Purposive sampling is nonrandom sampling. Other terms are convenience, haphazard, and purposeful. In the social sciences, nonrandom sampling is the norm in most publications. Using the synonyms provided, you should find more articles than you can ever read.

Try SCOPUS and use these search terms;

TITLE-ABS-KEY ( "purposive sampling" ) AND ( "Pearson" ) AND ( "leadership" ) AND ( "burnout" )

Here are some articles:

• Aziz, A. R. A., Sulaiman, S., & Razak, N. H. A. (2020). Students' emotional intelligence and self-efficacy towards their academic performance: A survey study on public higher learning institution. Universal Journal of Educational Research, 8(11C), 126-135. https://doi.org/10.13189/ujer.2020.082315
• Chen, H.-T., & Wang, C.-H. (2019). Incivility, satisfaction and turnover intention of tourist hotel chefs: Moderating effects of emotional intelligence. International Journal of Contemporary Hospitality Management, 31(5), 2034-2053. https://doi.org/10.1108/IJCHM-02-2018-0164
• Xu, A., Ayub, A., & Iqbal, S. (2022). “When” and “why” employees resort to remain silent at work? A moderated mediation model of social undermining. Journal of Organizational Change Management, 35(3), 580-602. https://doi.org/10.1108/JOCM-11-2021-0332
• Sowmya, K. R., Krithika, J., & Jagannathan, K. (2022). Organisational politics and turnover intention: Challenges faced by women in leadership positions. World Review of Entrepreneurship, Management and Sustainable Development, 19(1-2), 110-120. https://doi.org/10.1504/wremsd.2023.127247
• Ramaswamy, M., Viswanathan, R., Kaniyarkuzhi, B., & Neeliyadath, S. (2023). A re-engagement model to overcome the psychological distress of students. International Journal of Evaluation and Research in Education, 12(4), 1973-1984. https://doi.org/10.11591/ijere.v12i4.24553
• Emirie, T. B., & Mengistu Gebremeskel, M. (2024). The prevalence and effect of destructive leadership behavior on teachers’ organizational commitment in the post-COVID-19 period: A case study of secondary schools in Amhara Regional State. Cogent Education, 11(1), Article 2392426. https://doi.org/10.1080/2331186X.2024.2392426
• Mohamad, N. I., Rahman, I. A., Zainol, N. A. M., Dzulkalnine, N., & Hasan, H. (2024). Factors influencing job satisfaction among academic and nonacademic staff: The case of SIMAD University. International Journal of Advanced and Applied Sciences, 11(11), 37-47. https://doi.org/10.21833/ijaas.2024.11.0.37
• Harrilall, S., & De Beer, L. T. (2024). The impact of (in)civility on selected individual and organisational outcomes in financial services. SA Journal of Human Resource Management, 22, a2752. https://doi.org/10.4102/sajhrm.v22i0.2752
• Terry, L., Bowman, K., & West, R. (2019). Becoming and being an environmentally ‘woke’ nurse: A phenomenological study. Nursing Outlook, 67(6), 725-733. https://doi.org/10.1016/j.outlook.2019.04.011
• Čopková, R. (2022). The role of different learning styles in students’ self-regulated learning. Journal of Educational Psychology, 114(3), 345-360. https://doi.org/10.1037/edu0000598
• Vaismoradi, M., Bondas, T., Salsali, M., Jasper, M., & Turunen, H. (2023). The impact of COVID-19 lockdowns on student engagement and psychological distress in higher education institutions in India. International Journal of Evaluation and Research in Education, 12(4), 1985-1995. https://doi.org/10.11591/ijere.v12i4.24554
• Chen, H.-T., & Wang, C.-H. (2019). Incivility, satisfaction and turnover intention of tourist hotel chefs: Moderating effects of emotional intelligence. International Journal of Contemporary Hospitality Management, 31(5), 2034-2053. https://doi.org/10.1108/IJCHM-02-2018-0164
• Sedghi Goyaghaj, N., Zoka, A., & Mohsenpour, M. (2022). Moral sensitivity and moral distress correlation in nurses caring for patients with spinal cord injury. Clinical Ethics, 17(1), 51-56. https://doi.org/10.1177/1477750921994279
• Mohamud, A. H., Barre, G. M., & Mohamud, I. H. (2024). Factors influencing job satisfaction among academic and nonacademic staff: The case of SIMAD University. International Journal of Advanced and Applied Sciences, 11(11), 37-47. https://doi.org/10.21833/ijaas.2024.11.0.37
• Ramaswamy, M., Viswanathan, R., Kaniyarkuzhi, B., & Neeliyadath, S. (2023). A re-engagement model to overcome the psychological distress of students. International Journal of Evaluation and Research in Education, 12(4), 1973-1984. https://doi.org/10.11591/ijere.v12i4.24553
• Sowmya, K. R., Krithika, J., & Jagannathan, K. (2022). Organisational politics and turnover intention: Challenges faced by women in leadership positions. World Review of Entrepreneurship, Management and Sustainable Development, 19(1-2), 110-120. https://doi.org/10.1504/wremsd.2023.127247
• Harrilall, S., & De Beer, L. T. (2024). The impact of (in)civility on selected individual and organisational outcomes in financial services. SA Journal of Human Resource Management, 22, a2752. https://doi.org/10.4102/sajhrm.v22i0.2752
• Terry, L., Bowman, K., & West, R. (2019). Becoming and being an environmentally ‘woke’ nurse: A phenomenological study. Nursing Outlook, 67(6), 725-733. https://doi.org/10.1016/j.outlook.2019.04.011
• Čopková, R. (2022). The role of different learning styles in students’ self-regulated learning. Journal of Educational Psychology, 114(3), 345-360. https://doi.org/10.1037/edu0000598
• Vaismoradi, M., Bondas, T., Salsali, M., Jasper, M., & Turunen, H. (2023). The impact of COVID-19 lockdowns on student engagement and psychological distress in higher education institutions in India. International Journal of Evaluation and Research in Education, 12(4), 1985-1995. https://doi.org/10.11591/ijere.v12i4.24554
• Here's a Google NotebookLM audio Deep Dive: https://jumpshare.com/v/GSOFtS6v6jZMyWlWEABB (I've added a link to the CSV file as a comment to the Deep Dive if you want to look at the other papers)

Finding a study that specifically combines non-probability sampling with Pearson’s r correlation might require a targeted search.

Here’s is some advice that might help you:

Define Search Keywords:

Use phrases like:

"Non-probability sampling Pearson correlation" "Convenience sampling Pearson r correlation" "Non-random sampling correlation analysis" "Leadership skills burnout correlation" "Pearson correlation academic burnout"

Focus on Non-Probability Sampling Types:

Studies using:

Convenience sampling Purposive sampling Snowball sampling These methods fall under non-probability sampling and are often used in social sciences.

Example Study Structures to Look For:

Convenience Sampling and Pearson’s r: A study might analyse the relationship between two psychological or social variables using convenience sampling due to limited resources or access.

Example Topic: "The Relationship Between Emotional Intelligence and Academic Burnout Among College Students Using Convenience Sampling."

Methodology Insight: These studies often justify using non-probability sampling because the participants represent a specific subgroup.