Department of Psychology

Jonathan Hammersley with family

Jonathan J. Hammersley, Ph.D.

Associate Professor and Advisor for Mental Health Minor

Education

Dr. Hammersley earned an M.A.and Ph.D. in Clinical Psychology from Southern Illinois University-Carbondale. He completed a pre-doctoral internship in the Department of Psychiatry at Indiana University School of Medicine and postdoctoral training in neurocognitive & neuropsych disability assessment. His dissertation was titled “Modulation of covert attention by emotion: Automatic processing of emotional versus neutral cues in a covert attention task.”

Jonathan Hammersley

Teaching

Dr. Hammersley regularly teaches courses in substance use (e.g., PSY 334 Perspectives on Substance Use, PSY434 Substance Abuse Treatment Approaches and Techniques) as well as Abnormal Psychology (PSY 424), Clinical Psychology (PSY 380), Psychology Field Experience (PSY 487/490), & graduate Applied Research (PSY 502). He also frequently supervises undergraduate or graduate independent studies.

Service

Recent service includes the grade appeals committee, the UPI Student Evaluation/Online Committees, the Center for Innovation in Teaching & Research Advisory Board, the Psychology Teaching Evaluation subcommittee, University Graduate Council, Experimental Psychology Master's Steering committee, the College Attraction/Retention of Students committee, and the Midwestern regional Psi Chi Steering Committee.

In the lab we believe science is real, love is love, black lives matter, feminism is for everyone, brains are cool, immigrants are welcome

Research Interests

Some Recent or Current Projects
  • Video Game Imagery - developing standardized stimuli to be used in gaming research
  • Psychological and Neurobiological Individual Differences in Substance Use
  • Substance Use & Mental Health Symptoms in College Students
  • Clinical Treatments / Psychotherapy Outcomes (e.g., mental health & symptom change during psychological treatment)
  • Responses to Trauma/Victimization

Much of his clinical work and research has involved examining the intersection of cognition and emotion (i.e., emotional distractability and attentional mechanisms that may lead to or maintain psychopathology or drug craving). He is particularly interested in studying substance use, including smoking, in relation to psychological disorders (i.e., ADHD) and mental health symptoms (i.e., depression or anxiety).

Recent Scholarly Activities

Recent Scholarly Activities (*indicates current or former student co-athor)

Selected Journal Articles

Stone, B.M.*, Hammersley, J., & Gilbert, D.G. Nicotine Replacement Therapy Fails to Attenuate Attentional Bias to Smoking Cues. (Manuscript under review, Pharmacology, Biochemistry, & Behavior)

Lucke, H.*, Mathes, E., Harbke, C., & Hammersley, J. (2021). Higher Emotion Dysregulation and Coping Motives in Alcohol and Marijuana Users. Substance Use & Misuse, 56:7, 950-961, DOI: 10.1080/10826084.2021.1901927E-print:Preprint link

Tierney, W., Hardy, J. H., III., Ebersole, C., Viganola, D., Clemente, E., Gordon, M., Hoogeveen, S., Haaf, J., Dreber, A.A., Johannesson, M., Pfeiffer, T., Chapman, H., Gantman, A., Vanaman, M., DeMarree, K., Igou, E., Wylie, J., Storbeck J., Andreychik, M.R., McPhetres, J., Vaughn, L.A., Culture and Work Forecasting Collaboration, & Uhlmann, E. L. (2021). A creative destruction approach to replication: Implicit work and sex morality across cultures. Journal of Experimental Social Psychology. [Member of Forecasting Collaboration]. https://www.sciencedirect.com/science/article/pii/S0022103120304005

Keefe, K.M., Hammersley, J. , Sizemore, S.*, Bainter, T.,& Najdek, R.* (2020). Presenting Symptoms and Psychological Treatment Outcomes among First Generation and Non-First Generation College Students. (In press, Journal of College Student Psychotherapy). DOI: https://dx.doi.org/10.1080/87568225.2020.1791775ResearchGate link

Dunkel, C., Hammersley, J., Waters, M.*, Watson, L.*, Walen, A.*, & Van der Linden, D. (2020) The Effect of Early Childhood Intervention on Risk-taking, Mental Health, and Cognitive Ability: The Mediating Role of Life History Strategy. Evolutionary Behavioral Sciences 15, 27-41.

