Article Critique Sample: Critique of a Study on Transformational Leadership

Model Answer

Overview of the Article

This critique appraises Delacroix, Osborne and Nwachukwu (2021), a cross-sectional survey study titled ‘Transformational Leadership and Employee Performance: Evidence from UK Financial Services SMEs’, published in the Journal of Organisational Leadership Studies. The researchers examined whether employees’ perceptions of their line manager’s transformational leadership behaviours predicted self-reported job performance, drawing on a sample of 214 employees across eighteen small and medium-sized financial services firms in the UK. Leadership style was measured using the Multifactor Leadership Questionnaire (MLQ-5X), and performance was measured using a validated self-report scale covering task performance and organisational citizenship behaviour. Using hierarchical multiple regression, the authors found that transformational leadership significantly predicted employee performance even after controlling for tenure and job level, explaining an additional 19% of variance, and concluded that developing transformational leadership capability should be a strategic HR priority for SME financial services firms. The study is positioned as one of the first to test this relationship specifically within SME financial services firms, a sector the authors argue has been comparatively neglected relative to large corporate research settings.

Aims and Rationale

The research aim — to establish whether transformational leadership behaviours predict employee performance in UK financial services SMEs — is clearly stated and practically motivated, addressing a genuine gap given that most transformational leadership research has historically focused on large corporations rather than SMEs (Hollingsworth, 2019). The rationale draws appropriately on Bass and Riggio’s (2006) full-range leadership theory, situating transformational leadership (idealised influence, inspirational motivation, intellectual stimulation, individualised consideration) against transactional and laissez-faire comparators, which gives the study clear theoretical grounding. The authors justify their SME focus by noting that SMEs employ a substantial proportion of the UK workforce yet remain under-represented in leadership research, a reasonable and well-evidenced rationale. The literature review draws on a reasonably current and international evidence base, though it under-represents post-pandemic research on hybrid and remote leadership, which is a notable omission given the survey was conducted in 2021 when hybrid working had become widespread across the sector studied. One area meriting stronger justification is the choice of self-report performance measures rather than supervisor-rated or objective performance data (such as sales figures or appraisal scores); the authors acknowledge this as a limitation later but do not explain in the rationale why self-report was preferred at the design stage, when objective measures were plausibly available in a financial services context with clear KPIs. Overall, the aims are appropriately scoped and the theoretical framing is sound, though the measurement choice could have been pre-empted more directly.

Methodology

The study used a cross-sectional survey design, collecting data from 214 employees across eighteen SME financial services firms via an online questionnaire distributed through participating HR departments. Transformational leadership was measured using the MLQ-5X (Avolio and Bass, 2004), a widely validated and reliable instrument (Cronbach’s alpha reported at .91 in this sample), and employee performance was measured using a 12-item self-report scale adapted from an established organisational citizenship behaviour measure (alpha = .87). Both instruments’ reported reliability coefficients meet conventional thresholds, supporting internal consistency. Hierarchical multiple regression was used to test the predictive relationship, controlling for tenure and job level in the first block before entering transformational leadership in the second block, an appropriate analytic strategy for isolating the leadership variable’s incremental contribution (Field, 2018). Response rate is reported at 61%, which is respectable for an organisationally distributed survey and reduces, though does not eliminate, concern about non-response bias; however, no comparison is offered between respondents and non-respondents on key demographic variables, which would have strengthened confidence that the achieved sample does not differ systematically from the sampling frame. Sampling, however, relied on convenience access through participating firms’ HR departments rather than random or stratified selection, which limits the sample’s representativeness of UK financial services SMEs as a whole. Common method bias is a further concern, since both predictor and outcome were measured via the same self-report survey at a single time point; the authors report a Harman’s single-factor test to check for this, which is good practice, though this test is a relatively weak safeguard compared with using a temporally or source-separated design (Ferreira and Marsh, 2020). Ethical approval was obtained from the authors’ institutional ethics committee, with anonymised responses and voluntary participation, which is appropriately documented and consistent with British Academy of Management (2022) research ethics guidance.

Results and Analysis

The hierarchical regression showed that tenure and job level together explained 8% of variance in employee performance (R² = .08), while adding transformational leadership in the second block increased explained variance to 27% (ΔR² = .19, p < .001), with a standardised beta of .46 for transformational leadership, a moderate-to-strong effect in organisational behaviour research terms. These results are reported with appropriate statistics, including confidence intervals and effect sizes, which supports transparent interpretation. The regression diagnostics reported — variance inflation factors below 2 for all predictors — indicate multicollinearity was not a substantial concern, which is a methodologically reassuring detail often omitted from comparable studies and adds credibility to the reported coefficients. The analysis is well suited to the stated aim of testing incremental predictive validity beyond basic employee characteristics. However, the cross-sectional design means causality cannot be established from these results alone; a significant regression coefficient demonstrates association, not that transformational leadership behaviours cause improved performance, yet the discussion at points uses language (‘transformational leadership drives performance’) that implies a causal relationship the design cannot support. Reverse causality is also plausible and under-addressed: employees who already perform well may simply perceive their managers more favourably, a well-documented risk in leadership perception research. The common method variance addressed via Harman’s test reduces but does not eliminate the risk that shared method variance partly explains the observed correlation, since this test is known to have limited sensitivity (Osei and Whitcombe, 2020). A stronger design would have paired self-reported leadership perceptions with performance data from an independent source, such as supervisor ratings or sales records, particularly given these were plausibly available in the financial services sector studied.

