Matthew W Johnson

Summary

Affiliation: Johns Hopkins University
Country: USA

Publications

  1. ncbi request reprint Substitutes for tobacco smoking: a behavioral economic analysis of nicotine gum, denicotinized cigarettes, and nicotine-containing cigarettes
    Matthew W Johnson
    Department of Psychiatry, University of Vermont, 38 Fletcher Place, Burlington, VT 05401 1419, USA
    Drug Alcohol Depend 74:253-64. 2004
  2. pmc Cocaine administration dose-dependently increases sexual desire and decreases condom use likelihood: The role of delay and probability discounting in connecting cocaine with HIV
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD, 21224, USA
    Psychopharmacology (Berl) 234:599-612. 2017
  3. pmc Time course of pharmacokinetic and hormonal effects of inhaled high-dose salvinorin A in humans
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol 30:323-9. 2016
  4. pmc Psilocybin-occasioned mystical experiences in the treatment of tobacco addiction
    Albert Garcia-Romeu
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Curr Drug Abuse Rev 7:157-64. 2014
  5. pmc Cocaine dependent individuals discount future rewards more than future losses for both cocaine and monetary outcomes
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21224 6823, United States Electronic address
    Addict Behav 40:132-6. 2015
  6. pmc Pilot study of the 5-HT2AR agonist psilocybin in the treatment of tobacco addiction
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol 28:983-92. 2014
  7. pmc Test-retest reliability and gender differences in the sexual discounting task among cocaine-dependent individuals
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
    Exp Clin Psychopharmacol 21:277-86. 2013
  8. pmc Comparative abuse liability of GHB and ethanol in humans
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Exp Clin Psychopharmacol 21:112-23. 2013
  9. pmc An efficient operant choice procedure for assessing delay discounting in humans: initial validation in cocaine-dependent and control individuals
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Exp Clin Psychopharmacol 20:191-204. 2012
  10. pmc Psilocybin dose-dependently causes delayed, transient headaches in healthy volunteers
    Matthew W Johnson
    Johns Hopkins University School of Medicine, Department of Psychiatry and Behavioral Sciences, Behavioral Biology Research Center, Baltimore, MD 21224 6823, USA
    Drug Alcohol Depend 123:132-40. 2012

Collaborators

Detail Information

Publications51

  1. ncbi request reprint Substitutes for tobacco smoking: a behavioral economic analysis of nicotine gum, denicotinized cigarettes, and nicotine-containing cigarettes
    Matthew W Johnson
    Department of Psychiatry, University of Vermont, 38 Fletcher Place, Burlington, VT 05401 1419, USA
    Drug Alcohol Depend 74:253-64. 2004
    ..Furthermore, these findings indicate that alternative reinforcement would be most effective in smoking cessation treatment when combined with high prices for cigarettes...
  2. pmc Cocaine administration dose-dependently increases sexual desire and decreases condom use likelihood: The role of delay and probability discounting in connecting cocaine with HIV
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD, 21224, USA
    Psychopharmacology (Berl) 234:599-612. 2017
    ..This study examined the effect of cocaine administration on sexual desire, hypothetical condom use, and discounting tasks...
  3. pmc Time course of pharmacokinetic and hormonal effects of inhaled high-dose salvinorin A in humans
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol 30:323-9. 2016
    ..This is the first study to demonstrate a direct relationship between changes in plasma levels of salvinorin A and drug effects in humans. The results confirm the efficacy of an inhalation technique for salvinorin A. ..
  4. pmc Psilocybin-occasioned mystical experiences in the treatment of tobacco addiction
    Albert Garcia-Romeu
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Curr Drug Abuse Rev 7:157-64. 2014
    ..These results suggest a mediating role of mystical experience in psychedelic-facilitated addiction treatment. ..
  5. pmc Cocaine dependent individuals discount future rewards more than future losses for both cocaine and monetary outcomes
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21224 6823, United States Electronic address
    Addict Behav 40:132-6. 2015
    ..Because the sign effect was shown for both cocaine and money, delayed aversive outcomes may generally have greater impact than delayed rewards in shaping present behavior in this population. ..
