About Me

Welcome to my website! I’m a sociologist and health researcher with more than 30 years experience in academic and non-academic environments. My publications in professional outlets number more than 100, along with 10 books, more than a dozen reports, and other formats.I conduct research on topics such as adolescent and adult substance use, illegal behaviors, mental health challenges, entheogens, sacred plant medicines, and religion and spirituality. I have developed and directed several large and small research projects as part of my grant and mentoring work.My areas of proficiency include data management and presentation, a wide array of statistical models, machine learning, statistical software (R, Stata, and Python), research methods, qualitative interviewing, grant preparation, teaching and training, and writing for academic and non-academic audiences.You may find links to my ORCID, Google Scholar, ResearchGate, Github, and LinkedIn sites below.

Sample Publications

• Hoffmann, John P. 2024. “Family Structure, Unstructured Socializing, and Delinquent Behavior.” Journal of Criminal Justice.

• Jones, Melissa S., and John P. Hoffmann. 2024. “Measuring Adverse Childhood Experiences with Latent Class Trajectories.” Child Abuse & Neglect.

• Hoffmann, John P. 2023. “Parent-Child Relations, Religiousness, and Adolescent Substance Use Disorders.” Journal of Drug Issues 53(2): 335-356.

• Hoffmann, John P. 2022. Linear Regression Models: Applications in R. Boca Raton, FL: CRC Press.

• Hoffmann, John P., and Melissa S. Jones. 2022. “Cumulative Stressors and Adolescent Substance Use: A Review of Twenty-First Century Literature.” Trauma, Violence & Abuse 23(3): 891-905.

• Hoffmann, John P. 2021. “Social Learning, Social Bonds, Self-Control, and Adolescent Nicotine Vaping.” Substance Use & Misuse 56(6): 819-830.

• Hoffmann, John P. 2017. Principles of Data Management and Presentation. Berkeley, CA: University of California Press.

• Hoffmann, John P., Christopher G. Ellison, and John P. Bartkowski. 2017. “Conservative Protestantism and Attitudes Toward Corporal Punishment, 1986-2014.” Social Science Research 63: 81-94.

• Hoffmann, John P. 2016. Regression Models for Categorical, Count, and Related Variables: An Applied Approach. Berkeley, CA: University of California Press.

• Hoffmann, John P. 2014. “Religiousness, Social Networks, Moral Schemas, and Marijuana Use: A Dynamic Dual-Process Model of Culture and Behavior.” Social Forces 93(1): 181-208.

• Hoffmann, John P. (Ed.). 2011. Understanding Religious Ritual: Theoretical Approaches and Innovations. New York, NY: Routledge.

• Hoffmann, John P. 2011. Delinquency Theories: Appraisals and Applications. New York: Routledge.

Current & Recent Projects

• Spiritual Journeys & Spirituality Groups

Adverse Childhood Experiences (ACEs) and Health & Behavioral Challenges in Adolescence & Young AdulthoodDoes Substance Use/Problem Use Affect Religious Participation & Spirituality Over the Life Course?Family Structure, Shared Households, and Adolescent Health and Well-BeingRational Substance Use?

• ORCID
• Google Scholar
• ResearchGate
• GitHub
• LinkedIn
• Email