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Brant P. Hasler, Ph.D.

Associate Professor of Psychiatry, Psychology, and Clinical and Translational Science
Department of Psychiatry
3811 O’Hara Street, Room E-1127
Pittsburgh, PA 15213

T: 412-246-6413
F: 412-246-5300

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Current trainees:

  • Garrett Hisler, PhD (primary mentor)
  • Chelsea Vadnie, PhD (secondary mentor)
  • Accepting trainees: Yes


  • BA, Neuroscience & Behavior, Wesleyan University (Middletown, CT), 1994
  • MS, Clinical Psychology, University of Arizona (Tucson, AZ), 2005
  • PhD, Clinical Psychology, University of Arizona (Tucson, AZ), 2009
  • Postdoctoral Fellowship, Translational Research Training in Sleep Medicine (T32), University of Pittsburgh (Pittsburgh, PA), 2009-2012

Research Interests:

Dr. Hasler’s research focuses on the role of sleep and circadian rhythms in regulating affect and motivation, particularly as relevant to affective disorders and substance abuse. In addition to his research program, Dr. Hasler is actively engaged in research mentorship and clinical supervision, as well as direct clinical practice, and is the Co-Director of our accredited Behavioral Sleep Medicine training fellowship.

Current Research Funding:

  • R01 AA025626 (Hasler): Proximal prospective associations between circadian alignment, reward function and alcohol use in adolescents, 2018-2012. Role: PI. NIH RePORTER link
  • R01 DA044143 (Hasler): Delayed sleep phase and risk for adolescent substance use, 2019-2023. Role: PI. NIH RePORTER link
  • R01 AA026249 (Hasler/Pedersen): Positive and negative reinforcement pathways underlying sleep and alcohol use associations, 2019-2023. Role: MPI. NIH RePORTER link
  • AA021690 (Clark): National Consortium on Alcohol and NeuroDevelopment in Adolescence, 2012-2017. Role: Co-I NIH RePORTER link


Selected Publications:

