Abstract
The relationship between linkage to the West and the survival of political regimes has gained increasing attention in recent years. Despite this attention, one aspect of this linkage remains poorly understood, and that is the effect of linkage to the West on electoral manipulation. Scholars have suggested that linkage to the West raises the cost of government abuse because it increases the probability of Western governments taking action in response to reported abuse. This assumption then suggests that incumbents should choose the forms of repression more wisely. Consequently, in cases of the higher level of linkage to the West incumbents are less likely to use the more visible forms of repression and manipulation. I test the aforementioned assumptions on time series, cross-national data set with observations of 147 elections in competitive authoritarian regimes between 1990 and 2010. I find that extensive international relations to the West have only minimal and statistically non-significant effect on visible forms of repression and manipulation. These results contribute to our understanding of international linkage as they show that linkage to the West does not provide sufficient protection to opposition leaders and groups.
Introduction
The international Zeitgeist after the Cold War has made it much harder for explicitly authoritarian and politically closed regimes to emerge and survive. However, we cannot say that with the third wave of democratization (Huntington, 1991), all forms of authoritarianism would cease to exist around the globe. The very specific international constellation, a significant feature of which was a distinctive emphasis of the international community on free elections, led to a formation of numerous political regimes where democratic institutions exist, yet those who are at the control of power often resort to regular violations of democratic principles in order to retain the power they possess (Castañeda, 1996; Diamond, 2002; Levitsky and Way, 2010). Hence, elections in these regimes are considered competitive, but are not fair.
The common occurrence of such regimes, often referred to by the collective term of “hybrid” or “mixed,” has led to a rapid expansion of empirical research. The result of these research efforts is that today we can tell when power holders manipulate the elections (Bhasin and Gandhi, 2013; Birch, 2011; Magaloni, 2006; Przeworski and Gandhi, 2009; Simpser, 2013), strategies they employ (Schedler, 2002), and when they can be defeated (Bunce and Wolchick, 2011; McFaul, 2005). Our understanding of impacts of repression and manipulation on the party system design (Donno and Roussias, 2012) has also significantly advanced, as well as the understanding of trust in political institutions (Lehoucq 2003: 249) or forms of post-elections protests (Harvey and Mukherjee, 2018).
However, the current state of research in this field is for one reason unsatisfactory. Little is known about the effects of linkage to the West on electoral manipulation, particularly, how linkage to the West affects the selection of a concrete manipulative or repressive strategy. Earlier studies that have tried to explain on what basis the power holders choose among single strategies were mostly involved with domestic factors (Hauser, 2017; Schedler, 2013; Seeberg, 2014; Van Ham and Lindberg, 2015). The exception here are the works studying the impacts of international observers on the form of manipulation (Beaulier and Hyde, 2009; Cheeseman and Klaas, 2018; Hyde, 2007), yet these works were evaluating the effects of short-term international factors.
Based on present literature, the international constellation should play a role even in a long-term scope. Levitsky and Way assume that leaders in hybrid regimes are in their decision-making processes affected by the state’s level of linkage to the West. These linkages raise the international cost of repression because they increase the probability of Western governments taking action in response to reported abuse (Levitsky and Way, 2010: 45). Alongside with this assumption, autocratic leaders in countries with high level of linkage should, bearing in mind the possible consequences, commit the visible forms of repression and manipulation less often.
The aim of this article is to fill the gap in comprehending the relation between linkage to the West and electoral manipulation. Using empirical test and combining the original data set about linkage to the West in competitive authoritarian regimes between 1990 and 2010 from Levitsky and Way with the new data about incumbent’s abuse of power from V-dem database (Coppedge et al., 2019b), in the end I do not find support for this argument. Extensive international ties to the West reduce the level of some of the visible forms of repression and manipulation; nonetheless, this effect is small and statistically nonsignificant. These results contribute to our understanding of international linkage as they show that linkage to the West does not provide protection to opposition leaders and groups.
