All Publications
All Publications (updated September 14 2025)
Talbot LS, Maguen S, Metzler TJ, Schmitz M, McCaslin SE, Richards A, Perlis ML, Posner DA, Weiss B, Ruoff L, Varbel J, Neylan TC. Cognitive behavioral therapy for insomnia in posttraumatic stress disorder: a randomized controlled trial. Sleep. 2004;37(2):327–341
Miller JD, Crowe M, Weiss B, Maples-Keller JL, Lynam DR. Using online crowdsourcing platforms for data collection in personality disorder research: The example of Amazon’s Mechanical Turk. Personality Disorders: Theory, Research, and Treatment. 2017;8(1):26–34
Weiss B, Lynam DR, Miller JD. Psychopathy and ratings of persuasiveness: Examining their relations in weaker and stronger contexts. Clinical Psychological Science. 2017;6(6):882–890
Weiss B, Lavner JA, Miller JD. Self- and partner-reported psychopathic traits’ relations with couples’ communication, marital satisfaction trajectories, and divorce in a longitudinal sample. Personality Disorders: Theory, Research, and Treatment. 2018;9(3):239–249
Lavner JA, Weiss B, Miller JD, Karney BR. Personality change among newlyweds: Patterns, predictors, and associations with marital satisfaction over time. Developmental Psychology. 2018;54(6):1172–1185
Hyatt CS, Weiss B, Carter NT, Zeichner A, Miller JD. The relation between narcissism and laboratory aggression is not contingent on environmental cues of competition. Personality Disorders: Theory, Research, and Treatment. 2018;9(6):543–552
Weiss B, Crowe M, Harris A, Carter NT, Lynam DR, Watts AL, Lilienfeld SO, Skeem JL, Miller JD. Examining hypothesized curvilinear and interactive relations between psychopathic traits and externalizing problems in an offender sample using item response-based analysis. Journal of Psychopathology and Clinical Science. 2019;128(7):689–699
Sleep CE, Weiss B, Lynam DR, Miller JD. An examination of the Triarchic Model of Psychopathy’s nomological network: A meta-analytic review. Clinical Psychology Review. 2019;71:1–26
Kaufman SB, Weiss B, Miller JD, Campbell WK. Clinical correlates of vulnerable and grandiose narcissism: A personality perspective. Journal of Personality Disorders. 2020;34(1):107–130. (shared first author)
Sleep CE, Weiss B, Lynam DR, Miller JD. The DSM-5 Section III Personality Disorder Criterion A in relation to both pathological and general personality traits. Personality Disorders: Theory, Research, and Treatment. 2020;11(3):202–212
Hyatt CS, Hallowell ES, Owens MM, Weiss B, Sweet LH, Miller JD. An fMRI investigation of the relations between extraversion, internalizing psychopathology, and reward processing in the Human Connectome Project sample. Journal of Personality Neuroscience. 2020;3:1–15
Jayawickreme E, Tsukayama E, Blackie L, Weiss B. Examining within-person relationships between state assessments of affect and eudaimonic well-being using multilevel structural equation modeling. The Journal of Positive Psychology. 2020;16(5):691–700
Crowe M, Weiss B, Sleep CE, Harris AM, Carter NT, Lynam DR, Miller JD. Fearless Dominance/Boldness is not strongly related to externalizing behaviors: An item response-based analysis. Assessment. 2020;28(2):1–16
Azad H, Weiss B, Mirani A, Rezaei F, Miller JD. Examining the contribution of perfectionistic traits to the construct validity of the DSM-5 Alternative Model of Personality Disorder. Journal of Personality Disorders. 2020;34:1–18 (shared first author)
Weiss B, Nygart V, Pommerencke LM, Carhart-Harris RL, Erritzoe D. Examining psychedelic-induced changes in social functioning and connectedness in a naturalistic online sample using the Five-Factor Model of personality. Frontiers in Psychology. 2021;12:1–20
Weiss B, Miller JD, Carter NT, Campbell WK. Examining changes in personality following shamanic ceremonial use of ayahuasca. Scientific Reports. 2021;11:1–15
Packer West M, Miller JD, Weiss B, Spencer CC, Crowe ML, Campbell WK, Lynam DR. Development and validation of the super-short form of the Five-Factor Narcissism Inventory (FFNI-SSF). Personality and Individual Differences. 2021;177:1–5
