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Hire ANTONIO M.

Mexico

USD 65 /hr

Senior Psychometrician & Data Scientist (R Expert) | 17+ Years in High-Stakes Testing & Quality Assurance

Profile Summary

With over 17 years of experience in psychometrics and educational measurement, I specialize in the rigorous design, standardization, and statistical validation of psychological and educational instruments. Currently serving as the Head of Technical Quality at the National Center for Evaluation for Higher Education (Ceneval) in Mexico, I oversee the technical integrity of large-scale national exams. My core expertise includes: Advanced Statistical Analysis: Expert proficiency in R and Excel for complex data modeling. Psychometrics: Deep mastery of Item Response Theory (IRT), Classical Test Theory (CTT), Structural Equation Modeling (SEM), and Differential Item Functioning (DIF). Test Development: Proven track record in the standardization of psychological tests (collaborating with publishers like Manual Moderno) and norm-referenced assessments. Quality Assurance: Designing protocols to ensure validity, reliability, and fairness in assessment. Whether you need to validate a new scale, run advanced psychometric models in R, or audit the quality of an assessment project, I bring institutional-level rigor to your project. I also have experience in technical documents translating (Manual Moderno and De Antunano & Asoc.)

Subject Matter Expertise

• ☆ Cognitive Science
• ☆ R
• ☆ Technical & Scientific Writing
• ☆ Instructional Materials

Services

• Writing
• Research
• Consulting
• Data & AI
• Product Development

Writing Clinical Trial Documentation, Translation

Research Scientific and Technical Research, Systematic Literature Review

Consulting Scientific and Technical Consulting

Data & AI Predictive Modeling, Statistical Analysis, Algorithm Design-ML, Data Visualization, Big Data Analytics

Product Development Quality Assurance & Control (QA/QC)

Work Experience

Asesor estadístico en la estandarización de instrumentos

Editorial El Manual Moderno

March 2014 - Present

Head of the Technical Quality Department

Centro Nacional de Evaluación para la Educación Superior S.C.

February 2007 - Present

Instructor

Universidad Nacional Autónoma de México

February 2013 - November 2016

Profesor

Universidad Nacional Autónoma de México

February 2015 - November 2015

Education

Licenciado en psicología (Facultad de Psicología)

Universidad Nacional Autónoma de México

August 1997 - June 2002

Certifications

• Professional fundamentals of generative AI

  Microsoft

  https://www.linkedin.com/learning/certificates/f7b8448734b4247ae8c796d659928e5c5c5a00359086b4f833f9e1c8e4f88ce9?trk=share_certificate&lipi=urn:li:page:d_flagship3_profile_view_base_certifications_details;aqbKA9/VSG+aJYgzrfDOsQ==

  November 2025 - Present

• Learning Big Data: Data Analysis

  LinkedIn Learning

  https://www.linkedin.com/learning/certificates/cd4a308541cd1fe8da2b5f27a25cd436452c92dd46af7ce3c4c366fa2b3f5aff?lipi=urn:li:page:d_flagship3_profile_view_base_certifications_details;yQ9HJf+USMCpbZM66cEvaw==

  November 2025 - Present

• Automatic Item Generation and validation Automatic Item Generation and validation

  Code Horizon

  September 2025 - Present

• Chromebook data science

  Leanpub

  April 2025 - Present

• EF SET English Certificate 76/100 (C2 Proficient)

  EF SET

  https://cert.efset.org/X889Rg

  April 2019 - Present

• Data Science Specialization

  Coursera/John Hopkins University

  https://www.coursera.org/account/accomplishments/specialization/VTGPHAL3CGUD

  December 2016 - Present

• Developing Data Products

  Coursera/John Hopkins University

  https://www.coursera.org/account/accomplishments/verify/ZV4326AMPZH8

  March 2016 - Present

• Practical Machine Learning

  Coursera/John Hopkins University

  https://www.coursera.org/account/accomplishments/verify/VXR4ST7FB9ZF

  February 2016 - Present

• Statistical Inference

  Coursera/John Hopkins University

  https://www.coursera.org/account/accomplishments/verify/QVV4LCRF85

  January 2016 - Present

Publications

JOURNAL ARTICLE

ANTONIO MARTINEZ, Andrómeda Ivette Valencia Ortiz(2022). Propiedades psicométricas del instrumento percepción de riesgo y conductas de autocuidado para la prevención del cáncer de mama . Conrado. 18. p. 353 - 359. scielocu

Fernando- Salinas-Quiroz, Antonio Martínez Pineda, Sandra Juliana Plata Contreras, Paola Elizabeth Silva Cabrera, Verónica Cambón Mihalfi, Wendolyn Cortes Rojas(2021). Mother Behavior Q-Set (MBQS)Dimensionalidad del Q-set del comportamiento materno en muestras de México, Colombia y Uruguay . Revista Iberoamericana de Psicología. 13. (3). p. 109--118. Corporacion Universitaria Iberoamericana

Salinas-Quiroz, F.-, Martínez Pineda, A., Plata Contreras, S. J., Silva Cabrera, P. E., Cambón Mihalfi, V., & Cortes Rojas, W. (2021). Mother Behavior Q-Set (MBQS)Dimensionalidad del Q-set del comportamiento materno en muestras de México, Colombia y Uruguay. Revista Iberoamericana De Psicología, 13(3), 109-118. https://doi.org/10.33881/2027-1786.rip.13307 .

Saldívar, J. A., Posadas, A., Rodríguez, R., Gómez, C., Hernández, M. E., Ortiz, S., Martínez, A., Gómez, D., Salgado, V., Manjarrez, J. y Alvarado, R. (2003). Effect of electrical stimulation of the basolateral amygdala nucleus on defensive burying shock probe test and elevated plus maze in rats. Life Sciences, 72 (7), pp. 819-829 .

Martínez, J. A. y Herrera, M. (2014). Propiedades psicométricas de la escala de cómputo para el EXANI-II. Revista Electrónica de Investigación Educativa, 16(2), 68-80. Recuperado de http://redie.uabc.mx/vol16no2/contenido-mtnez-herrera.html .

BOOK CHAPTER

León, R. y Martínez, J. A. (2012). Comunidades de conocimiento y el uso de las TIC en la educación. En E. J. Sánchez-Vanderkast (Coord.), La naturaleza objetiva y subjetiva de las Políticas de Información (Seminario de Investigación 18 Centro Universitario de Investigaciones Bibliotecológicas, pp. 161- 204). Ciudad Universitaria: UNAM.

Martínez, J. A. y León-Sánchez, R. (2013). Los usos de las TIC en la educación: conocimiento y dominio de estudiantes universitarios. En Z. Monroy, R. León-Sánchez y G. Álvarez (Eds.), Enseñanza de la ciencia. Ciudad Universitaria: Facultad de Psicología, UNAM.