Psychometrics and psychological test development; Scale construction and validation; Experience Sampling Methodology (ESM); Affect dynamics and emotion research; Anger and emotion regulation; Personality psychology; Social identity and social dominance theories; Intergroup relations; Social and political attitudes; Individual differences and voting behavior 

Ph.D. in Psychology, University of the Philippines - Diliman, 2022 

Del Pilar, G. E. H., Sio, C. P., Cagasan, L. P., Siy, A. C., Galang, A. J. R. (2016). Masaklaw na Panukat ng Loob: Professional manual. Quezon City, Philippines: Office of the Vice Chancellor for Research and Development, University of the Philippines Diliman.

Mendoza, G. V. & Sio, C. P. (2018). Metodo ng Experience Sampling sa Konteksto ng Sikolohiyang Pilipino. DIWA E-Journal, 6,  1-18. https://www.pssp.org.ph/diwa/wp-content/uploads/2018/11/1-Artikulo-Mendoza-Sio1.pdf

Tongco-Rosario, G. R. N., Sio, C. P., & Soriano, J. (2024). Investigations on anger experience with other basic emotions using Affective Ising Model. In Proceedings of the 17th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2024) – Volume 2: HEALTHINF (pp. 738–745). SciTePress. https://doi.org/10.5220/0012470300003657

Consultant and research collaborator in psychometric scale development, psychological assessment, and quantitative research methods

Sio, C. P., Quinoñes, D. M. A., Lanuzo, S., Gabonada, A., & Albia, A. (2026, April 27-29). Personality traits, ideological beliefs, and the support for political dynasties [Paper presentation]. 2026 Philippine Political Science Association Conferennce, Dumaguete City, Philippines.

Sio, C. P. & Mendoza, G. V. (2025, March 24-29). Sad and Neurotic, Happy and Extraverted? Not Quite: Novel Insights into Real-Time Emotions and the Big Five [Paper presentation]. 15th Asian Conference on Psychology & the Behavioral Sciences, Tokyo, Japan.

Sio, C. P. & Mendoza, G. V. (2024, August 5-9). (Dis)Locating Experience of Anger in Five-Factor Space [Paper presentation]. 27th International Congress of the International Association for Cross-Cultural Psychology, Denpasa, Bali, Indonesia. 

Building Expertise: Education for Competencies in Instrument Development and Validation
Workshop Facilitator. Assessment Psychology Division, Psychological Association of the Philippines. Online via Zoom. April 25, 2026.

Reimagining Research Practices Through Mobile Experience Sampling
Workshop Facilitator. 13th National Conference on Research in Teacher Education, UP College of Education. Benitez Hall, University of the Philippines Diliman. November 29, 2025.

Real-Time, Real-World, Real Feelings: Capturing the Pulse of Everyday Emotions
Resource Speaker. Office for Initiatives in Culture and the Arts, University of the Philippines Diliman, and DAMÁ: Emotion Research Group. Lagmay Hall, University of the Philippines Diliman. October 16, 2025.

Orientation on the Test Item Writing Guidelines for the National Career Assessment Examination (NCAE)
Resource Speaker. Department of Education. DepEd Central Office, University of the Philippines Diliman. August 28, 2025.

Culturally Sensitive Psychological Measurement: Shifting to Advanced Methods with Experience Sampling
Workshop Facilitator. Assessment Psychology Division, Psychological Association of the Philippines. Online via Zoom. June 5–6, 2025.