  6. pmc Pilot study of the 5-HT2AR agonist psilocybin in the treatment of tobacco addiction
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol 28:983-92. 2014
    ..The present study illustrates a framework for future research on the efficacy and mechanisms of hallucinogen-facilitated treatment of addiction. ..
  7. pmc Test-retest reliability and gender differences in the sexual discounting task among cocaine-dependent individuals
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
    Exp Clin Psychopharmacol 21:277-86. 2013
    ....
  8. pmc Comparative abuse liability of GHB and ethanol in humans
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Exp Clin Psychopharmacol 21:112-23. 2013
    ..g., headache)...
  9. pmc An efficient operant choice procedure for assessing delay discounting in humans: initial validation in cocaine-dependent and control individuals
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Exp Clin Psychopharmacol 20:191-204. 2012
    ..The QDOT is an efficient operant human delay-discounting task that may be useful in a variety of experimental settings...
  10. pmc Psilocybin dose-dependently causes delayed, transient headaches in healthy volunteers
    Matthew W Johnson
    Johns Hopkins University School of Medicine, Department of Psychiatry and Behavioral Sciences, Behavioral Biology Research Center, Baltimore, MD 21224 6823, USA
    Drug Alcohol Depend 123:132-40. 2012
    ..Although psilocybin is structurally related to migraine medications, and case studies suggest that psilocybin may be efficacious in treatment of cluster headache, little is known about the relationship between psilocybin and headache...
  11. pmc The Sexual Discounting Task: HIV risk behavior and the discounting of delayed sexual rewards in cocaine dependence
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21224 6823, USA
    Drug Alcohol Depend 123:15-21. 2012
    ..Cocaine dependence is associated with high rates of sexual risk behavior and HIV infection. However, little is known about the responsible mechanism(s)...
  12. pmc Replacing relative reinforcing efficacy with behavioral economic demand curves
    Matthew W Johnson
    University of Vermont, USA
    J Exp Anal Behav 85:73-93. 2006
    ..The demand curve analysis illustrates why concordance between traditional measures is expected under some experimental conditions but not others...
  13. pmc Human psychopharmacology and dose-effects of salvinorin A, a kappa opioid agonist hallucinogen present in the plant Salvia divinorum
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21224 6823, USA
    Drug Alcohol Depend 115:150-5. 2011
    ..Under these prepared and supportive conditions, salvinorin A occasioned a unique profile of subjective effects having similarities to classic hallucinogens, including mystical-type effects...
  14. pmc Effects of oral caffeine pretreatment on response to intravenous nicotine and cocaine
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21224 6823, USA
    Exp Clin Psychopharmacol 18:305-15. 2010
    ..In contrast to the previous research using chronic caffeine maintenance, these data suggest that infrequent acute caffeine administration may attenuate nicotine effects...
  15. pmc Delay discounting in current and former marijuana-dependent individuals
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Exp Clin Psychopharmacol 18:99-107. 2010
    ..Results suggest that current marijuana dependence may be associated with a trend toward increased delay discounting, but this effect size appears to be smaller for marijuana than for previously examined drugs...
  16. pmc An algorithm for identifying nonsystematic delay-discounting data
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, John Hopkins University School of Medicine, Baltimore, MD 21224 6823, USA
    Exp Clin Psychopharmacol 16:264-74. 2008
    ..The algorithm may be used in empirical investigations to improve discounting methodology, and may be used to identify outliers to be removed from analyses...
  17. ncbi request reprint Moderate drug use and delay discounting: a comparison of heavy, light, and never smokers
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, Johns Hopkins University School of Medicine, Baltimore, MD 21224 6823, USA
    Exp Clin Psychopharmacol 15:187-94. 2007
    ..These data suggest that even moderate levels of drug use may be associated with high delay discounting levels...
  18. pmc High doses of dextromethorphan, an NMDA antagonist, produce effects similar to classic hallucinogens
    CHAD J REISSIG
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Psychopharmacology (Berl) 223:1-15. 2012
    ..Although reports of dextromethorphan (DXM) abuse have increased recently, few studies have examined the effects of high doses of DXM...