How Linkage Affects Repression and Manipulation
The linkage to the west is supposed to affect the level and type of repression and manipulation. The origin of this explanation lies in the theory of regime changes by Levitsky and Way (2010). The authors, in their undoubtedly pathbreaking work, tried to explain different regimes trajectories of competitive authoritarianisms after the end of the Cold War. In their view, the fate of this hybrid regimes category is affected by the combination of three variables: linkage (to the West), leverage (Western), and organizational power. Among the above-mentioned triad, the linkage is clearly the most fundamental since it constitutes a fundamental condition for democratization. In their book, Levitsky and Way do not present a single case of democratization without a high level of linkage to the West. The other two variables then become a factor only in cases of low level of linkage, and they only determine how stable a form of authoritarian government establishes in a certain country (Levitsky and Way, 2010; Slater, 2011). Levitsky and Way (2010: 43) define linkage to the West as the density of ties (economic, political, diplomatic, social, and organizational) and cross-border flows (of capital, good and services, people, and information) among particular countries and the United States, the EU (and pre-2004 EU members), and Western-dominated multilateral institutions (Levitsky and Way, 2010: 43).
Intensive ties to the West contribute to democratization in four different ways. They help to even the uneven play field between government and opposition, increase the probability of potential rupture within autocratic parties, improve the image of democratic opposition at domestic audience, and what is central for this article, they protect opposition before regime repression (Levitsky and Way, 2010: 47–48). Linkage to the West raises the international cost of repression as it increases the probability that Western governments will take action in response to reported abuse. There is a simple explanation for this. A country with international ties to the West becomes a subject of Western media more frequently. Even relatively small signs of repression and manipulation may then draw international attention. If that happens, it becomes more likely that media, international nongovernmental organizations, and civil society will push the governments of Western countries to intervene. Typical cases are the different approaches to competitive authoritarianism in Slovakia and Zimbabwe. Due to high level of linkage to the West, Vladimir Mečiar’s regime was far more often the target of criticism and kept drawing attention from the Western pro-democracy actors for even minor violations of democratic procedures such as violating informal parliamentary norms of committee assignment. By contrast, due to low level of linkages to the West, the international attention paid to Zimbabwe was sporadic and focused only on the most extreme abuses of power (Levitsky and Way, 2010).
Based on this assumption, it is possible to establish hypothesis on the relationship among the linkage to the West, and repression and manipulation. It is supposed to be risky for power holders in hybrid regimes to employ acts of fraud or repression, provided the ties of their country to the West are strong. Employment of repression and manipulation will lead to reducing legitimacy at the international landscape which may turn into imposing sanctions, limiting foreign aid or even direct international intervention (Tanneberg et al., 2013: 119).
Nevertheless, it is likely that a high level of linkage to the West will not influence all types of repressions and manipulation in the same way. That is due to the diverse visibility of individual strategies that causes the international audience being more sensitive to some expressions of electoral manipulation than others. Following Schedler’s (2013) conceptualization, this article works with a quaternion of strategies: exclusion, repression, fraud, and censorship.
The most visible form is the exclusion of majority or all of the major opposition candidates. This form of electoral manipulation is difficult to hide as it directly pertains the actors who, in the country with a high level of linkage to the West, will surely try to draw attention to their situation (Schedler, 2013: 274) as it is on the outs with the ideal of liberal democracy. Another visible form of manipulation is a direct repression of opposition representatives. Experience shows that international audience is highly sensitive to violent acts of current authoritarianists (Cheeseman and Klaas, 2018: 96–97). The electoral fraud is also a visible form of electoral manipulation because it is vulnerable to detection and high profile (Cheeseman and Klaas, 2018). On the other hand, censorship is harder to spot (Donno, 2013: 172; Schedler, 2013: 274). That is because of media censorship, if performed well, is nearly impossible to uncover, and as a bonus, it reduces the visibility of other strategies for manipulate domestic audience (Van Ham and Lindberg, 2015):
H1: Governments in high-linkage contexts are less likely to use the more visible forms of repression and manipulation (exclusion, repression and fraud).
H2: High linkage to the West does not affect the less visible form of repression and manipulation (censorship).
Data and Methods for the Explanatory Analysis 1
In this text, hybrid regimes are called all the regimes that Levitsky and Way (2010) regard as competitive authoritarianisms in their book. Hence, the time range is limited to the years 1990–2010. There are two reasons for this limitation. The first one is the fact that the book is trying to verify Levitsky and Way’s theoretical assumptions on cases that the authors call competitive authoritarianisms. That is mainly given by Levitsky and Way (2010: 34) saying that the validity of their theoretical assumptions is restrained by the time they are focused on in their book. In my view, expanding the time range would not then be quite fair toward the authors. Considering the tested hypotheses, it would be undeniably worse if they do not stand against the cases that should be valid by all means, in other words the competitive authoritarianisms right after the end of Cold War. Second reason is that for these cases, the same authors offer data on the linkage to the West. The aim of this work is then as much as possible to replicate Levitsky and Way’s original data. Nevertheless, competitive authoritarianisms are obviously not the only type of hybrid regime. It is still the regime category that is the most common in the current world and for which the aforementioned theoretical hypothesis should be most applicable (Levitsky and Way, 2010: 13–16).