Hammersley, J., Waters, M., & Keefe K.M. Use of Peer Mentoring, Interdisciplinary Collaboration, and Archival Datasets for Engaging Undergraduates in Publishable Research (2019). Frontiers Psychology, 10:96. doi: 10.3389/fpsyg.2019.00096. https://www.frontiersin.org/articles/10.3389/fpsyg.2019.00096/full

Keefe, K., Sizemore, S., Hammersley, J., & Sunami, N. (2018) Recent Sexual Assault and Suicidal Behaviors in College Students: The Moderating Role of Anger. Journal of College Counseling, 21, 98-110. https://onlinelibrary.wiley.com/doi/full/10.1002/jocc.12090

Sunami, N., Hammersley, J. J., & Keefe, K. M. (2017). The role of alcohol problems in the association between intimate partner abuse and suicidality among college students. Psychology of Violence. Advance online publication. http://dx.doi.org/10.1037/vio0000122 PDF

Hammersley, J., Gilbert, D. G., Rzetelny, A., & Rabinovich, N. E. (2016) Moderation of Nicotine Effects on Covert Orienting of Attention Tasks by Poor Placebo Performance and Cue Validity. Pharmacology, Biochemistry & Behavior, 149, 9-16. doi: http://dx.doi.org/10.1016/j.pbb.2016.07.006

Hammersley, J., Rzetelny, A., Gilbert, D. G, Rabinovich, N. E., Huggenvik, J., & Small, S. L. (2013). Effects of Nicotine on Emotional Distraction of Attentional Orienting: Evidence of Possible Moderation by Dopamine Type 2 Receptor Genotype. Pharmacology, Biochemistry & Behavior, 105, 199-204. Doi: http://dx.doi.org/10.1016/j.pbb.2013.02.017

Selected Book Chapters

Hammersley, J., Randazzo, B, & Keefe, K. (2022). Personality Traits Associated With ADHD Symptomatology In College Students. Accepted Book Chapter, in A Guide to Clinical Psychology. Hauppauge, NY: Nova Science Publishers.

Hammersley, J. & Stone, B. (2022). Individual differences affecting smoking cessation: Clinical implications and future directions. Accepted Book Chapter, in A Guide to Clinical Psychology. Hauppauge, NY: Nova Science Publishers.

Hammersley, J. & Keefe, K. (2015). Metacognitive Approaches in Undergraduate Psychology Courses. In C. Sweet, H. Blythe, & R. Carpenter, It Works for me, Metacognitively. Stillwater, Oklahoma: New Forums Press.

Selected Conference Presentations

Keefe, K., Hammersley, J., Sunami, N.*, Pryor, S.*, & Morgan, R. (2021) Suicide Exposure and Suicide Likelihood in Emergency Medical Professionals. Poster presentation at APS 2021 Virtual Convention.

Hammersley, J., Keefe, K., Ballesteros-Font, L.*, & Harbke, C. (2021) Examining Negative Psychotherapy Effects in College Students. Poster presentation at APS 2021 Virtual Convention.

Coulter-Kern, M. & Hammersley, J. (2021) Getting In: Applying to Graduate Programs. Symposium presentation at 2021 Annual Meeting of the Midwestern Psychological Association.

Hammersley, J., Gilbertson, R., Kolaczkowski,, B.*, Leff, D.*, Waters, M., Hartnett, N. & Keefe, KM. (2020, May). Development of a Video Game Image Ratings Database. Virtual poster presentation at the 32nd APS Annual Convention, Chicago, IL.

Dunkel, C., Hammersley, J., Walen, A.*, Waters, M., Watson, L. *, Le, A. *, Kolaczkowski, B. *, & van der Linden, D. (2019, April). Life History Mediates Effects of Childhood Intervention on Clinical Outcomes. Presentation at the Annual Meeting of the Midwestern Psychological Association.

Waters, M., Hammersley, J., Kolaczkowski, B.*, & Huerta, O.* (2019, April). Individual Differences Associated with Resistance to Peer Influence in Drug Use. Presentation at the Annual Meeting of the Midwestern Psychological Association.

Hammersley, J. & Stone, B.* (2019, April). Graduate Faculty Conversations. Invited Roundtable/Seminar Presentation at the Annual Meeting of the Midwestern Psychological Association.

Coeur, V. J., Hammersley, J., Watts, D., Baker, C., & Pettigout, N. (2019, April). The Legalization of Recreational Marijuana: Counseling and Community Perspectives. Panel/symposium presentation, West Central Illinois Professional Counselors' Association, Macomb IL.

Van Fossen, R.*, Kazakova, N.*, & Hammersley, J. (2018, May). Perceived Peer Drug Use Relates to Personal Drug Use Among Stressed College Students. Poster presentation, Annual Convention of the Association for Psychological Science, San Francisco CA.