Weiss B, Jahn A, Hyatt CS, Owens M, Carter NT, Sweet LH, Miller JD, Haas BW. Investigating the neural substrates of antagonistic externalizing and social-cognitive theory of mind: An fMRI examination of functional activity and synchrony. Journal of Personality Neuroscience. 2021;4:1–10
Weiss B, Sleep CE, Lynam DR, Miller JD. Evaluating the instantiation of narcissism components in contemporary measures of psychopathy. Assessment. 2021;28(1):15–28
Agin-Liebes G, Zeifman R, Luoma J, Garland EL, Campbell WK, Weiss B. Prospective examination of the therapeutic role of psychological flexibility and cognitive reappraisal in the ceremonial use of ayahuasca. Journal of Psychopharmacology. 2022;36(3):295–308
Weiss B, Sleep CE, Miller JD, Campbell WK. Examining the therapeutic effect of ceremonial ayahuasca on narcissistic personality and antagonistic externalizing in adults. Journal of Personality Disorders. 2023;37(2):131–155
Weiss B, Erritzoe D, Giribaldi B, Nutt DJ, Carhart-Harris RL. A critical evaluation of QIDS-SR-16 using data from a trial of psilocybin therapy vs. escitalopram treatment for depression. Journal of Psychopharmacology. 2023;1–16
Weiss B, Ginige I, Shannon L, Giribaldi B, Murphy-Beiner A, Murphy R, Baker-Jones M, Martell J, Nutt DJ, Carhart-Harris RL, Erritzoe D. Personality change in a trial of psilocybin therapy vs. escitalopram treatment for depression. Psychological Medicine. 2023;1–5
Weiss B, Wingert A, Erritzoe D, Campbell WK. Prevalence and therapeutic impact of adverse life event reexperiencing under ceremonial ayahuasca. Scientific Reports. 2023;13(1):1–17
Ruffell SGD, Grosland-Wood M, Palmer R, Netzband N, Tsang W, Weiss B, Gandy S, Cowley-Court T, Halman A, McHerron D, Jong A, Kennedy T, White E, Perkins D, Terhune D, Sarris J. Ayahuasca: A review of historical, pharmacological, and therapeutic aspects. Psychiatry and Clinical Neurosciences Reports. 2023;2(4):1–20
Weiss B, Dinh-Williams LL, Beller N, Raugh IM, Strauss GP, Campbell WK. Ayahuasca in the treatment of post-traumatic stress disorder: Mixed methods case series evaluation in military combat veterans. Psychological Trauma: Theory, Research, Practice, and Policy. 2023;1–4
Weiss B, Sleep CE, Beller NM, Erritzoe D, Campbell WK. Perceptions of psychedelic personality change, determinants of use, setting and drug moderation: Toward a holistic model. Journal of Psychedelic Studies. 2023;7(3):200–226
James EH, Erritzoe D, Benway T, Joel Z, Timmerman C, Good M, Agnorelli C, Weiss B, Barba T, Campbell G, Baker-Jones M. Safety, tolerability, pharmacodynamic and wellbeing effects of SPL026 (dimethyltryptamine fumarate) in healthy participants: A randomized, placebo-controlled Phase 1 trial. Frontiers in Psychiatry. 2024;1–14 (Role: data analysis, manuscript writing)
Szigeti B, Weiss B, Rosas FE, Erritzoe D, Nutt D, Carhart-Harris R. Assessing expectancy and suggestibility in a trial of escitalopram vs. psilocybin for depression. Psychological Medicine. 2024;1–8
Weiss B, Roseman L, Giribaldi B, Nutt D, Carhart-Harris RL, Erritzoe D. Unique psychological mechanisms underlying psilocybin therapy versus escitalopram treatment in major depressive disorder. International Journal of Mental Health and Addiction. 2024;22:806–841
Marrocu A, Kettner H, Weiss B, Zeifman RJ, Erritzoe D, Carhart-Harris RL. Psychiatric risks for worsened mental health after psychedelic use. Journal of Psychopharmacology. 2024;38(3):225–235
Erritzoe D, Barba T, Greenway KT, Murphy R, Martell J, Giribaldi B, Timmermann C, Murphy-Beiner A, Jones MB, Nutt DJ, Weiss B, Carhart-Harris RL. Effect of psilocybin versus escitalopram on depression symptom severity: Observational 6-month follow-up of a phase 2 randomized controlled trial. eClinicalMedicine. 2024;76:1–16 (shared last author)
Yaden DB, Goldy SP, Weiss B, Griffiths RR. Clinically relevant acute subjective effects of psychedelics beyond mystical experience. Nature Reviews Psychology. 2024;3:606–621
Reid M, Kettner H, Weiss B, Carhart-Harris RL. Preliminary evidence of sleep improvements following psilocybin administration and their involvement in antidepressant therapeutic action. Current Psychiatry Reports. 2024;26:659–669