In this work, it is the single repressive and manipulative strategies that are the dependent variables. The formulations of the data come from the V-Dem database. This is a new comprehensive data set on democracy that collects data on more than 450 indicators of democracy in 173 countries around the world from 1789 until 2018, engaging over 3000 country experts worldwide to collect the data (Coppedge et al., 2019b). As was already noted in the preceding part, this article works with a quaternion of strategies: exclusion, repression, fraud, and censorship. The advantage of the V-Dem strategy is that the value of all variables is given on the scale from 0 to 4 including decimals. 2 That is a major improvement in the data quality as earlier researches often must have worked only with dichotomous variables. 3 The overview of the used variables may be found in Table 1.
Overview of the Depend Variables.
To formulate the level of exclusion, two variables from the V-Dem database are suitable to use. The first is Party Ban that gives the number of banned parties. Barriers to parties then illustrate how high the obstacles for starting a political party are (Coppedge et al., 2019a: 88–89). In order to capture the level of repression, two variables are used again—Physical violence index 4 and Election government intimidation. The first one involves political murders and tortures, in other words the violent forms of repression, while intimidation looks at whether members of political opposition are intimidated or harassed by the ruling party (Coppedge et al., 2019a: 58).
To identify the level of electoral fraud, 5 EBM autonomy variable—indicator of the independence of electoral committees—is selected (Coppedge et al., 2019a: 53). The V-Dem database includes also other variables that might be put in use here; however, this is the closest to delineating the electoral fraud in Schedler’s sense. In his view, electoral fraud is a situation when electoral bodies convey unusual attraction toward power holders (Schedler, 2013: 99). Finally, two variables are selected in order to identify censorship level. The paper then, similarly like Levitsky and Way (2010: 11), distinguishes between the state when media liberty is restrained (censorship) and situation when media are biased toward power holders.
The explanatory variable is the level of linkage to the West. Source of the data is the previously mentioned Levitsky and Way’s (2010) work. Apart from the linkage to the West, some types of electoral manipulation are likely to be influenced by other contextual factors, as well. To address this, I include several control variables. The first one is a dichotomous variable determining whether a government holds a majority in the parliament. 6 Power holders with a legislative majority should then favor exclusion and censorship over violence and fraud (Schedler, 2013: 198). The second control variable gives the level of state capacity. 7 Earlier works indicate that in non-democratic regimes with a lower level of state capacity, power holders still favor repression as they are not able to enjoy support of more “sophisticated” forms of manipulation (Seeberg, 2014: 1269–1271). Another control variable is the election type (legislative, executive, and concurrent). At executive and concurrent elections, media manipulation often takes place (Birch, 2011). The overall level of repression should be affected by contextual factors, anyway. First, one may assume that electoral manipulation is supposed to be more frequent at executive and concurrent elections since such elections are more important for rulers in hybrid regimes (Schedler, 2013: 287). Next to that, electoral manipulation is expected to be more frequent in countries affluent with mineral resources. A dictator in a country affluent with mineral resources 8 tries to retain his power as long as possible (Michalik, 2015: 53–85). For similar reasons, electoral manipulation is supposed to be more frequent also in countries with a high level of social inequalities (Henderson, 1991: 125). It is because both situations raise the stakes of authoritarian politics seeing that in the case of electoral defeat, a dictator has more to lose (Schedler, 2013: 284). Finally, I use data on gross domestic product (GDP) growth in order to control for economic situation. The electoral manipulation surge may be a reaction to worsening of economic situation (Dresden and Howard, 2015).
The unit of analysis is the individual elections. There are 147 cases of elections 9 in total between 1990 and 2010 in 34 countries. Panels are unbalanced with uneven gaps in the time-series as observations per group range from 1 to 8 with an average of 4.31. Given that the observations are nested within specific countries, 10 the most suitable method to take such features into account is multilevel analysis. I analyze the data using multilevel regression model (random intercept). I opted for the random-effects models because of the value of the linkage to the West being constant on country level, and random effect models are able to account for this situation (Clark and Linzer, 2015).
