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I first learnt about the twin design during my MSc in Genes, Environment and Development at the SGDP, KCL. For my PhD, I used various twin models (in combination with Polygenic scores) to investigate mediation and causal relationships between sexual minority status and adverse mental and physical health indices; and moderation of these relationships by childhood factors. Currently, I practise as a psychiatrist in Nigeria and lecture undergraduate medical students.

Research Interests:

  • Behaviour genetics
  • Twin modelling
  • Structural equation modelling
  • Sexual orientation and mental health
  • Developmental psychopathology


  • The Chevening scholarship for a Master’s in the UK (2015)
  • The Commonwealth PhD scholarship (2018-2021)
  • The 2018-2019 King’s College London African Community of Practice Outstanding Achievement Award


Oginni, O. A., Alanko, K., Jern, P., & Rijsdijk, F. V. (2022). Increased depressive and anxiety symptoms in non-heterosexual individuals: moderation by childhood factors using a twin design. Journal of Affective Disorders, 297, 508-516.

Oginni, O. A., Jern, P., Rahman, Q., & Rijsdijk, F. V. (2021). Do psychosocial factors mediate sexual minorities’ risky sexual behaviour? A twin study. Health Psychology. Advance online publication.

Toseeb, U., Oginni, O. A., & Dale, P. S. (2020). Developmental Language Disorder and Psychopathology: Disentangling Shared Genetic and Environmental Influences. Journal of Learning Disabilities, 00222194211019961.

Oginni, O. A., Jern, P., & Rijsdijk, F. V. (2020). Mental health disparities mediating increased risky sexual behavior in sexual minorities: A Twin Approach. Archives of Sexual Behavior, 49(7), 2497-2510.

Oginni, O. A., Robinson, E. J., Jones, A., Rahman, Q., & Rimes, K. A. (2019). Mediators of increased self-harm and suicidal ideation in sexual minority youth: A longitudinal study. Psychological Medicine, 49(15), 2524-2532.

Oginni, O. A., Mosaku, K. S., Mapayi, B. M., Akinsulore, A., & Afolabi, T. O. (2018). Depression and associated factors among gay and heterosexual male university students in Nigeria. Archives of Sexual Behavior, 47(4), 1119-1132.

Jones, A., Robinson, E., Oginni, O., Rahman, Q., & Rimes, K. A. (2017). Anxiety disorders, gender nonconformity, bullying and self‐esteem in sexual minority adolescents: Prospective birth cohort study. Journal of Child psychology and Psychiatry, 58(11), 1201-1209.