Joseph Saidu Sesay

Research Scientist & Educator in Quantitative Methods
Makeni, SL.

About

Highly accomplished Research Scientist and Educator with over a decade of experience in quantitative methods, psychometric instrument development, and educational research. Expertly developed and validated the MaSI instrument for assessing mathematical and statistical competencies in indigenous learning environments, demonstrating strong psychometric properties and significant impact. Leverages advanced statistical modeling (EFA, CFA, SEM) and data analysis to drive evidence-based pedagogical improvements and foster academic success in STEM fields.

Work

Ernest Bai Koroma University of Science and Technology
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Mathematics, Statistics, and Quantitative Techniques Instructor & Research Scientist

Makeni, Sierra Leone, Sierra Leone

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Summary

Led instruction in mathematics, statistics, and quantitative techniques while conducting psychometric research to develop and validate educational assessment instruments in indigenous learning environments.

Highlights

Developed and validated a contextually grounded instrument (MaSI) for assessing mathematical and statistical competencies, achieving strong psychometric properties with Cronbach's alpha values of 0.794 (test), 0.780 (development), and 0.853 (validation).

Conducted extensive data analysis using Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), and Structural Equation Modelling (SEM) on three independent national representative samples (N=504, 1,502, 373 participants) to establish construct validity and reliability.

Identified a high and significant correlation (0.7) between students' self-efficacy in statistical literacy and computer self-efficacy, emphasizing the critical role of technology in education.

Published research contributing valuable information for creating programs that support academic success and equity, particularly in the context of increasing reliance on AI, Machine Learning tools and statistical data applications.

Mentored and educated diverse cohorts of social science students over a decade, enhancing their quantitative reasoning skills and addressing learning challenges in mathematics and statistics.

Kwame Nkrumah University of Science and Technology
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Affiliated Researcher & Academic Contributor

Kumasi, Ashanti Region, Ghana

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Summary

Contributed to academic research and educational initiatives as an affiliated researcher in Statistics and Actuarial Science.

Highlights

Collaborated on inter-institutional research projects focusing on the psychometric evaluation of educational instruments and quantitative competency assessment.

Provided expertise in statistical methodology and data interpretation for studies aimed at improving academic performance and educational outcomes.

Engaged in academic discourse and contributed to the development of robust research frameworks for assessing complex psychological constructs in educational settings.

Education

Kwame Nkrumah University of Science and Technology
Kumasi, Ashanti Region, Ghana

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PhD

Statistics and Actuarial Science

Publications

Development and Validation of a Contextually Grounded Instrument for Assessing Mathematical and Statistical Competencies in Indigenous Learning Environments.

Published by

Academic Journal

Summary

This study developed and validated a contextually grounded instrument (MaSI) to measure psychological constructs influencing mathematics and statistical competencies in indigenous learning environments. Utilizing EFA, CFA, and SEM on three national samples (N=504, 1,502, 373), the instrument demonstrated strong psychometric properties and consistent factor equivalency. Key findings include a significant correlation (0.7) between statistical literacy and computer self-efficacy, and links between mathematics perceptions and statistical self-efficacy, providing a robust tool for enhancing teaching, inclusive education, and research in the context of AI and Machine Learning.

Languages

English

Skills

Statistical Analysis

Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), Structural Equation Modelling (SEM), Quantitative Analysis, Psychometrics, Data Analysis, Statistical Modeling, Hypothesis Testing, Correlation Analysis, Regression Analysis, IBM SPSS Statistics, AMOS.

Research & Methodology

Instrument Development, Validation, Survey Design, Data Collection, Academic Research, Educational Measurement, Theoretical Frameworks, Experimental Design, Psychometric Evaluation.

Education & Pedagogy

Mathematics Education, Statistics Education, Curriculum Development, Inclusive Education, Teaching Strategies, STEM Education, Digital Competencies, Self-Efficacy, Quantitative Reasoning.

Technology & Tools

Statistical Software, AI/Machine Learning (conceptual), Information and Communication Technology (ICT), Computer Self-Efficacy.

Academic Writing

Scientific Publication, Research Reporting, Literature Review.