Results 11
The analysis results are presented in Table 2. Three different models were created for each of the dependent variables. Basic models show the result without the control variables, while full models include all the control variables. Beside these two, I also included the null models. According to the logic of the first hypothesis, governments in hybrid regimes with a high level of linkage to the West are supposed to employ exclusion, repression, and fraud on a lesser scale. Howbeit, the results of the performed analysis show a different picture. Linkage to the West lowers the level of repression, nonetheless the effect is very small and with one exception statistically nonsignificant. The effect of linkage to the West is statistically significant but only in the basic model of repression. In case of exclusion, the detected effect is again negligible. What is even more interesting is that the level of one its components—party ban—rises. As in the case of repression, none of these results reach conventional levels of statistical significance. 12 In countries with a high level of linkage to the West the level of electoral frauds decreases, but this effect is again small and statistically nonsignificant. The Akaike information criterion (AIC) and Bayes information criterion (BIC) scores show that the null models outperform the other two models for each dependent variable, which also confirms that there is no significant effect of linkage. Linkage to the West, without doubt, does not lower the level of repression and manipulation. The presented hypothesis then must be rejected. Two explanations may be offered here. The first one is that international reputation is not as important for power holders as the recent literature assumes. In numerous cases, that may be caused by specific domestic political factors being more important than linkage to the West. An example of such factor may be the level of economic freedom. In one of his studies, Weyland (2013) shows that hybrid regimes with high level of economic nationalism are more resistant toward international pressures for democracy. In other cases, international reputation does not have to be so significant such as in a situation when a government in hybrid regime may lean on autocratic sponsors like Russia or Venezuela (Tansey, 2016). The second explanation points out that Western countries do not always care about spreading democracy. Levitsky and Way (2010) only mention this option marginally in case of France’s actions in some of African countries. However, in recent years, other scholars also mentioned this possibility in cases of the United States’ actions in Egypt (Brownlee, 2012) and Nicaragua (Thaler, 2016).
Analysis explaining the effect of linkage to the West on electoral manipulation, 1990-2010.
GDP: gross domestic product; AIC: Akaike information criterion; BIC: Bayesian information criterion.
Multilevel regression analysis, clustered by country with random effects. Robust standard errors in parentheses. P-values: †p < 0.1; *p < 0.05. **p < 0.01. ***p < 0.001.
When it comes to the second hypothesis, the results confirm more the expectations concerning the effect of linkage on the less visible form of repression and manipulation. High linkage to the West certainly does not affect the level of censorship. The controls suggest that several factors are not related to these outcomes in the ways the literature suggests. The most surprising result appears to be that a legislative majority in government hands does not affect the form of manipulative strategy. This relationship may be valid for several specific cases like Nicaragua after Daniel Ortega’s return to power (Martí i Puig, 2016), but it cannot be generalized to a broader field of hybrid regimes. Another surprising finding is that executive and concurrent elections do not increase the level of any tested form of manipulation. Conversely, the results confirm some assumptions concerning the effect of the level of state capacity.
Conclusion
Does the level of linkage to the West affect the form of electoral manipulation? Theoretical literature suggests so. Governments in hybrid regimes with a high level of linkage to the West, in lines with this, commit the visible forms of repression and manipulation less often.
Yet, the analysis results do not encourage such deductions. Extensive international relations to the West have only minimal and statistically nonsignificant effect on the visible forms of repression and manipulation. Acquired findings clearly illustrate that even in the first two decades after the end of Cold War, an intense level of linkage to the West did not increase the international cost of repression, as many recent influential authors led Levitsky and Way (2010) hypothesized. It was this very hypothesis that in their view presented one of the ways of how the key variable of their theory—linkage to the West—contributed to the democratization of competitive authoritarianisms after the end of Cold War. Obviously though, disproving such hypothesis does not automatically mean that the whole theory of regime changes by Levitsky and Way is invalid. It only shows that the linkage to the West works differently than its authors intended because it does not provide protection to opposition leaders and groups.
