FDI INFLOWS AND FINANCIAL DEVELOPMENT IN ECOWAS: CAUSALITY ANALYSIS IN THE FREQUENCY DOMAIN

Koffi Pokou

Dept of Economics, University FHB, Abidjan, Cote d’Ivoire.

ABSTRACT

Many studies have attempted to highlight the causal relationship between the inflows of Foreign Direct Investments (FDI) and the financial development with mitigated success in African countries, especially in ECOWAS member countries. For the most part, these studies have simply showed the importance of FDI and financial development in achieving GDP. To refocus the debate, this article analyzes in ECOWAS member countries the causal relationship between our variables of interest using recent causality techniques: time domain Granger (1969), Toda and Yamamoto (1995) and Breitung and Candelon (2006). Overall, country-by-country estimates revealed evidence of significant links between FDI inflows and financial sector development in terms of unidirectional as well as bidirectional causalities. Essentially, the findings imply that policymakers should not only address the causal direction between FDI inflows and financial development but also whether it is temporal or permanent and therefore authorities must define measures to be taken accordingly.

Keywords:Financial development, Foreign direct investment, Inflows, Frequency-domain , Granger, Causality, ECOWAS.

JEL Classification: C32; G10; O16.

ARTICLE HISTORY: Received:29 May 2020, Revised:8 July 2020, Accepted:12 August 2020, Published:24 August 2020

Contribution/ Originality: It is the first time the relationship between the inflows of FDI and the financial development in ECOWAS member countries has been analyzed by using the techniques mentioned above. These methods provide robust estimations. The findings suggest that the causality between financial development and FDI are mixed across different frequencies leading to varied policy designs.

1. INTRODUCTION

Over the last two decades, foreign investments has become an essential source of external capital complementary to domestic capital for Africa and especially in West African countries, which require substantial capital to sustain their development (Agosin & Machado, 2005; Seetanah, 2009).Several advantages of foreign direct investment (FDI) have been detected in the literature: for instance, fostering the technology diffusion process, acquisition of more developed management practices, poverty alleviation and productivity gain.

The literature indicates that the benefits mentioned above are contingent on the absorptive capacity of the host country. Among the important absorptive capacities considered in the literature, there are the quality of human capital  (Borensztein et al., 1998) and the financial sector development (Adjasi et al., 2012; Durham, 2004; Hermes & Lensink, 2003). However, the direct relationship between FDI and financial development has received little attention. The idea that financial development matters in the relation between FDI and economic growth has been studied extensively  (Alfaro et al., 2004, 2010; Bekaert et al., 2005; Hermes & Lensink, 2003; Levine et al., 2000; Levine & Zervos, 1998))  with insufficient insight of the direct causal association between FDI flows and financial development, particularly in West African countries where the financial sector is in the development phase. Empirical studies in this field are interested in the role of the financial sector as a channel of FDI in the process of economic production (Alfaro et al., 2004; Hermes & Lensink, 2003).

Notwithstanding this deficit of contributions studying the direct causal relation between FDI flows and financial development, the literature offers some empirical papers that have explored FDI-financial sector development nexus (Al Nasser & Gomez, 2009; Bayar & Ozel, 2014; Desbordes & Wei, 2017; Enisan, 2017; Fauzel, 2016; Korgaonkar, 2012; Sahina & Egeb, 2015; Zakaria, 2007). Korgaonkar (2012) applied a data mining technique on 78 countries during the 1980 to 2009 period and found that financial development remained a prerequisite for attracting FDI inflows.

Agbloyor et al. (2013) studied links concerning financial markets and FDI in Africa using 2SLS method through a panel data and established significant bidirectional causality in FDI-financial markets relation. Desbordes &Wei (2017) examined the link amid FDI flows and financial development in source and destination countries during the period 2003-2006. The findings of the panel data regression pointed out those countries desiring to encourage firm’s internationalization and attract foreign multinationals ought to promote actions to increase access on external financing. Focusing on a panel data of emerging markets. As for Soumaré &Tchana (2015), they explored the causality among FDI and financial market development and they argued that there is a two-way causal link between FDI and stock market proxies, but the link is unclear and inconclusive as regard the banking sector proxies. Gebrehiwot et al. (2016) studied causality on financial development-FDI nexus for eight African nations during 1991-2013 period and documented a bidirectional causality between variables. The contribution of Otchere et al. (2016) who has studied the direct causal linkage between FDI and financial markets in Africa, has demonstrated two-way causality and suggested a positive relationship between the variables. Yilmaz & Gavriletea (2018) assessed the connection between FDI inflows and financial development in CEEU countries from 1996 to 2015 by means of panel cointegration and causality approaches. They found no cointegration relation between FDI inflows, investments of foreign portfolio, and financial sectors, however they showed that unidirectional causality from financial development to FDI inflows exist as concern the short term. More recently, Njangang et al.(2019) analysed the long and short‐term impacts of FDI inflows on financial development in forty-nine African economies from 1990 to 2016 and found that FDI stimulate financial sector development over the long term. This article contributes to the literature of FDI inflows and financial development by using the frequency domain causality test to assess short-, medium and long-term causality and seeks to show whether the direction of causality vary along the periods.

