World Rankings - In March 2021 Ray was informed that Stanford University and the major publisher Elsevier had created a database of 160,000 top scientists, providing data on the global influence of academic research using a variety of impact metrics such as: citations, h-index and the co-authorship hm-index. Data were analysed for (a) career-long (until the end of 2019) and (b) single year (i.e., 2019) impact. Ray’s name was included in (a) the top 2% of scientists regarding data based across their career and (b) in the top 4% of scientists based on the citation year 2019.

• Wang, X., Hongwei, Z., & BULL, R. (2023). Understanding perceived legitimacy of correctional officers among male juvenile offenders in China from a system perspective. nternational Journal of Law, Crime and Justice.
• BULL, R. (2023). Improving the interviewing of suspects using the PEACE model:
  A comprehensive overview. Canadian Journal of Criminology and Criminal Justice.
• Chin, J., Milne. R., & BULL, R. (2022). Fuelling an investigative mindset: the importance of pre-interview planning in police interviews with suspects. Psychology, Crime and Law
• van Beek, M., BULL, R., & Mijalkovic, S. (2022). A free account or not? Its effect upon information yield in strategic interviews with suspects. Journal of Investigative Psychology and Offender Profiling, 19, 261-278.
• de Abreu, D., Weber, W., Imed, C., Stein, L., & BULL, R. (2022). Interviewing suspects: Practices in Brazil. Investigative Interviewing: Research and Practice, 12, 40-52.
• Gajadhar, S., & BULL, R. (2022). Experts’ views on improving the quality of non-stranger rape complainants’ accounts. The Police Journal: Theory, Practice and Principles
• Baker-Eck, B., & BULL, R. (2022). Effects of empathy and question types on suspects’ provision of information in investigative interviews. International Journal of Police Science and Management, 24, 406-416.
• Tudor-Owen, J., van Golde, C., BULL, R., & Gee, D. (2022). Interviewing vulnerable suspects: Safeguarding the process. Routledge.
• Launay, C., Brunel, M., & BULL, R. (2022). What do police interview eyewitnesses for? A review. Policing: A Journal of Policy and Practice, 16, 602-614.
• Van Beek, M., BULL, R., & Chen, M. (2021). When the evidence is incorrect: An exploration of what happens when interviewers unwittingly present inaccurate information in interviews with suspects. Journal of Police and Criminal Psychology, 36, 769-782.
• Cacuci, S., BULL, R., Huang, C-Y., & Visu-Petra, L. (2021). Criteria-Based content analysis in child sexual abuse cases: A cross-cultural perspective. Child Abuse Review, 30, 520–535.
• Cleary, H., & BULL, R. (2021). Contextual factors predict self-reported confession decision-making: A field study of Suspects’ actual police interrogation experiences. Law and Human Behavior, 45, 310-323.
• Leahy-Harland, S., & BULL, R. (2021). The impact of context on real-life serious crime interviews with suspects. Police Practice and Research, 22, 1009-1026. 020.1848565.
• Huang, C-Y., & BULL, R. (2021). Applying hierarchy of expert performance (HEP) to investigative interview evaluation: Strengths, challenges, and future directions. Psychiatry, Psychology and Law, 28, 255-273.
• Sandham, A., Dando, C., BULL, R., & Ormerod. T. (2021). Improving professional observers’ veracity judgements by tactical interviewing. Journal of Police and Criminal Psychology, 37, 279-287.
• Baker-Eck, B., BULL, R., & Walsh, D. (2021). Investigative empathy: Five types of cognitive empathy in a field study of investigative interviews with suspects of sexual offences. Investigative Interviewing: Research and Practice, 11, 28-38.
• Zeng, F., Huang, C-Y., & BULL, R. (2021). Police interviews of suspects in China: Developments and analyses. International Journal of Police Science and Management, 23, 29-41.
• Baker-Eck, B., BULL, R., & Walsh, D. (2021). Investigative empathy: Five types of cognitive empathy in a field study of investigative interviews with suspects of sexual offences. Investigative Interviewing: Research and Practice, 11, 28-38.
• Huang, C-Y., & BULL, R. (2021). Applying hierarchy of expert performance (HEP) to investigative interview evaluation: Strengths, challenges, and future directions.Psychiatry, Psychology and Law.
• Leahy-Harland, S., & BULL, R. (2021). The impact of context on real-life serious crime interviews with suspects. Police Practice and Research, 22, 1009-1026.
• Milne, R., Shawyer, A., Dalton, G., May, B., Nunan, J., and BULL, R. (2021). Research based practice: Communication at the front-line. In L. R. Shapiro, and M-H. Maras (Eds.), Encyclopedia of security and emergency management New York: Springer.
• Sandham, A., Dando, C., BULL, R., & Ormerod. T. (2021). Improving professional observers’ veracity judgements by tactical interviewing. Journal of Police and Criminal Psychology
• Zeng, F., Huang, C-Y., & BULL, R. (2021). Police interviews of suspects in China: Developments and analyses. International Journal of Police Science and Management