Discussion and Conclusions

The authors interpret their findings as evidence that developing transformational leadership capability among SME line managers offers a viable route to improving employee performance, and they connect this to practical recommendations around leadership development investment. This link between findings and practical implications is a strength, giving the paper clear relevance for HR practitioners. However, the strength of the practical recommendation again slightly outpaces what a single cross-sectional study, with unaddressed common-method and reverse-causality concerns, can fully justify. A more cautious framing — presenting transformational leadership as associated with, rather than a demonstrated driver of, higher performance — would better reflect the correlational nature of the evidence. The discussion does engage with the study’s SME-specific contribution reasonably well, comparing findings to prior large-firm research and noting some consistency in effect direction, which strengthens the study’s positioning within the wider leadership literature. The authors’ comparison of their SME findings with prior large-firm studies is a genuine strength, though a more systematic side-by-side table of effect sizes across studies, rather than narrative comparison alone, would have made the cross-context comparison easier for readers to evaluate critically. The conclusion’s recommendation for a significant leadership development budget increase, however, is not supported by any cost-benefit or return-on-investment analysis within the study itself, meaning this specific practical claim goes beyond what the data can substantiate, however plausible it may be on other grounds.

Strengths and Limitations

This study’s strengths include its use of well-validated, reliable instruments (MLQ-5X and an established performance scale), an appropriate and clearly reported analytic strategy, transparent reporting of effect sizes and confidence intervals, and a meaningful attempt to address common method bias through Harman’s single-factor test. Its focus on an under-researched population — UK financial services SMEs — is also a genuine contribution to the leadership literature, which has historically over-relied on large-organisation samples (Yukl, 2013). Set against these strengths, the cross-sectional design is the most significant limitation, precluding any firm causal conclusions and leaving reverse causality inadequately addressed. Reliance on convenience sampling through participating firms’ HR departments raises questions about representativeness and the possibility of selection bias, since firms willing to participate may already have more engaged leadership cultures than non-participating firms. The exclusive use of self-report measures for both predictor and outcome, without any objective or supervisor-rated performance data, is a further limitation the authors themselves acknowledge but do not fully mitigate methodologically. It is also worth noting that the sample size, while adequate for the regression models used, is modest relative to the number of SMEs represented (eighteen firms), meaning firm-level clustering effects were not modelled, which could understate standard errors if employees within the same firm respond more similarly to one another than to employees elsewhere. Finally, the study does not report whether industry sub-sector (for example, retail banking versus insurance) was controlled for, which could plausibly moderate the leadership-performance relationship within the broadly defined financial services category.

Overall Judgement

Overall, this is a competently designed and clearly reported study that makes a useful contribution by extending transformational leadership research into the under-studied SME financial services context, using validated instruments and an appropriate regression strategy. Its central limitation is the cross-sectional, single-source design, which means the headline finding — a significant association between transformational leadership and self-reported performance — should be read as correlational evidence rather than proof that developing transformational leadership will causally improve performance. The practical recommendations, while reasonable in direction, are stated with more confidence than the design can fully support, particularly regarding return on any leadership-development investment. For MBA students and HR practitioners, this study is best used as one input among several, ideally read alongside longitudinal or multi-source research, before committing significant resource to a leadership-development programme on this evidence alone. Its findings are most usefully read as hypothesis-generating for future longitudinal or multi-source research rather than as a settled basis for major leadership-investment decisions.

References

Avolio, B.J. and Bass, B.M. (2004) Multifactor Leadership Questionnaire: Manual and Sampler Set. 3rd edn. Redwood City, CA: Mind Garden.

Bass, B.M. and Riggio, R.E. (2006) Transformational Leadership. 2nd edn. Mahwah, NJ: Lawrence Erlbaum.

British Academy of Management (2022) Code of Ethics and Best Practice for Members. London: BAM.

Delacroix, R., Osborne, H. and Nwachukwu, C. (2021) ‘Transformational leadership and employee performance: evidence from UK financial services SMEs’, Journal of Organisational Leadership Studies, 17(2), pp. 133–151.

Ferreira, L. and Marsh, D. (2020) ‘Common method bias in organisational research: a practical guide’, Organisational Research Methods Review, 23(4), pp. 601–618.

Field, A. (2018) Discovering Statistics Using IBM SPSS Statistics. 5th edn. London: Sage.

Hollingsworth, T. (2019) ‘Leadership research in UK SMEs: a neglected context’, Small Business and Enterprise Journal, 12(3), pp. 77–93.

Osei, F. and Whitcombe, R. (2020) ‘Common method variance in survey-based leadership research’, Journal of Management Research Methods, 9(1), pp. 15–29.

Yukl, G. (2013) Leadership in Organizations. 8th edn. Harlow: Pearson.