Among the studies consecrated exclusively on the relation between FDI inflows and financial development, this is the first evidence, which explores causal relation between these two notions in the frequency domain analysis in the case of West African countries. Investment is essential to fostering the West Africa economy. Despite the relatively robust economic growth in West Africa in recent years, the region accounts for only around 1% of global FDI. Our examination of the causality among FDI inflows and financial development concerns a sample of fourteen ECOWAS economies. The rest of the study is organised as follows: Section 2 focuses on data description, Section 3 presents econometric methodology with empirical results in Section 4, and Section 5 concludes with final remarks.

2. DATA DESCRIPTION

The study used yearly data for fourteen countries of ECOWAS. According to the empirical literature on this topic, two different indicators were adopted to measure financial development, namely, liquid liabilities (LIAB) represent measure of “financial depth” (King & Levine, 1993a; Shen & Lee, 2006)) and domestic credit issued from the banking sector to the private sector (BANK) indicate a measure of the size of the financial sector (King & Levine, 1993a, 1993b). FDI inflows had as a measure the net inflows of FDI. The period of the study was delimited by the obtainability of data for each country. Our different variables were expressed in percentage of GDP. Data were extracted from the Global Financial Development and World Development Indicators in the World Bank database. Table 1 proposes summary statistics of the series used and the countries in our sample.

Table-1. Descriptive statistic.
Country Variable
Mean
SD
Min
Max
T
Benin FDI
1.232
1.683
-0.9
6.08
38
LIAB
26.157
6.87
13.379
42.856
37
BANK
18.062
8.087
5.415
31.84
38
Burkina-Faso FDI
0.726
1.045
-0.092
4.104
38
LIAB
21.072
5.519
12.304
35.145
37
BANK
15.059
5.976
6.649
31.257
38
Cabo Verde FDI
4.884
3.86
-0.005
12.667
32
LIAB
56.14
21.287
27.344
98.847
37
BANK
29.65
23.385
1.664
65.278
38
Cote d'Ivoire FDI
1.319
1.004
-2.07
3.543
38
LIAB
27.691
4.404
21.209
36.625
37
BANK
24.316
9.987
12.372
41.871
38
Gambia, The FDI
3.009
3.368
-1.072
12.55
38
LIAB
26.084
13.461
13.654
53.66
35
BANK
11.449
6.428
3.507
24.885
38
Ghana FDI
2.916
2.98
0.045
9.517
38
LIAB
15.746
7.944
6.339
32.064
37
BANK
8.948
5.092
1.542
15.827
38
Guinea FDI
2.45
4.268
-0.84
18.809
32
LIAB
13.004
6.935
5.647
25.257
26
BANK
4.909
2.268
2.627
10.775
29
Guinea-Bissau FDI
1.303
1.071
0.016
4.274
34
LIAB
17.403
13.732
0.11
47.007
31
BANK
6.894
4.524
0.403
18.501
28
Mali FDI
1.586
1.757
-0.773
6.351
38
LIAB
20.155
4.317
14.135
27.236
37
BANK
15.954
4.717
7.341
27
38
Niger FDI
2.933
4.549
-2.138
16.629
38
LIAB
16.147
4.793
7.294
26.549
37
BANK
11.074
4.825
3.3
17.39
38
Nigeria FDI
1.717
1.325
-1.151
5.791
38
LIAB
18.241
7.307
9.609
33.864
37
BANK
9.608
4.312
4.948
22.267
38
Senegal FDI
1.167
1.005
-0.988
2.976
38
LIAB
28.052
7.907
19.958
46.133
37
BANK
20.035
5.968
11.536
29.537
38
Sierra Leone FDI
3.097
8.637
-28.624
32.301
38
LIAB
12.575
4.743
6.024
23.322
37
BANK
4.277
1.872
1.522
8.159
38
Togo FDI
2.366
3.228
-1.384
18.818
38
LIAB
34.993
9.097
20.918
52.472
37
BANK
23.089
7.852
11.473
41.708
38

3. ECONOMETRIC METHODOLOGY

As stated above, the main purpose of the current research was to assess the Granger causal relation among FDI inflows and financial development indicators in ECOWAS over different frequencies, therefore, we performed the Breitung and Candelon (2006) test originally introduced by Geweke (1982) and got the results below:

4. EMPIRICAL RESULTS

We determined empirically the causal direction between FDI and financial development via the frequency domain analysis at a high (ω=2,5), a medium (ω=1,5) and a low (ω=0,5) frequency. These frequencies denote the permanent -, the intermediate-, and the temporary causality, respectively. For comparison, we also performed the time domain causality test in the spirit of Toda and Yamamoto (1995) and Dolado and Lütkepohl (1996)1 .