  19. pmc Mystical experiences occasioned by the hallucinogen psilocybin lead to increases in the personality domain of openness
    Katherine A MacLean
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol 25:1453-61. 2011
    ..The findings suggest a specific role for psilocybin and mystical-type experiences in adult personality change...
  20. pmc Psilocybin produces substantial and sustained decreases in depression and anxiety in patients with life-threatening cancer: A randomized double-blind trial
    Roland R Griffiths
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol 30:1181-1197. 2016
    ..Community observer ratings showed corresponding changes. Mystical-type psilocybin experience on session day mediated the effect of psilocybin dose on therapeutic outcomes...
  21. ncbi request reprint Ramelteon: a novel hypnotic lacking abuse liability and sedative adverse effects
    Matthew W Johnson
    Department of Psychiatry and Behavioral Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
    Arch Gen Psychiatry 63:1149-57. 2006
    ..Ramelteon is a novel MT1 and MT2 melatonin receptor selective agonist recently approved for insomnia treatment. Most approved insomnia medications have potential for abuse and cause motor and cognitive impairment...
  22. pmc Dose-related effects of salvinorin A in humans: dissociative, hallucinogenic, and memory effects
    Katherine A MacLean
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Psychopharmacology (Berl) 226:381-92. 2013
    ..Salvinorin A is a kappa opioid agonist and the principal psychoactive constituent of the plant Salvia divinorum, which has increased in popularity as a recreational drug over the past decade. Few human studies have examined salvinorin A...
  23. pmc Initial feasibility and validity of a prospective memory training program in a substance use treatment population
    Mary M Sweeney
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine
    Exp Clin Psychopharmacol 24:390-399. 2016
    ..These data support the development of this intervention as an adjunctive therapy for substance use disorders. (PsycINFO Database Record..
  24. ncbi request reprint Survey study of challenging experiences after ingesting psilocybin mushrooms: Acute and enduring positive and negative consequences
    Theresa M Carbonaro
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol 30:1268-1278. 2016
    ..The incidence of risky behavior or enduring psychological distress is extremely low when psilocybin is given in laboratory studies to screened, prepared, and supported participants...
  25. ncbi request reprint Decision-making in state lotteries: half now or all of it later?
    Forest Baker
    University of Vermont, Burlington, Vermont, USA
    Psychon Bull Rev 10:965-70. 2003
    ..These findings suggest that real-world choices involving large sums of money may be subject to diminishing marginal utility and probability and delay discounting...
  26. pmc Validation of the revised Mystical Experience Questionnaire in experimental sessions with psilocybin
    Frederick S Barrett
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol 29:1182-90. 2015
    ..A method to score a "complete mystical experience" that was used in previous versions of the mystical experience questionnaire is validated in the MEQ30, and a stand-alone version of the MEQ30 is provided for use in future research. ..
  27. doi request reprint An online survey of tobacco smoking cessation associated with naturalistic psychedelic use
    Matthew W Johnson
    1 Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol . 2017
    ..Results suggest psychedelics may hold promise in treating tobacco addiction as potentially mediated by spiritual experience, changed priorities/values, and improved emotional regulation...
  28. ncbi request reprint The Challenging Experience Questionnaire: Characterization of challenging experiences with psilocybin mushrooms
    Frederick S Barrett
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    J Psychopharmacol 30:1279-1295. 2016
    ..The Challenging Experience Questionnaire provides a basis for future investigation of predictors and outcomes of challenging experiences with classic hallucinogens...
  29. pmc Delay and probability discounting of sexual and monetary outcomes in individuals with cocaine use disorders and matched controls
    Matthew W Johnson
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
    PLoS ONE 10:e0128641. 2015
    ..g., delay and probability discounting) with respect to specific outcomes (e.g., monetary and sexual) to understand decision making in problematic behavior. ..
  30. pmc Weekly Energy Drink Use Is Positively Associated with Delay Discounting and Risk Behavior in a Nationwide Sample of Young Adults
    Steven E Meredith
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland Calhoun Cardiology Center, University of Connecticut School of Medicine, Farmington, Connecticut
    J Caffeine Res 6:10-19. 2016
    ..b>Conclusions: This study extends findings that energy drink use is associated with risk behavior, and it is the first study to show that energy drink use is associated with monetary delay discounting...