Footnotes
Appendix A
Universe of Cases.
| Case | Elections | Case | Elections | Case | Elections |
|---|---|---|---|---|---|
| Guyana | 1992 | Gabon | 1996 | Georgia | 1999 |
| Croatia | 1992 | Gabon | 1998 | Georgia | 2000 |
| Croatia | 1995 | Gabon | 2001 | Georgia | 2003 |
| Croatia | 1997 | Gabon | 2005 | Georgia | 2004 |
| Croatia | 2000 | Gabon | 2006 | Georgia | 2008 |
| Slovakia | 1994 | Moldova | 1994 | Zimbabwe | 1990 |
| Slovakia | 1998 | Moldova | 1996 | Zimbabwe | 1995 |
| Mexico | 1991 | Moldova | 1998 | Zimbabwe | 1996 |
| Mexico | 1994 | Moldova | 2001 | Zimbabwe | 2000 |
| Mexico | 1997 | Moldova | 2005 | Zimbabwe | 2002 |
| Mexico | 2000 | Russia | 1995 | Zimbabwe | 2005 |
| Macedonia | 1994 | Russia | 1996 | Zimbabwe | 2008 |
| Macedonia | 1998 | Russia | 1999 | Kenya | 1992 |
| Serbia | 1992 | Russia | 2000 | Kenya | 1997 |
| Serbia | 1997 | Russia | 2003 | Kenya | 2002 |
| Serbia | 2000 | Russia | 2004 | Kenya | 2007 |
| Nicaragua | 1990 | Russia | 2007 | Malawi | 1992 |
| Albania | 1991 | Russia | 2008 | Malawi | 1994 |
| Albania | 1992 | Senegal | 1993 | Malawi | 1999 |
| Albania | 1996 | Senegal | 1998 | Malawi | 2004 |
| Albania | 1997 | Senegal | 2001 | Malawi | 2009 |
| Albania | 2001 | Senegal | 2007 | Mozambique | 1994 |
| Albania | 2005 | Ukraine | 1991 | Mozambique | 1999 |
| Dominican Republic | 1994 | Ukraine | 1994 | Mozambique | 2004 |
| Dominican Republic | 1996 | Ukraine | 1998 | Benin | 1991 |
| Romania | 1990 | Ukraine | 1999 | Benin | 1995 |
| Romania | 1992 | Ukraine | 2002 | Benin | 1996 |
| Romania | 1996 | Ukraine | 2004 | Benin | 1999 |
| Romania | 2004 | Botswana | 1994 | Benin | 2003 |
| Haiti | 1990 | Botswana | 1999 | Madagascar | 1992 |
| Haiti | 1995 | Botswana | 2004 | Madagascar | 1998 |
| Haiti | 2000 | Belarus | 1994 | Madagascar | 2001 |
| Haiti | 2006 | Belarus | 1995 | Madagascar | 2002 |
| Malaysia | 1990 | Belarus | 2000 | Madagascar | 2006 |
| Malaysia | 1995 | Belarus | 2001 | Madagascar | 2007 |
| Malaysia | 1999 | Belarus | 2004 | Mali | 1992 |
| Malaysia | 2004 | Belarus | 2006 | Mali | 1997 |
| Malaysia | 2008 | Belarus | 2008 | Mali | 2002 |
| Peru | 1995 | Ghana | 1992 | Zambia | 1991 |
| Peru | 2000 | Ghana | 1996 | Zambia | 1996 |
| Armenia | 1995 | Ghana | 2000 | Zambia | 2001 |
| Armenia | 1996 | Cameroon | 1992 | Zambia | 2006 |
| Armenia | 1998 | Cameroon | 1997 | Cambodia | 1993 |
| Armenia | 1999 | Cameroon | 2002 | Cambodia | 1998 |
| Armenia | 2003 | Cameroon | 2004 | Cambodia | 2003 |
| Armenia | 2007 | Cameroon | 2007 | Cambodia | 2008 |
| Armenia | 2008 | Georgia | 1991 | Tanzania | 1995 |
| Gabon | 1990 | Georgia | 1992 | Tanzania | 2000 |
| Gabon | 1993 | Georgia | 1995 | Tanzania | 2005 |
Appendix B
Summary Statistics.