Table 2 presents the frequency domain causality test results between FDI and LIAB as a proxy of financial development for each country. Following these results, it appears that there is both permanent and temporary bidirectional causality between FDI and LIAB for Burkina-Faso, Guinea and Nigeria. Additionally, there is permanent causality for Benin, Gambia and Mali, and temporary causality for Benin, Ghana and Guinea-Bissau from FDI to LIAB. The findings also suggested unidirectional causality from FDI to LIAB in the intermediate term for Benin, Ghana, Guinea, Mali and Nigeria. For the relationship going from LIAB to FDI, there was evidence of unidirectional permanent causality for Cabo Verde and Sierra Leone, and unidirectional causality in the medium term for Burkina-Faso, Cabo Verde, Guinea and Nigeria. In most of the cases, there was no link between these variables. The time domain causality test estimates between FDI and LIAB in columns 3 and 4 of Table 2 corroborate2 the findings in the frequency domain.

Table-2. Results of frequency domain Granger-causality test between FDI and financial development (with LIAB as indicator).
 
Data range
Causality test results in the time domain
Causality test results in the frequency domain
 
 
FDI 9LIAB
LIAB 9FDI
FDI 9LIAB
LIAB 9FDI
 
Permanent ω=0,5
Medium ω=0,5
Temporary ω=2,5
Permanent ω=0,5
Medium ω=0,5
Temporary ω=2,5
Benin
1980-2016
7.3856*
2.5796
4.6884*
5.5912*
5.8649*
0.6899
1.3923
1.5243
Burkina-Faso
1980-2016
12.419***
20.559***
6.9925**
1.2664
4.9841*
11.2558***
11.6536***
9.2982***
Cabo Verde
1986-2016
1.9237
11.176**
1.3060
1.1004
0.7229
8.0628**
4.6032
3.8929
Côte d'Ivoire
1980-2016
2.5069
1.7862
1.7276
1.3633
0.7856
0.6147
0.3501
0.5579
Gambia
1980-2014
8.5966*
1.4691
6.2107**
0.3743
0.8194
0.8263
1.1346
1.1434
Ghana
1980-2016
9.3692**
11.091**
0.2507
7.4267**
6.4017**
2.6501
3.1184
3.7047
Guinea
1991-2016
7.6005*
34.742***
5.2179*
5.0030*
4.7071*
16.2514***
5.2195*
5.5670*
Guinea Bissau
1986-2016
8.6635**
2.2675
4.4680
0.8267
4.7127*
0.4268
0.9170
1.0684
Mali
1980-2016
11.311**
6.0278
8.9822**
3.1278
0.4699
3.8912
1.1789
1.5571
Niger
1980-2016
5.3299
0.54347
4.2006
0.7904
0.3446
0.3901
0.2676
0.2736
Nigeria
1980-2016
12.224***
11.545
8.2001**
4.6523*
6.5373**
5.7742*
6.5192**
4.8119*
Senegal
1980-2016
4.8191
5.1094
3.3344
2.7443
0.4671
4.0257
2.9338
2.7422
Sierra Leone
1980-2016
5.9245
6.7129*
3.5431
3.0893
4.3133
5.3306*
3.4700
3.0797
Togo
1980-2016
3.2275
1.5825
2.5068
1.2699
0.0521
1.0372
1.0827
0.9960
Notes: This table presents the Granger causality tests between FDI and LIAB variables.
*** is for significance level of 1, ** for 5 and * for 10%.

Table 3 provides the causal nexus between FDI and BANK for each country. The findings provided evidence of a bidirectional causality at all frequencies in the case of Cote d’Ivoire and permanent bidirectional causality for Guinea. There was permanent causality for Cabo Verde, Guinea Bissau and Mali, and temporary as well as intermediate causality for Guinea for the relationship running from FDI to BANK. Our findings also suggested a one-way causal nexus from FDI inflows to BANK at all frequencies for Togo. On the other hand, there was no evidence in most cases 3 of a causal link between FDI inflows and bank credit.

Table-3Results of frequency domain granger-causality test between FDI and financial development (with BANK as indicator).
 
