All Stories

  1. Causal Effect Estimates of Online E-cigarette Marketing Exposure on Future E-cigarette Harm Perception and Use

    Article • Drug and Alcohol Dependence Reports, April 2026, Elsevier

    Paul Harrell

  2. Characteristics of Adolescents’ and Young Adults’ Exposure to and Engagement with Nicotine and Tobacco Product Content on Social Media

    Article • Journal of Health Communication, May 2024, Taylor & Francis

    Paul Harrell

  3. Causal inference in tobacco research: a public health challenge

    Article • Journal of Addictive Diseases, August 2023, Taylor & Francis

    Paul Harrell

  4. Measuring vaping-related expectancies in young adults: Psychometric evaluation of the Electronic Nicotine Vaping Outcomes (ENVO) scale

    Article • Drug and Alcohol Dependence, May 2023, Elsevier

    Paul Harrell

  5. Identifying prospective subpopulations of combustible and electronic cigarette dual users in the United States via finite mixture modeling

    Article • Addiction, May 2022, Wiley

    Professor Chris Bullen, Paul Harrell

  6. Emotion dysregulation, transdiagnostic vulnerabilities, and e-cigarette expectancies in a young adult sample

    Article • Addictive Behaviors, May 2022, Elsevier

    Paul Harrell

  7. Targeted smoking cessation for dual users of combustible and electronic cigarettes: a randomised controlled trial

    Article • The Lancet Public Health, July 2021, Elsevier

    Professor Chris Bullen, Paul Harrell

  8. Development of a Risk Behavior Diagnosis Scale for E-cigarette Use

    Article • American Journal of Health Behavior, March 2021, JCFCorp SG PTE LTD

    Paul Harrell

  9. Development of a Self-Help Smoking Cessation Intervention for Dual Users of Tobacco Cigarettes and E-Cigarettes

    Article • International Journal of Environmental Research and Public Health, February 2021, MDPI AG

    Professor Chris Bullen, Paul Harrell

  10. Rethink Vape: Development and evaluation of a risk communication campaign to prevent youth E-cigarette use

    Article • Addictive Behaviors, February 2021, Elsevier

    Paul Harrell

  11. Dripping Technology Use Among Young Adult E-Cigarette Users

    Article • Tobacco Use Insights, January 2021, SAGE Publications

    Paul Harrell

  12. Vaping, smartphones, and social media use among young adults: Snapchat is the platform of choice for young adult vapers

    Article • Addictive Behaviors, January 2021, Elsevier

    Paul Harrell

  13. Youth and Adult Arrests for Cannabis Possession After Decriminalization and Legalization of Cannabis

    Article • JAMA Pediatrics, August 2019, American Medical Association (AMA)

    Paul Harrell

  14. Erratum: How Does Smoking and Nicotine Dependence Change After Onset of Vaping? A Retrospective Analysis of Dual Users

    Article • Nicotine & Tobacco Research, June 2019, Oxford University Press (OUP)

    Professor Chris Bullen, Paul Harrell

  15. How Does Smoking and Nicotine Dependence Change After Onset of Vaping? A Retrospective Analysis of Dual Users

    Article • Nicotine & Tobacco Research, March 2019, Oxford University Press (OUP)

    Professor Chris Bullen, Paul Harrell

  16. Investigating the role of expectancy in caffeine withdrawal using the balanced placebo design

    Article • Human Psychopharmacology Clinical and Experimental, March 2019, Wiley

    Paul Harrell

  17. Vaping characteristics and expectancies are associated with smoking cessation propensity among dual users of combustible and electronic cigarettes

    Article • Addiction, February 2019, Wiley

    Professor Chris Bullen, Paul Harrell

  18. Longitudinal Analysis of Associations Between Reasons for Electronic Cigarette Use and Change in Smoking Status Among Adults in the Population Assessment of Tobacco and Health Study

    Article • Nicotine & Tobacco Research, January 2019, Oxford University Press (OUP)

    Paul Harrell

  19. Vaping Expectancies: A Qualitative Study among Young Adult Nonusers, Smokers, Vapers, and Dual Users

    Article • Substance Abuse Research and Treatment, January 2019, SAGE Publications

    Paul Harrell

  20. Basic Science and Public Policy: Informed Regulation for Nicotine and Tobacco Products

    Article • Nicotine & Tobacco Research, August 2017, Oxford University Press (OUP)