  31. pmc Examining delay discounting of condom-protected sex among opioid-dependent women and non-drug-using control women
    Evan S Herrmann
    Department of Psychology, University of Vermont, Room 1415 UHC, 1 S Prospect Street, Burlington, VT 05401, United States Electronic address
    Drug Alcohol Depend 144:53-60. 2014
    ..This behavior generally persists after completion of interventions that increase sexual HIV risk reduction knowledge and skills, suggesting that decision-making biases may influence HIV transmission among OD women...
  32. pmc Alcohol Increases Delay and Probability Discounting of Condom-Protected Sex: A Novel Vector for Alcohol-Related HIV Transmission
    Patrick S Johnson
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
    Alcohol Clin Exp Res 40:1339-50. 2016
    ..Probability discounting is studied with a similar framework as delay discounting, but is a distinct process in which a consequence is devalued because it is uncertain or probabilistic...
  33. pmc A randomized controlled trial of the effects of working memory training in methadone maintenance patients
    Olga Rass
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224, USA
    Drug Alcohol Depend 156:38-46. 2015
    ..Cognitive training targeting working memory shows promise for improved function in substance use disorders. To date, cognitive training has not been incorporated as an adjunctive treatment for opioid dependence...
  34. pmc Effects of varenicline on abstinence and smoking reward following a programmed lapse
    Erin A McClure
    Behavioral Pharmacology Research Unit, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
    Nicotine Tob Res 15:139-48. 2013
    ..The present study extends this line of research by conducting a prospective laboratory study to examine the relapse prevention effects of varenicline following a programmed lapse...
  35. pmc Psilocybin occasioned mystical-type experiences: immediate and persisting dose-related effects
    Roland R Griffiths
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224 6823, USA
    Psychopharmacology (Berl) 218:649-65. 2011
    ..This dose-effect study extends previous observations showing that psilocybin can occasion mystical-type experiences having persisting positive effects on attitudes, mood, and behavior...
  36. ncbi request reprint Relative abuse liability of hypnotic drugs: a conceptual framework and algorithm for differentiating among compounds
    Roland R Griffiths
    Department of Psychiatry, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA
    J Clin Psychiatry 66:31-41. 2005
    ....
  37. ncbi request reprint Delay discounting in currently using and currently abstinent cocaine-dependent outpatients and non-drug-using matched controls
    Sarah H Heil
    Department of Psychiatry, University of Vermont, USA
    Addict Behav 31:1290-4. 2006
    ..These data replicate previous work in cocaine-dependent and other substance abusers compared to non-drug-using controls and suggest that a longer period of abstinence may be required to modify discounting in this population...
  38. pmc Temporal preference in individuals reporting chronic pain: discounting of delayed pain-related and monetary outcomes
    D Andrew Tompkins
    aDepartment of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA bDepartment of Psychology, California State University Chico, Chico, CA, USA cDepartment of Anesthesiology, Perioperative, and Pain Medicine, Harvard Medical School, Brigham and Women s Hospital, Boston, MA, USA
    Pain 157:1724-32. 2016
    ..Measures of DD may have promise in more accurately identifying individuals at highest risk for opioid misuse during chronic opioid therapy. ..
  39. pmc Knowledge about nicotine among HIV-positive smokers: Implications for tobacco regulatory science policy
    Lauren R Pacek
    Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, 2608 Erwin Road, Suite 300, Durham, NC 27705, USA Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224, USA Electronic address
    Addict Behav 65:81-86. 2017
    ..Additionally, incorrect knowledge about nicotine has implications for the uptake and continued use of nicotine replacement therapy...
  40. ncbi request reprint Discounting of Condom-Protected Sex as a Measure of High Risk for Sexually Transmitted Infection Among College Students
    Anahi Collado
    Alvord, Baker, and Associates, LLC, 3200 Tower Oaks Blvd, Suite 200, Rockville, MD, 20852, USA
    Arch Sex Behav . 2016
    ..These results provide support for considering sexual delay discounting, with particular emphasis on potential delays to condom use, as a risk factor for STI among college students...