Data range
Causality test results in the time domain
Causality test results in the frequency domain
 
 
FDI 9 BANK
BANK 9 FDI
FDI 9BANK
BANK 9FDI
 
 
 
 
Permanent ω=0,5
Medium ω=0,5
Temporary ω=2,5
Permanent ω=0,5
Medium ω=0,5
Temporary ω=2,5
Benin
1980-2017
3.2171
3.5233
1.5520
0.1991
1.1687
1.1862
1.0597
1.3317
Burkina-Faso
1980-2017
5.5387
0.33256
4.5181
0.3687
0.1514
0.2580
0.0532
0.0213
Cabo Verde
1986-2017
8.8285*
1.625
5.8526*
2.7997
4.2439
0.7774
0.2716
0.3110
Côte d'Ivoire
1980-2017
20.185***
40.272***
16.3828***
9.4538***
9.8112***
23.6606***
7.3487**
7.0944**
Gambia
1980-2017
1.6003
2.0264
0.9116
0.0465
0.3102
1.4704
0.1384
0.1117
Ghana
1980-2017
2.4507
7.8804
0.2173
1.9938
1.8245
4.2361
1.8279
2.6324
Guinea
1989-2017
27.192***
6.6846*
17.2103***
17.2285***
12.6009***
4.8834*
3.4161
3.4818
Guinea Bissau
1990-2017
10.366**
1.4778
6.7872**
0.5178
3.2229
1.0449
0.9149
0.8597
Mali
1980-2017
15.805***
3.1363
12.0385***
2.0223
0.9463
0.6126
2.4828
2.2268
Niger
1980-2017
4.4114
3.032
3.5668
0.5906
0.2195
2.4733
1.3662
1.2277
Nigeria
1980-2017
2.162
4.4268
0.2506
1.6894
1.5739
2.4016
1.5416
1.9805
Senegal
1980-2017
3.4375
1.6787
2.7370
0.5002
0.1816
1.3686
0.7764
0.7042
Sierra Leone
1980-2017
4.0556
1.9454
3.2921
1.0208
0.5875
1.4823
1.5012
1.5410
Togo
1980-2017
33.823***
1.6052
26.4481***
15.3442***
7.8590**
0.2975
0.4354
0.7688
Notes: This table presents the Granger causality tests between FDI and BANK variables.
*** is for significance level of 1, ** for 5 and * for 10%.

According to the results provided in Table 2 and Table 3, it appears that the causal link between financial development and FDI is sensitive to different proxies employed as indicator of financial development and then findings concerning causality can differ if one modify the proxy of the financial development.

To summarize, our empirical findings supported earlier work on the causal nexus FDI-financial development. The unidirectional causal results from FDI to financial development were consistent with Abzari, Zarei, and Esfahani (2011) and Agbloyor et al. (2013) but the causality running from financial development to FDI were consistent with Desbordes and Wei (2017) and Yilmaz and Gavriletea (2018). Our bidirectional causality findings were also consistent with Gebrehiwot et al. (2016); Fauzel (2016) and Otchere et al. (2016).

5. FINAL REMARKS

This paper studied the causality between FDI inflows and financial development in a country-by-country time-series framework for ECOWAS. The frequency domain test developed by Breitung and Candelon (2006) assesses the direction of causality at a given frequency. Frequency domain method allows decomposing in time-periods and shows the causality in different time frequencies.

Two different variables were chosen as indicators of financial development and the empirical findings indicated that the causality results may change depending on the measure of financial development employed. The findings suggested that the causality between financial development and FDI was mixed across different frequencies (i.e. in terms of permanent, medium or temporary causality).

Overall, country-by-country estimates revealed evidence of (i) unidirectional causality, (ii) bidirectional causality and (iii) absence of causality between variables. These empirical findings lead to varied policy designs.

First, for the causality from FDI to finance, we suggest implementing more FDI-attracting policies to enhance financial development. Second, for the causality from financial development to FDI, we suggest implementing strategies that improve the level of the financial sector which will be beneficial for FDI flows to West Africa. Thirdly, for the two-way causality, the joint policies of financial reforms and investment-promoting policies for FDI can have a significant effect on the economic development of ECOWAS countries. In addition, policymakers should not only address the causal direction between FDI inflows and financial development but also whether it is temporal or permanent and therefore authorities must define measures to be taken accordingly.

Funding: This study received no specific financial support.  

Competing Interests: The author declares that there are no conflicts of interests regarding the publication of this paper.

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Footnotes:

1. See Ciner (2011) for more details about this discussion.

2. There is existence of causal link in Ghana for the frequencies around 0.25.

3. There is existence of causal link in Ghana for the frequencies around 0.25.