Godfrey K, Weiss B, Zhang X, Spriggs M, Peill J, Lyons T, Carhart-Harris R, Erritzoe D. An investigation of acute physiological and psychological moderators of psychedelic-induced personality change among healthy volunteers. Neuroscience Applied. 2025;4:1–10 (shared first author)
Soulliere B, Chopik WJ, Carrillo A, Campbell WK, Weiss B, Miller JD. Ink and identity: Personality perceptions based on tattoos. Journal of Research in Personality. 2025;117:104629 (shared last author)
Review Articles
Weiss B, Sleep CE, Miller JD. Levenson Self-report Psychopathy Scale. Encyclopedia of Personality and Individual Differences. 2020;2606–2610
Carhart-Harris RL, Chandaria S, Erritzoe D, Gazzaley A, Girn M, Kettner H, Mediano P, Nutt DJ, Rosas FE, Roseman L, Timmerman C, Weiss B, Zeifman RJ, Friston KJ. Canalization and plasticity in psychopathology. Neuropharmacology. 2022;226:1–14
Solaja I, Haldane K, Mason N, Weiss B, Xu X, Xu M, Nikolin S, Jayasena T, Millard M, Brett J, Bayes A, Loo C, Martin D. Who are you after psychedelics? A systematic review and meta-analysis of long-term effects of serotonergic psychedelics. Neuroscience & Biobehavioral Reviews. 2024;158:1–14
Carrithers BM, Roberts DE, Weiss B, King JD, Carhart-Harris RL, Gordon AR, Pagni BA, Moreau M, Ross S, Zeifman RJ. Exploring serotonergic psychedelics as a treatment for personality disorders. Neuropharmacology. 2025; in press
Yaden DB, Graziosi M, Owen AM, Agin-Liebes G, Aaronson ST, Allen KE, Barrett FS, Bogenschutz MP, Carhart-Harris R, Ching TH, Cosimano MP, Weiss B, Wolff M, Yaden ME. A field-wide review and analysis of study materials used in psilocybin trials. Psychedelic Medicine. 2025;3–18
Gordon AR, Carrithers BM, Pagni BA, Kettner H, Marrocu A, Nayak S, Weiss B, Carhart-Harris RL, Roberts DE, Erritzoe D, Zeifman RJ. The effect of psychedelics on individuals with a personality disorder: Results from two prospective cohort studies. Psychedelic Medicine. in press
Book Chapters
Hyatt CS, Sleep CE, Weiss B, Miller JD. Personality and aggression: A general trait perspective. In A. Vazsonyi, D. Flannery, & M. DeLisi (Eds.), The Cambridge Handbook of Violent Behavior and Aggression. 2018. Cambridge University Press.
Weiss B, Miller JD. Distinguishing between grandiose narcissism, vulnerable narcissism, and narcissistic personality disorder. In J. D. Foster, A. Brunell, & T. Hermann (Eds.), The Handbook of Trait Narcissism: Key Advances, Research Methods, and Controversies. 2018. Springer.
Weiss B, Campbell WK, Lynam DL, Miller JD. A trifurcated model of narcissism: On the pivotal role of trait antagonism. In J. D. Miller & D. R. Lynam (Eds.), The Handbook of Antagonism: Conceptualizations, Assessment, Consequences, and Treatment of the Low End of Agreeableness. 2019. Elsevier.
Weiss B, Campbell WK. A call for scientific caution: Commentary on narcissistic and histrionic personality disorders. In K. Gratz & C. W. Lejuez (Eds.), Handbook of Personality Disorders. 2020. Cambridge University Press.
Weiss B, Lynam DR, Miller JD. The Elemental Psychopathy Assessment. In M. DeLisi (Ed.), Routledge International Handbook of Psychopathy and Crime. 2019. Routledge.
Crowe M, Weiss B, Lynam DL, Campbell WK, Miller JD. Narcissism and narcissistic personality disorder: Moving toward a trifurcated model. In T. A. Widiger (Ed.), The Oxford Handbook of Personality Disorders. 2022. Oxford University Press.
Nutt DJ, Peill JM, Weiss B, Godfrey K, Carhart-Harris RL, Erritzoe D. Psilocybin and other psychedelics in depression. In E. T. R. E. Barnes, S. L. Anderson, M. P. Paulus, & J. Olivier (Eds.), Current Topics in Behavioral Neurosciences. 2023. Springer, Berlin, Heidelberg.
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Dr. Brandon Weiss
About Us
Brandon Weiss, PhD is a clinical psychologist and Assistant Professor at Johns Hopkins University School of Medicine working in The Center for Psychedelic and Consciousness Research. Ten years ago, he began investigating the role of psychedelics in improving mental health and personality, especially for Veterans suffering with posttraumatic stress.
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