(W1) Challenging socioeconomic status A cross‐cultural comparison of early executive

1. Introduction

  • Socioeconomic status (SES) significantly impacts child development, affecting resources, opportunities, and risks.

  • In this study, the SES gradient of executive function (EF) among preschoolers in South Africa and Australia was analyzed to explore cross-cultural differences.

2. Background

2.1 Understanding SES

  • SES incorporates factors such as disposable income, housing, and access to healthcare.

  • Meta-analyses reveal that SES correlates with academic performance, mental health, and substance use across different life stages.

  • EFs are crucial cognitive skills related to impulse control, working memory, and cognitive flexibility, playing a role in later life outcomes.

2.2 Existing Research Gaps

  • Most SES-EF research is conducted within single countries, mainly high-income countries (HICs).

  • This study seeks to evaluate the replicability of the EF-SES gradient across cultures and potentially identify protective factors in low- and middle-income countries (LMICs).

3. Study Methods

3.1 Participants

  • Sample: 1,092 preschoolers aged 3-5 from South Africa and Australia.

  • SES was defined using government area-level quintiles from census data.

3.2 Measures

  • EF assessments utilized the Early Years Toolbox, comprising:

    • Mr. Ant: Working memory task.

    • Go/No-Go: Inhibition task.

    • Card Sort: Cognitive flexibility task.

  • Assessment was standardized through an iPad with translation in children’s native languages.

3.3 Procedure

  • Tasks conducted in focused settings by trained researchers, ensuring minimal disruption.

  • All participants provided consent through their parents, following ethical guidelines.

4. Results

4.1 EF by SES Quintile

  • Analysis showed expected within-country SES effects in Australia and South Africa:

    • Australia: Higher SES linked to better performance in EFs.

    • South Africa: Notable differences in EF performance with high performance from disadvantaged groups.

4.2 Comparative Analysis

  • South African preschoolers outperformed Australian peers in inhibition and cognitive flexibility despite lower SES, challenging common assumptions about EF performance based on SES context.

4.3 Statistical Findings

  • Adjusted means indicated significant performance differences in favor of South African children:

    • Working Memory: SA (1.51) vs. AUS (1.34)

    • Inhibition: SA (0.60) vs. AUS (0.50)

    • Cognitive Flexibility: SA (5.26) vs. AUS (3.36)

5. Discussion

5.1 Interpretation of Findings

  • Results question the assumption of universally lower EF in LMICs and suggest the presence of EF-promoting cultural practices in South Africa.

  • Cultural expectations and responsibilities placed on children in South Africa may enhance EF development through constant EF challenges in real-world situations.

5.2 Implications for Future Research

  • Identifying factors contributing to higher EF in disadvantaged South African communities can inform theories on EF development.

  • Future studies should include diverse SES indicators and broader sampling to explore EF in LMICs further.

  • Potential factors to investigate include parental practices, environmental aspects, and community support systems.

6. Conclusion

  • The study highlights the need for a nuanced understanding of EF development, particularly in cross-cultural contexts, and supports future longitudinal studies in various socioeconomic and cultural settings.