Nikola Zaharakis

ORCID: 0000-0003-0855-9610
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About
Contact & Profiles
Research Areas
  • Child and Adolescent Psychosocial and Emotional Development
  • Digital Mental Health Interventions
  • Substance Abuse Treatment and Outcomes
  • Homelessness and Social Issues
  • Mental Health Research Topics
  • Cannabis and Cannabinoid Research
  • Impact of Technology on Adolescents
  • Community Health and Development
  • Smoking Behavior and Cessation
  • Bipolar Disorder and Treatment
  • Behavioral Health and Interventions
  • Urban, Neighborhood, and Segregation Studies
  • Intimate Partner and Family Violence
  • Mobile Health and mHealth Applications
  • Psychosomatic Disorders and Their Treatments
  • Religion, Spirituality, and Psychology
  • Child Abuse and Trauma
  • Parental Involvement in Education
  • Health disparities and outcomes
  • Gambling Behavior and Treatments
  • Innovative Human-Technology Interaction
  • Place Attachment and Urban Studies
  • Mental Health Treatment and Access
  • COVID-19 and Mental Health
  • Bullying, Victimization, and Aggression

University of Tennessee at Knoxville
2017-2025

Centers for Behavioral Health
2025

Knoxville College
2022

Arizona State University
2018-2021

Research for Equity And Community Health Trust
2018

Realistic Education in Action Coalition to Foster Health
2018

Virginia Commonwealth University
2010-2016

Virginia Commonwealth University Medical Center
2016

Commonwealth Education Trust
2014

Using cannabis to reduce psychological and physical distress, referred as self-medication, is a significant risk factor for use disorder. To better understand this high-risk behavior, sample of 290 young adults (ages 18-25; 45.6% female) were recruited from two U.S. universities in January February 2020 complete survey about their self-medication. Results: seventy-six percent endorsed using problems such anxiety, sleep, depression, pain, loneliness, social discomfort, concentration. When...

10.3390/ijerph19031850 article EN International Journal of Environmental Research and Public Health 2022-02-07

The relationship between social network risk (alcohol-using close friends), perceived peer closeness, substance use, and psychiatric symptoms was examined to identify protective features of college students' context.Six hundred seventy undergraduate students enrolled in a large southeastern university.An online survey administered consenting students.Students with risky networks were at 10-fold increase hazardous drinking, 6-fold for weekly marijuana 3-fold tobacco use. College who feel very...

10.1080/07448481.2014.923428 article EN Journal of American College Health 2014-05-21

The goal of this cross‐sectional study was to assess the relationship alcohol craving with biopsychosocial and addiction factors that are clinically pertinent alcoholism treatment. Alcohol assessed in 315 treatment‐seeking, dependent subjects using Penn Craving Scale questionnaire. Standard validated questionnaires were used evaluate a variety biological, addiction, psychological, psychiatric, social factors. Individual covariates included age, race, problematic consequences drinking, heavy...

10.1111/j.1521-0391.2010.00067.x article EN American Journal on Addictions 2010-07-26

Few studies have examined in detail how specific behaviors of close friends put adolescents at risk for types substance use. Using a prospective, longitudinal design, we well the use 248 young urban was predicted by perceptions their 3 closest friends' problematic behaviors: (1) using substances, (2) offering and (3) engaging with risky behavior (substance use, illegal behavior, violent or high-risk sexual behavior). Longitudinal multivariate repeated measures models were tested to predict...

10.1037/adb0000299 article EN other-oa Psychology of Addictive Behaviors 2017-07-13

The Stages of Change (SoC) model explains addictive behavior change through 5 stages: precontemplation, contemplation, preparation, action, and maintenance. Limited evidence exists from randomized controlled trials testing the SoC in Cannabis Use Disorder (CUD) treatments. aim this study was to test indirect effects Peer Network Counseling- text (PNC-txt), a text-message delivered motivational interviewing informed treatment for cannabis use disorder, advancing participants SoC. Design...

10.1080/10826084.2025.2505767 article EN Substance Use & Misuse 2025-05-18

A small body of evidence supports targeting adolescents who are heavy users cannabis with brief interventions, yet more research is needed to confirm the effectiveness these studies. We conducted a secondary analysis our Peer Network Counseling (PNC) study (Mason et al., 2015), focusing on 46 sample 119 reported use at baseline.Urban (91% African American) presenting for primary health care were randomized intervention or control conditions and followed 6 months. selected cases (n = 46)...

10.15288/jsad.2017.78.152 article EN Journal of Studies on Alcohol and Drugs 2016-12-12

Neighborhood features such as the density of tobacco outlets relative to one's home and evaluations safety activity space (routine locations), are known influence health behaviors. Understanding time-varying nature these aspects urban ecology provides unique insights into dynamic interactions individuals their environments.

10.1093/ntr/ntv254 article EN Nicotine & Tobacco Research 2015-11-07

Young adults ages 18 to 25 have the highest percentage (5%) of cannabis use disorder (CUD) among all age groups, and are least likely receive treatment compared with other groups. Because this population is in need creative approaches for engagement, we tested Peer Network Counseling-txt (PNC-txt), a 4-week, automated text-delivered that focuses on close peer relations 96 seeking young adults. Participants meeting CUD criteria were randomized PNC-txt, or assessment only control condition...

10.1037/adb0000403 article EN Psychology of Addictive Behaviors 2018-09-27

The nonmedical use of prescription medication among US adults is a growing public health problem. Healthcare providers should proactively address this problem in outpatient encounters.We sought to understand the interactive effects drugs, pain, and psychiatric symptoms adult outpatients build an empirical foundation for comprehensive screening.We screened 625 neurosurgery orthopedic patients at suburban satellite clinic urban academic medical center. A convenience sample was substance...

10.1097/adm.0000000000000253 article EN Journal of Addiction Medicine 2016-08-24
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