    Paul Harrell

  21. Automated dripping devices for vapers: RDTAs, bottomfeeders, squonk mods and dripboxes

    Article • Tobacco Control, July 2017, BMJ

    Paul Harrell

  22. A randomized controlled trial of a smoking cessation self-help intervention for dual users of tobacco cigarettes and E-cigarettes: Intervention development and research design

    Article • Contemporary Clinical Trials, June 2017, Elsevier

    Professor Chris Bullen, Paul Harrell

  23. The impact of adolescent exposure to medical marijuana laws on high school completion, college enrollment and college degree completion

    Article • Drug and Alcohol Dependence, November 2016, Elsevier

    Paul Harrell

  24. Patterns of youth tobacco and polytobacco usage: The shift to alternative tobacco products

    Article • The American Journal of Drug and Alcohol Abuse, September 2016, Taylor & Francis

    Paul Harrell

  25. Extended Self-Help for Smoking Cessation

    Article • American Journal of Preventive Medicine, July 2016, Elsevier

    Paul Harrell

  26. Commentary on Betts et al. (2016): Polysubstance use and opioid substitution therapy among people who inject drugs

    Article • Addiction, June 2016, Wiley

    Paul Harrell

  27. An Exploration of Alcohol use Severity and Route of Drug Administration among Persons that use Heroin and Cocaine

    Article • Substance Abuse, April 2016, SAGE Publications

    Paul Harrell

  28. Barriers To Research Using Controlled Drugs Are Not Created Equal

    Article • The American Journal of Bioethics, March 2016, Taylor & Francis

    Paul Harrell

  29. E-cigarette use in adults: a qualitative study of users’ perceptions and future use intentions

    Article • Addiction Research & Theory, February 2016, Taylor & Francis

    Paul Harrell

  30. Gender differences in use and expectancies of e-cigarettes: Online survey results

    Article • Addictive Behaviors, January 2016, Elsevier

    Paul Harrell

  31. Pain Symptoms Associated with Opioid Use among Vulnerable Persons with HIV: An Exploratory Study with Implications for Palliative Care and Opioid Abuse Prevention

    Article • Journal of Palliative Care, December 2015, SAGE Publications

    Paul Harrell

  32. Dopaminergic genetic variation moderates effect of nicotine on cigarette reward self-report

    Article • Drug and Alcohol Dependence, November 2015, Elsevier

    Paul Harrell

  33. Marijuana and Other Substance Use Among Motor Vehicle Operators: A Latent Class Analysis

    Article • Journal of Studies on Alcohol and Drugs, November 2015, Alcohol Research Documentation, Inc.

    Paul Harrell

  34. Dopaminergic genetic variation moderates the effect of nicotine on cigarette reward

    Article • Psychopharmacology, October 2015, Springer Science + Business Media

    Paul Harrell

  35. E‐cigarettes and expectancies: why do some users keep smoking?

    Article • Addiction, August 2015, Wiley

    Paul Harrell

  36. Electronic cigarettes in adults in outpatient substance use treatment: Awareness, perceptions, use, and reasons for use

    Article • American Journal on Addictions, March 2015, Wiley

    Paul Harrell

  37. Cigarette price variation around high schools: evidence from Washington DC

    Article • Health & Place, January 2015, Elsevier

    Paul Harrell

  38. Injection and non-injection drug use and infectious disease in Baltimore City: Differences by race

    Article • Addictive Behaviors, September 2014, Elsevier

    Paul Harrell

  39. Expectancies for Cigarettes, E-Cigarettes, and Nicotine Replacement Therapies Among E-Cigarette Users (aka Vapers)

    Article • Nicotine & Tobacco Research, August 2014, Oxford University Press (OUP)

    Paul Harrell

  40. Cigarette smoking and drug use among a nationally representative sample of HIV-positive individuals

    Article • American Journal on Addictions, July 2014, Wiley

    Paul Harrell

  41. A randomized clinical trial of self-help intervention for smoking cessation: Research design, interventions, and baseline data

