His research interests are in Clinical Neuropsychology and in the epigenetics of psychiatric disorders.
• Lim, K., Rapisarda, A., Keefe, R.S.E., Lee, J. (2021). Social skills, negative symptoms and real-world functioning in individuals at Ultra-High Risk of psychosis. Asian Journal of Psychiatry, 102732.
• Lim, K., Peh, O.H., Yang, Z., Rekhi, G., Rapisarda, A., See, Y.M., Rashid, N.A.A., Ang, M.S., Lee, S.A., Sim, K. and Huang, H. (2021). Large-Scale Evaluation of the Positive and Negative Syndrome Scale (PANSS) Symptom Architecture in Schizophrenia. Asian Journal of Psychiatry, 102732.
• Jumat, M.R., Chow, P., Allen, J.C., Lai, S.H., Hwang, N.C., Iqbal, J., Mok, M.U.S., Rapisarda, A., Velkey, J.M., Engle, D.L., Compton, S. (2020). Grit protects medical students from burnout: a longitudinal study. BMC Medical Education, 20, 1-9.
• Peh, O.H., Rapisarda, A., & Lee, J. (2020). Quality of parental bonding is associated with symptom severity and functioning among individuals at ultra-high risk for psychosis. Schizophrenia research, 215, 204-210.
• Peh, O.H., Rapisarda, A., Lee, j. (2019). Childhood adversities in people at ultra-high risk (UHR) for psychosis: a systematic review and meta-analysis. Psychological Medicine, 49(7), 1089-1101.
• Lam, M., Lee, J., Rapisarda, A., See, YM., Yang, Z., Lee, SA., Abdul-Rashid, NA., Kraus, M., Subramaniam, M., Chong, SA., Keefe, RSE. (2018). Longitudinal cognitive changes in young individuals at ultrahigh risk for psychosis. JAMA Psychiatry, 75(9), 929-939. • Rapisarda, A., Lim, K., Lee, J. (2017). Does cannabis consumption negatively affect cognition? A review of the scientific evidence. ASEAN Journal of Psychiatry, 18(2), 82-93.
• Ang, M.S., Abdul Rashid, N.A., Lam, M., Rapisarda, A., Kraus, M., Keefe, R.S.E., Lee, J. (2017). The impact of medication anticholinergic burden on cognitive performance in people with schizophrenia. Journal of Clinical Psychopharmacology, 37(6), 651-656. • Lam, M., Wang, M., Huang, W., Eng, G.K., Rapisarda, A., Kraus, M., Kang, S., Keefe, R.S.E. and Lee, J. (2017). Establishing the Brief Assessment of cognition-Short form. Journal of Psychiatric Research, 93(10), 1-11. • Rekhi, G., Rapisarda, A. and Lee, J. (2017). Impact of distress related to attenuated psychotic symptoms in individuals at ultra-high risk of psychosis: Findings from the Longitudinal Youth at Risk Study. Early Intervention in Psychiatry, 1-6. • Kraus, M., Rapisarda, A., Lam, M., Thong, J. Y., Lee, J., Subramaniam, M., ... & Keefe, R. S. (2016). Disrupted latent inhibition in individuals at ultra-high-risk for developing psychosis. Schizophrenia Research: Cognition, 6, 1-8.
• Lim, J., Lee, S.A., Lam, M., Rapisarda, A., Kraus, M., Keefe, R. S., & Lee, J. (2016). The relationship between negative symptom subdomains and cognition. Psychological Medicine, 1, 1-9.
• Lim, J., Rekhi, G., Rapisarda, A., Lam, M., Kraus, M., Keefe, R. S., & Lee, J. (2015). Impact of psychiatric comorbidity in individuals at Ultra High Risk of psychosis—Findings from the Longitudinal Youth at Risk Study (LYRIKS). Schizophrenia Research, 162(1-3), 79-85.
• Lam, M., Collinson, S.L., Eng, G.K., Rapisarda, A., Kraus, M., Lee, J., Chong, S.A., Keefe, R.S.E (2014). Refining the latent structure of neuropsychological performance in schizophrenia. Psychological Medicine, 44(16), 3557-3570.
• Marx, C.E., Lee, J., Subramaniam, M., Rapisarda, A., Bautista, D.C., Chan, E., Kilts, J.D., Buchanan, R.W., Wai, E.P., Verma, S., Sim, K., Hariram, J., Jacob, R., Keefe, R.S.E., Chong, S.A. (2014). Proof-of-concept randomized controlled trial of pregnenolone in schizophrenia. Psychopharmacology, 231(17), 3647-3662.
• Rapisarda, A., Kraus, M., Tan, Y.W., Lam, M., Eng, G.K., Lee, J., Subramaniam, M., Collinson, S.L., Chong, S.A., Keefe, R.S.E (2014). The Continuous Performance Test, Identical Pairs: norms, reliability and performance in healthy controls and patients with schizophrenia in Singapore. Schizophrenia Research, 156(2-3), 233-240.
• Lee, J., Rekhi, G., Mitter, N., Bong, Y. L., Kraus, M. S., Lam, M., Rapisarda, A., Lee, T, Subramaniam, M., Chong, S.A., Keefe, R.S.E. (2013). The Longitudinal Youth at Risk Study (LYRIKS)—An Asian UHR perspective. Schizophrenia research, 151(1), 279-283.
• Eng, G.K., Lam, M., Bong, Y.L., Subramaniam, M., Bautista, D., Rapisarda, A., Kraus, M., Lee, J., Collinson, S.L., Chong, S.A., Keefe, R.S.E. (2013). Brief Assessment of Cognition in Schizophrenia: Normative Data in an English-Speaking Ethnic Chinese Sample. Archives of Clinical Neuropsychology, 28(8), 845-858.
• Lam, M., Eng, G.K., Rapisarda, A., Subramaniam, M., Kraus, M.S., Keefe, R.S.E., Collinson, S.L. (2013). Formulation of the age-education index: Measuring age and education effects in neuropsychological performance. Psychiatry Assessment, 25(1), 61-70.
• Rapisarda, A., Lim, T., Lim, M., Collinson, S.L., Kraus, M.S., Keefe, R.S.E. (2013). Applicability of the MATRICS Consensus Cognitive Battery in Singapore. The Clinical Neuropsychologist, 27(3), 455-469.