Hammersley, J., Keefe, K., Jamnik, M.*, Fullerton, E.*, Ritter, K.*, & Waters, M.* (2018, April) Individual Differences Associated with Caffeine Use and Caffeine Motives. Presentation at the Annual Meeting of the Midwestern Psychological Association, Chicago, IL.

Jamnik, M.* & Hammersley, J. (2018). Caffeine Use and Anxiety: The Role of Exercise Frequency. Presentation at the Annual Meeting of the Midwestern Psychological Association, Chicago, IL.

Hammersley, J., Lucke, H.*, Keefe K., Aleshire, B.*, & Harbke, C. (2017, April) Marijuana Use Among College Students with Mood and Anxiety Disorders. Poster presented at the Annual Meeting of the Midwestern Psychological Association, Chicago, IL.

Hammersley, J., Cieck, T.*, Sunami, N.*, Hertel, A., & Van Fossen, R.* (2017, April) Factors Related to Co-Occurring Cigarette Use and Prescription Stimulant Misuse. Poster presented at Annual Meeting of the Midwestern Psychological Association, Chicago IL.

Keefe K., Sizemore, S.*,Hammersley, J., Cieck, T.*, & Morgan, A.* (2017, April) Treatment Seeking and Mental Health in First-Generation College Students.  Poster presented at the Annual Meeting of the Midwestern Psychological Association, Chicago, IL.

Hammersley, J., Sizemore, S.*, Winter, M.* (2016). Subliminal Attentional Processing in an Animate-Inanimate Cued Attention Task. Poster Presented at the Annual Convention of the Association for Psychological Science, Chicago, IL.

Kazakova, N.*, Hammersley, J., Batis, J., & Keefe, K. (2016). Correlates of inhalant use in a sample of college students. Poster Presented at the Annual Convention of the Association for Psychological Science, Chicago, IL.

Van Fossen, R.*, Hammersley, J., Batis, J., Jamnik, M.*, Cirks, M.*, Kazakova, N.*, Aleshire, B. * (2016). Overestimation of Peer Substance Use among College Students: Associations with Negative Academic and Mental Health Outcomes. Poster Presented at the Annual Convention of the Association for Psychological Science, Chicago, IL.

Hammersley J., Aleshire, B.*, & Keefe K. (2016) Drug use and Mental Health related to Emotional Abuse. Poster Presented at the Annual Meeting of the Midwestern Psychological Association, Chicago, IL.

Hammersley J., Winter M.*, & Aleshire, B*. (2016) Attention during Emotional Cueing Associated with Mood and Personality Factors. Poster Presented at the Annual Meeting of the Midwestern Psychological Association, Chicago, IL.

Hammersley J., Kazakova N.*, & Van Fossen R.*, & Keefe, K. (2016) ADHD Treatment and Related Drug Use and Mental Health Outcomes. Poster Presented at the Annual Meeting of the Midwestern Psychological Association, Chicago, IL.

Keefe, K., Sizemore, S.*& Hammersley, J. (2016) Anger and Suicidal Ideation in Behaviors in Assault Survivors. Poster Presented at the Annual Meeting of the Midwestern Psychological Association, Chicago, IL.

Keefe, K., Berg, P.*, & Hammersley, J. (2015) Treatment seeking and reported difficulties associated with AD/HD in college students. Poster presented at the annual meeting of the Association of Behavioral and Cognitive Therapies, Chicago, IL.

Sunami, N.*, Hammersley, J., Keefe, K. (2015) Abusive Intimate Relationships and Suicidality: Alcohol-Related Problems as a Mediator. Poster presented at the annual meeting of the Association of Behavioral and Cognitive Therapies, Chicago, IL.

Smith, A.*, Hammersley, J., Keefe, K. (2015) The Association of Polysubstance Abuse with the Presence of a Psychiatric Problem. Poster presented at the annual meeting of the Association of Behavioral and Cognitive Therapies, Chicago, IL.

Hammersley J., Sunami, N.*, & Gilbert, D. (2015, May) Effects of nicotine on uncued spatial attention differ across baseline performance, repeated exposure, and gender. Paper presented at the 87th annual meeting of the Midwestern Psychological Association, Chicago, IL.

Hammersley, J., Sunami, N.*, Keefe, K., Robinson, L.* (2015, May) Effects of ADHD symptomology and mood state on covert spatial attention performance. Poster presented at the 87th annual meeting of the Midwestern Psychological Association, Chicago, IL.

Keefe, K., Berg, P.*, & Hammersley, J. (2015, May) Pilot Examination of Case-Formulation Quality and Therapist-Perceived Client Outcomes. Poster presented at the 87th annual meeting of the Midwestern Psychological Association, Chicago, IL.