    Article • Contemporary Clinical Trials, July 2014, Elsevier

    Paul Harrell

  42. Place and drug craving: An ecological momentary assessment study

    Article • Drug and Alcohol Dependence, July 2014, Elsevier

    Paul Harrell

  43. Electronic Nicotine Delivery Systems (“E‐cigarettes”): Review of Safety and Smoking Cessation Efficacy

    Article • Otolaryngology, June 2014, Wiley

    Paul Harrell

  44. The Influence of Religious Attendance on Smoking

    Article • Substance Use & Misuse, May 2014, Taylor & Francis

    Paul Harrell

  45. Cognitive performance profiles by latent classes of drug use

    Article • American Journal on Addictions, March 2014, Wiley

    Paul Harrell

  46. Latent class analysis of polysubstance use, sexual risk behaviors, and infectious disease among South African drug users

    Article • Drug and Alcohol Dependence, October 2013, Elsevier

    Paul Harrell

  47. A latent class approach to treatment readiness corresponds to a transtheoretical (“Stages of Change”) model

    Article • Journal of Substance Abuse Treatment, September 2013, Elsevier

    Paul Harrell

  48. Off-Premise Alcohol Outlets and Substance Use in Young and Emerging Adults

    Article • Substance Use & Misuse, August 2013, Taylor & Francis

    Paul Harrell

  49. The Role of Drinking Severity on Sex Risk Behavior and HIV Exposure among Illicit Drug Users

    Article • American Journal on Addictions, April 2013, Wiley

    Paul Harrell

  50. The Role of Drinking Severity on Sex Risk Behavior and HIV Exposure among Illicit Drug Users

    Article • American Journal on Addictions, March 2013, Wiley

    Paul Harrell

  51. Hallucinogens

    Article • January 2013, Elsevier

    Paul Harrell

  52. Development of the Caffeine Withdrawal Symptom Questionnaire: Caffeine withdrawal symptoms cluster into 7 factors

    Article • Drug and Alcohol Dependence, August 2012, Elsevier

    Paul Harrell

  53. Desistance from problematic alcohol use without treatment among active heroin and cocaine users

    Article • Addiction Research & Theory, July 2012, Taylor & Francis

    Paul Harrell

  54. Neighborhood Disorder and Juvenile Drug Arrests: A Preliminary Investigation Using the NIfETy Instrument

    Article • The American Journal of Drug and Alcohol Abuse, July 2012, Taylor & Francis

    Paul Harrell

  55. Polysubstance Use and Heroin Relapse Among Adolescents Following Residential Treatment

    Article • Journal of Child & Adolescent Substance Abuse, July 2012, Taylor & Francis

    Paul Harrell

  56. A Model of School Problems, Academic Failure, Alcohol Initiation, and the Relationship to Adult Heroin Injection

    Article • Substance Use & Misuse, May 2012, Taylor & Francis

    Paul Harrell

  57. Cigarette smoking, illicit drug use, and routes of administration among heroin and cocaine users

    Article • Addictive Behaviors, May 2012, Elsevier

    Paul Harrell

  58. Latent classes of heroin and cocaine users predict unique HIV/HCV risk factors

    Article • Drug and Alcohol Dependence, May 2012, Elsevier

    Paul Harrell

  59. Early onset of drug and polysubstance use as predictors of injection drug use among adult drug users

    Article • Addictive Behaviors, April 2012, Elsevier

    Paul Harrell

  60. A direct test of the influence of nicotine response expectancies on the subjective and cognitive effects of smoking.

    Article • Experimental and Clinical Psychopharmacology, January 2012, American Psychological Association (APA)

    Paul Harrell

  61. Caffeine Withdrawal Symptom Questionnaire

    Article • January 2012, American Psychological Association (APA)

    Paul Harrell

  62. Cigarette smoking and short-term addiction treatment outcome

    Article • Drug and Alcohol Dependence, June 2011, Elsevier

    Paul Harrell

  63. The influence of nicotine dose and nicotine dose expectancy on the cognitive and subjective effects of cigarette smoking.

    Article • Experimental and Clinical Psychopharmacology, January 2011, American Psychological Association (APA)

    Paul Harrell

  64. Rates of Heroin and Cocaine Use by Severity of Alcohol Consumption

    Article • January 2011, American Psychological Association (APA)

    Paul Harrell

  65. Caffeine expectancies influence the subjective and behavioral effects of caffeine

    Article • Psychopharmacology, September 2009, Springer Science + Business Media

    Paul Harrell

  66. Beck Depression Inventory for depression screening in substance-abusing adolescents

    Article • Journal of Substance Abuse Treatment, July 2009, Elsevier

    Paul Harrell