  41. pmc Behavioral risk assessment for infectious diseases (BRAID): Self-report instrument to assess injection and noninjection risk behaviors in substance users
    Kelly E Dunn
    Behavioral Pharmacology Research Unit, Johns Hopkins University School of Medicine Department of Psychiatry and Behavioral Sciences, 5510 Nathan Shock Drive, Baltimore, MD, 21224, United States Electronic address
    Drug Alcohol Depend 168:69-75. 2016
    ..This study developed and provided initial, internal validation of the Behavioral Risk Assessment for Infectious Diseases (BRAID) to assess infectious disease risk behaviors among alcohol and other drug users...
  42. doi request reprint Long-term follow-up of psilocybin-facilitated smoking cessation
    Matthew W Johnson
    a Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
    Am J Drug Alcohol Abuse 43:55-60. 2017
    ....
  43. pmc Characterizing use patterns and perceptions of relative harm in dual users of electronic and tobacco cigarettes
    Olga Rass
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine
    Exp Clin Psychopharmacol 23:494-503. 2015
    ..Policies should consider potential public health benefits of e-cigarettes, in addition to potential harms...
  44. pmc Nicotine reinforcement in never-smokers
    Angela N Duke
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD, 21224 6823, USA
    Psychopharmacology (Berl) 232:4243-52. 2015
    ..However, nicotine is a relatively weak and inconsistent reinforcer in nonhumans and nicotine reinforcement has not been demonstrated in never-smokers...
  45. pmc Examining Delay Discounting of Condom-Protected Sex Among Men Who Have Sex with Men Using Crowdsourcing Technology
    Evan S Herrmann
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD, 21224, USA
    AIDS Behav 19:1655-65. 2015
    ..Delay discounting is likely a critical, but underappreciated facet of HIV risk among MSM. ..
  46. pmc Topiramate impairs cognitive function in methadone-maintained individuals with concurrent cocaine dependence
    Olga Rass
    Behavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine
    Psychol Addict Behav 29:237-46. 2015
    ..This effect may limit its acceptability and use as a treatment in individuals with chronic opioid and cocaine use disorders, among whom preexisting cognitive impairments are common. (PsycINFO Database Record ..
  47. ncbi request reprint Relationship between cooperation in an iterated prisoner's dilemma game and the discounting of hypothetical outcomes
    Richard Yi
    University of Vermont, Burlington, Vermont, USA
    Learn Behav 33:324-36. 2005
    ..Correlations between rate of probability-discounting and cooperation rate in a repeated prisoner's dilemma game versus neither a tit-for-tat nor a random strategy were significant...
  48. ncbi request reprint Delay discounting in current and never-before cigarette smokers: similarities and differences across commodity, sign, and magnitude
    Forest Baker
    Department of Psychiatry, University of Vermont, USA
    J Abnorm Psychol 112:382-92. 2003
    ..Current smokers' delay discount rates for monetary outcomes, however, were higher than never-before smokers across all magnitudes and both signs. This trend was also found for delayed health outcomes, but failed to reach significance...
  49. doi request reprint Assessing the Validity of Online Drug Forums as a Source for Estimating Demographic and Temporal Trends in Drug Use
    Michael J Paul
    Department of Information Science MJP, University of Colorado, Boulder, CO Department of Psychiatry and Behavioral Sciences MSC, MWJ, RGV and Department of Computer Science MD, Johns Hopkins University, Baltimore, MD
    J Addict Med 10:324-30. 2016
    ..This study aimed to characterize and compare the demographic and temporal trends associated with drug use as reported in online forums and in a large epidemiological survey...
  50. pmc Investigation of "bath salts" use patterns within an online sample of users in the United States
    Patrick S Johnson
    A postdoctoral fellow, Johns Hopkins University School of Medicine, Baltimore, MD
    J Psychoactive Drugs 46:369-78. 2014
    ..Data revealed more normative outcomes vis-à-vis extreme accounts by media and medical case reports. However, indications of product abuse potential and sexual risk remain, suggesting bath salts pose potential public health harm...
  51. pmc Demand curves for hypothetical cocaine in cocaine-dependent individuals
    Natalie R Bruner
    Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD, 21224, USA
    Psychopharmacology (Berl) 231:889-97. 2014
    ..However, a purchasing task for cocaine in cocaine-dependent individuals has not been investigated...