| Variable | Observations | Mean | Standard deviation | Minimum | Maximum |
|---|---|---|---|---|---|
| Linkage | 147 | 0.432 | 0.295 | 0 | 0.97 |
| Ban | 147 | 0.396 | 0.497 | 0.07 | 3.86 |
| Bias | 147 | 1.5 | 0.83 | 0.17 | 3.92 |
| Violence | 147 | 0.385 | 0.218 | 0.05 | 0.96 |
| Intimidation | 147 | 1.47 | 0.73 | 0.08 | 2.91 |
| Fraud | 147 | 2.34 | 0.917 | 0.5 | 3.96 |
| Censor | 147 | 2.01 | 0.87 | 0.33 | 3.93 |
| Legislative majority | 147 | 0.417 | 0.493 | 0 | 1 |
| State capacity | 147 | 91.1 | 8.11 | 70 | 100 |
| Main elections | 147 | 0.74 | 0.433 | 0 | 1 |
| GINI | 147 | 42.35 | 11.39 | 20.4 | 73.3 |
| Natural rent | 147 | 6.5 | 8.33 | 0 | 40.1 |
| GDP grow | 147 | 2.78 | 6.33 | −21.1 | 15.37 |
GDP: gross domestic product.
Appendix C
Correlation Between Independent Variables (Pearson’s Correlation Coefficient).
| Main elections | Legislative majority | GINI | Capacity | Growth | Linkage | Rent | |
|---|---|---|---|---|---|---|---|
| Main | 0.158 | 0.02 | 0.013 | −0.02 | 0.156 | −0.122 | |
| Legislative majority | 0.158 | 0.238** | 0.082 | −0.060 | 0.058 | 0.356** | |
| GINI | 0.02 | 0.238** | 0.196* | −0.071 | −0.353** | 0.207* | |
| Capacity | 0.013 | 0.082 | 0.196* | −0.080 | 0.127 | 0.082 | |
| Growth | −0.02 | −0.060 | −0.071 | −0.080 | −0.176* | −0.083 | |
| Linkage | 0.156 | 0.058 | −0.353** | 0.127 | −0.176* | −0.137 | |
| Rent | −0.122 | 0.356** | 0.207* | 0.082 | −0.083 | −0.137 |
P-values: *p < 0.05. **p < 0.01. (2-tailed)
Appendix D
Models With Alternative Measures of Electoral Fraud.
| Explanatory variables | Vote registry | Irregularities | Fraud a | |||
|---|---|---|---|---|---|---|
| Linkage | −0.085 | −0.091 | −0.164 | −0.120 | −0.014 | −0.025 |
| (0.089) | (0.100) | (0.110) | (0.121) | (0.047) | (0.045) | |
| Legislative majority | −0.028 | 0.133* | −0.071 † | |||
| (0.035) | (0.062) | (0.042) | ||||
| State capacity | −0.054 | 0.023 | 0.099* | |||
| (0.048) | (0.079) | (0.040) | ||||
| Main elections | 0.039 | 0.044 | −0.089* | |||
| (0.029) | (0.053) | (0.040) | ||||
| GINI | −0.017 | 0.028 | 0.050 | |||
| (0.058) | (0.093) | (0.045) | ||||
| Natural rent | 0.007 | −0.068 | −0.079 † | |||
| (0.063) | (0.100) | (0.045) | ||||
| GDP growth | 0.017 | −0.076 | 0.025 | |||
| (0.051) | (0.070) | (0.036) | ||||
| Constant | 2.75*** | 2.75*** | 1.59*** | 1.57*** | 0.262*** | 0.281*** |
| (0.098) | (0.104) | (0.119) | (0.121) | (0.048) | (0.043) | |
| Number of observations | 147 | 147 | 147 | 147 | 122b | 122 |
| Number of groups:country | 34 | 34 | 34 | 34 | 33 | 33 |
| R2 level 1 (within) | 0.000 | 0.000 | 0.000 | 0.0481 | 0.000 | 0.047 |
| R2 level 2 (between) | 0.0225 | 0.0253 | 0.0834 | 0.140 | 0.0017 | 0.177 |
GDP: gross domestic product.
Fraud allegations by Western monitors.
The number of observations in the last two models is lower because V-dem (Coppedge et al., 2019b) does not provide data for all cases.
Multilevel regression analysis, clustered by country with random effects. Robust standard errors in parentheses. P-values: †p < 0.1; *p < 0.05. **p < 0.01. ***p < 0.001.
Acknowledgements
The author thanks Jakub Lysek, Editor Justin Fisher and an anonymous reviewer for their insightful criticisms and constructive suggestions.
Declaration of conflicting interests
The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Funding
The author(s) received no financial support for the research, authorship and/or publication of this article.