  1. Hasler BP, Bruce S, Scharf D, Clark DB. Circadian misalignment and weekend alcohol use in late adolescent drinkers: Preliminary evidence. Chronobiology International. (in press)
  2. Lebensohn-Chialvo F, Rohrbaugh MJ, Hasler BP, Shoham V. Fidelity failures in family therapy for adolescent drug abuse: A clinical analysis. Family Process. (in press)
  3. *Taylor BJ, Hasler BP. Chronotype and mental health: Recent advances. Current Psychiatry Reports, 20(8), 59-69, 2018.
  4. Logan RW, Hasler BP, Forbes EE, Franzen PL, Torregrossa MM, Huang YH, Buysse DJ, Clark DB, McClung CA.  Impact of sleep and circadian rhythms on addiction vulnerability in adolescents.  Biological Psychiatry, 83, 987-996, 2018.
  5. Hasler BP, Franzen PL, de Zambotti M, Prouty D, Brown SA, Tapert SF, Pfefferbaum A, Pohl KM, Sullivan EV, DeBellis MD, Nagel BJ, Colrain IM, Baker FC, Clark DB. Eveningness and later sleep timing are associated with greater risk for alcohol and marijuana involvement: Initial findings from the NCANDA study. Alcoholism: Clinical and Experimental Research, 41, 1154-1165, 2017. PMCID: PMC5488322
  6. Hasler BP, Casement MD, Sitnick SL, Shaw DS, Forbes EE. Eveningness among late adolescent males predicts neural reactivity to reward and alcohol dependence two years later. Behavioural Brain Research, 327, 112-120, 2017. PMCID: PMC5483989
  7. *Mike T, Sitnick SL, Shaw DS, Forbes EE, Hasler BP. The hazards of bad sleep: Sleep duration and quality as predictors of adolescent alcohol and cannabis use. Drug and Alcohol Dependence, 168, 335-339, 2016. PMCID: PMC5086262
  8. Wong PM, Hasler BP, Kamarck TW, Muldoon MF, Manuck SB. Social jetlag, chronotype, and cardiometabolic risk. The Journal of Clinical Endocrinology & Metabolism, 100, 4612-4620, 2015. PMCID: PMC4667156
  9. Miller MA, Rothenberger SD, Hasler BP, Donofry SD, Wong PM, Manuck SB, Kamarck KA, Roecklein KA. Chronotype predicts positive affect rhythms measured by ecological momentary assessment. Chronobiology International, 32, 376-384, 2015. PMCID: PMC4458846
  10. Gunn HE, Buysse DJ, Hasler BP, Begley A, Troxel WM. Sleep concordance in couples is associated with relationship characteristics. Sleep, 38, 933-939, 2015. PMCID: PMC4434560
  11. Hasler BP, Forbes EE, Franzen PL. Time-of-day differences and short-term stability of the neural response to monetary reward: A pilot study. Psychiatry Research: Neuroimaging, 224, 22-27. PMCID: PMC4157087
  12. Hasler BP, Soehner AM, Clark DB. Sleep and circadian contributions to adolescent alcohol use disorder. Alcohol. (in press) (PMCID: in process
  13. Hasler BP, Martin CS, Wood DS, Rosario B, Clark DB. A longitudinal study of insomnia and other sleep complaints in adolescents with and without alcohol use disorders. Alcoholism: Clinical and Experimental Research, 38, 2225-2233, 2014. PMCID: PMC4146702
  14. Frank E, Sidor MM, Gamble KL, Cirelli C, Sharkey KM, Hoyle N, Tikotzky L, Talbot LS, McCarthy MJ, Hasler BP. Circadian clocks, brain function, and development. Annals of the NY Academy of Sciences. 1306, 43-67, 2013. PMID: 24329517
  15. Hasler BP, Sitnick SL, Shaw DS, Forbes EE. An altered neural response to reward may contribute to alcohol problems among late adolescents with an evening chronotype. Psychiatry Research: Neuroimaging, 214, 357-364, 2013. PMCID: PMC3852171
  16. Hasler BP, Clark DB.   Circadian misalignment, reward functioning, and adolescent alcohol involvement.   Alcoholism: Clinical and Experimental Research. 37(4), 558-565, 2013. PMCID: PMC3843484
  17. Hasler BP, Dahl RE, Holm SM, Jakubcak JL, Ryan ND, Silk JS, Phillips ML, Forbes EE.  Weekend-weekday advances in sleep timing are associated with altered reward-related brain function in healthy adolescents. Biological Psychology, 91, 334-341, 2012.  PMCID: PMC3490026
  18. Velo J, Stewart JL, Hasler BP, Towers DN, Allen JJB. Should it matter when we record? Time of year and time of day as factors influencing frontal EEG asymmetry.  Biological Psychology, 91, 283-291, 2012. PMCID: PMC3530616
  19. Roecklein KA, Wong PM, Franzen PL, Hasler BP, Wood-Vasey WM, Nimgaonkar VL, Miller MA, Ferrell RE, Manuck SB. Melanopsin gene variations interact with season to predict sleep timing and chronotype. Chronobiology International, 29, 1036-1047, 2012. PMCID: PMC3724237
  20. Hasler BP, Germain A, Nofzinger EA, Kupfer DJ, Krafty RT, Rothenberger SD, James JA, Bi W, Buysse DJ.  Chronotype and diurnal patterns of positive affect and affective neural circuitry in primary insomnia.  Journal of Sleep Research, 21, 515-526, 2012. PMCID: PMC3371278
  21. Hasler BP, Smith LJ, Cousins JC, Bootzin RR.  Circadian rhythms, sleep, and substance abuse.  Sleep Medicine Reviews, 16(1), 67-81, 2012. PMCID: PMC3177010
  22. Hasler BP, Troxel WM.  Couples’ nighttime sleep efficiency and concordance: Evidence for bidirectional associations with daytime relationship functioning.  Psychosomatic Medicine, 72(8), 794-801, 2010. PMCID: PMC2950886.
  23. Hasler BP, Buysse DJ, Kupfer DJ, Germain A.  Phase relationships between core body temperature, melatonin, and sleep are associated with depression severity:  Further evidence for circadian misalignment in non-seasonal depression.  Psychiatry Research, 178(1), 205-207, 2010. PMCID: PMC2914120.
  24. Britton WB, Bootzin, RR, Cousins JC, Hasler BP, Peck T, Shapiro SL. The contribution of mindfulness practice to a multi-component behavioral sleep intervention following substance abuse treatment in adolescents: A treatment development study. Substance Abuse, 31(2), 86-97, 2010. †
  25. Hasler BP, Allen JJB, Sbarra DA, Bootzin RR, Bernert RA. Morningness-eveningness and depression: Preliminary evidence for the role of BAS and positive affect.  Psychiatry Research, 176, 166-173, 2010. PMCID: PMC2844473.
  26. Rohrbaugh MJ, Shoham V, Butler EA, Hasler BP, Berman JS. Affective synchrony in dual- and single-smoker couples: Further evidence of “symptom-system fit”?  Family Process, 48(1), 55-67, 2009. PMCID: PMC2774814.
  27. Hasler BP, Mehl MR, Bootzin RR, Vazire S. Preliminary evidence of diurnal rhythms in everyday behaviors associated with positive affect.  Journal of Research in Personality, 42(6), 1537-1546, 2008. 
  28. Hasler BP, Bootzin RR, Cousins JC, Fridel K, Wenk GL. Circadian phase in sleep-disturbed adolescents with a history of substance abuse. Behavioral Sleep Medicine, 6(1), 55-73, 2008.
  29. Lewy AJ, Emens JS, Sack RL, Hasler B, Bernert RA.  Zeitgeber hierarchy in humans: resetting the circadian phase positions of blind people using melatonin. Chronobiology International, 20(5), 837-852, 2003. 
  30. Lewy AJ, Emens JS, Sack RL, Hasler BP, Bernert RA.  Low, but not high, doses of melatonin entrained a free-running blind person with a long circadian period.  Chronobiology International, 19(3), 649-658, 2002. 
  31. Lewy AJ, Hasler BP, Emens JS, Sack RL.  Pretreatment circadian period in free-running blind people may predict the phase angle of entrainment to melatonin.  Neuroscience Letters, 313(3), 158-160, 2001.
  32. Lewy AJ, Bauer VK, Hasler BP, Kendall AR, Pires MLN, Sack RL.  Capturing the circadian rhythms of free-running blind people with 0.5 mg melatonin.  Brain Research, 918(1-2), 96-100, 2001.

Complete List of Published Work in MyBibliography: