null              a negative sign between 0 and 1.A highly significant
hypothesis cannot be accepted that the variable is                error correction term is further proof of the existence
statistically different from zero and is thus                     of a stable long-term relationship (Bannerjee et al.
significant. The coefficient of the variables shows if            1993). The Z statistic and the probability (P) statistic
the independent variable has a positive or negative               are used to test the null hypothesis that the coefficient
relationship with the dependent variable                          is statistically different from zero. Coefficients
         The coefficient values of credit to the private          having a p-value of 0.05 and less are termed
sector (CPS), the deposit rate (INT), and labour force            significant therefore the null hypothesis cannot be
(L) have a positive and significant relationship with             accepted and it is concluded that the coefficient is
the industrial sector output (Y) in accordance with a             significantly different from zero). However, if the p-
priori expectation at 0.05 level of significance while            value is greater than 0.05, the null hypothesis cannot
the gross fixed capital formation (K) and the ratio of            be rejected and it is concluded that the coefficient
broad money stock to GDP (MCY) have a negative                    value is not significantly different from zero.
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May. 2014. Vol. 4, No.1                                                                                  ISSN 2307-227X
                            International Journal of Research In Social Sciences
                                 © 2013-2014 IJRSS & K.A.J. All rights reserved
                                                www.ijsk.org/ijrss
Table 4 above shows that the error correction                      equilibrium relationship between the output of the
coefficient of industrial output (Y) is -0.283476.Thus,            industrial sector and the explanatory variables.
the speed of adjustment is -0.2834 suggesting that
about 28.3 percent of errors generated in the current              4.4   Granger Causality Test
period within the model are automatically corrected
in subsequent periods. The coefficient also has a p-               The Granger Causality test shows the causal
value of 0.002 and so the null hypothesis that the                 relationship which exists between the dependent
variable is not statistically different from zero is               variable and each of the independent variables in the
rejected and it is concluded that the variable is                  equation.
significant at a 5% level. The significance of the error
correction mechanism supports cointegration and
suggests that there exists a steady long-run
Table 5 above presents the result of the Granger                   further inspection, we notice that industrial output
causality test carried out to determine the direction of           has a significant P-value with the ratio of bank credit
causality between industrialization and financial                  to the private sector and broad money stock with P-
sector development in Nigeria. The P-value of the                  values of 0.019 and 0.039. Therefore, in both
joint effect of bank credit to the private sector as a             instances we cannot accept the null hypothesis that
ratio of GDP, and broad money stock as a ratio of                  the output of the industrial sector does not Granger
GDP on industrial output is 0.562. Therefore, we                   cause financial development which is captured by
cannot reject the null hypothesis that financial sector            these two financial depth variables. This therefore
development does not Granger cause industrialization               means that industrial output or industrialization
in Nigeria. This therefore suggests that the supply-               Granger causes financial development in Nigeria and
leading hypothesis and bidirectional causality do not              confirms the applicability of demand-following
hold between these two variables in Nigeria. Upon                  hypothesis in the Nigerian economy.
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May. 2014. Vol. 4, No.1                                                                                ISSN 2307-227X
                           International Journal of Research In Social Sciences
                                 © 2013-2014 IJRSS & K.A.J. All rights reserved
                                                www.ijsk.org/ijrss
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May. 2014. Vol. 4, No.1                                                                             ISSN 2307-227X
                          International Journal of Research In Social Sciences
                               © 2013-2014 IJRSS & K.A.J. All rights reserved
                                             www.ijsk.org/ijrss
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