Faculty

Brant P Hasler, PhD

Brant P Hasler, PhD

Associate Professor of Psychiatry, Clinical and Translational Science, and Psychology

Contact Details

3811 O'Hara St.
Pittsburgh
 
PA
 
15213
Email
Website
Center for Sleep and Circadian Science

Education & Training

PhD
Clinical Psychology, University of Arizona, School of Mind, Brain and Behavior
Clinical Psychology, Western Psychiatric Institute and Clinic of UPMC
Translational Research Training in Sleep Medicine, University of Pittsburgh

Specialty Certifications

Board Certification
Board of Behavioral Sleep Medicine (Diplomate in Behavioral Sleep Medicine (DBSM))

Professional Affiliations

Member, Sleep Research Society
Member, Association for Psychological Science
Member, Research Society on Alcoholism

Selected Honors & Awards

Mentor-Mentee Award, Sleep Research Society
Philip Troen, MD Excellence in Medical Student Research Mentoring Award, University of Pittsburgh School of Medicine

Research Interests

Sleep and circadian rhythms; Affective neuroscience; Mood and substance use disorders
Selected Research Publications & Products
  1. Hasler BP, Oryshkewych N, Wallace ML, Clark DB, Siegle GJ, Buysse DJ. Circadian phase in high school students: Weekday-weekend shifts and relationships to other sleep/circadian characteristics. SLEEP, 48, zsaf031, 2025. PMCID: PMC11985389
  2. Hasler BP, Schulz CT, Pedersen SL. Sleep-related risk for alcohol use and related problems in adolescents and young adults. Alcohol Research: Current Reviews, 44(1), 2024. PMCID: PMC10948113
  3. Hasler BP, Wallace ML, Graves JL, Molina BSG, Pedersen SL. Circadian preference is associated with multiple domains of trait and state level impulsivity. Chronobiology International, 39, 792-804, 2022. PMCID: PMC9117436
  4. Hasler BP, Soehner AM, Wallace ML, Logan RW, Ngari W, Forbes EE, Buysse DJ, Clark DB. Experimentally imposed circadian misalignment alters the neural response to monetary rewards and response inhibition in healthy adolescents. Psychol Med. 2021 Mar 17:1-9. doi: 10.1017/S0033291721000787. Epub ahead of print. PMID: 33729109; PMCID: PMC8935965.
  5. Hasler BP, Graves JL, Wallace ML, Claudatos S, Franzen PL, Nooner KB, Brown SA, Tapert SF, Baker, FC, Clark DB. Self-reported sleep and circadian characteristics predict alcohol and cannabis use: A longitudinal analysis of the National Consortium on Alcohol and Neurodevelopment in Adolescence Study. Alcoholism: Clinical and Experimental Research, 46, 848-860, 2022. PMCID: PMC9179040. DOI:10.1111/acer.14808

Clinical Interests

Behavioral sleep medicine; Chronotherapeutics
Selected Clinical Publications & Products
  1. Wescott DL, Hasler BP. Targeting Circadian Factors in Cognitive-Behavioral Therapy for Insomnia. Chapter in edited volume Cognitive Behavioral Therapy for Insomnia in the Context of Comorbid Mental Health Conditions, Goldstein AN, Manber R (Eds.), American Psychiatric Association Publishing, 2025.
  2. Evans MA, Hasler BP. Chapter 3 CBT-I for patients with phase disorders or insomnia with circadian misalignment. In Cognitive Behavior Therapy for Insomnia. Cuddihy L, Garland S, Grander M, Nowakoski S (Eds.), San Diego, CA, Academic Press, 2021, p. 63-95.

Education Interests

Research mentorship; Supervision in behavioral sleep medicine

Health Psychology: Effect of Daily Discrimination on Naturalistic Sleep Health Features in Young Adults

Dr. Sarah Pedersen

Poor sleep health is associated with negative physical and mental health outcomes. Some populations—including Black individuals and those with other minoritized racial and ethnic identities—experience inequities in sleep health. The determinants of sleep health inequities are complex and include social, environmental, behavioral, and biological factors. In particular, interpersonal discrimination can contribute to...

New Research: Self-reported Sleep and Circadian Characteristics Predict Alcohol and Cannabis Use

Although multiple specific sleep characteristics can contribute to risk factors for alcohol and cannabis use and related problems in later adolescence and young adulthood, most research has examined a limited range of sleep characteristics within a narrow age span. In a recent study, Pitt Psychiatry investigators including Brant Hasler, PhD (Associate Professor of Psychiatry, Psychology, and Clinical and...

University of Pittsburgh Awards Tenure to Brant Hasler, PhD

University of Pittsburgh Awards Tenure to Brant Hasler, PhD

We are delighted to announce that Brant Hasler, PhD, has been appointed Tenured Associate Professor of Psychiatry by the University of Pittsburgh. Dr. Hasler’s research focuses on the role of sleep and circadian rhythms in regulating affect and motivation, particularly as they pertain to affective disorders and substance abuse in adolescents. He uses a combination of experimental and observational methods—including...

New Research in Psychological Medicine and Human Brain Mapping on the Effects of Disrupted Sleep and Early Life Stress in Young People

New Research on the Effects of Disrupted Sleep and Early Life Stress in Young People

Psychological Medicine: Experimentally Imposed Circadian Misalignment Alters the Neural Response to Monetary Rewards and Response Inhibition in Healthy Adolescents During adolescence, circadian rhythm and natural sleep and wake times shift later, which can conflict with early school-start times. This incongruence commonly results in circadian misalignment (mismatch between the behavioral sleep-wake schedule and the...

Pitt Psychiatry Hosts a Tremendous Research “Half” Day

2021 Research Day

On June 9, 2021, the Department of Psychiatry held its 2nd virtual Research Day, featuring presentations on health equity research, a speed dat(a)ing session, a keynote address, and honors and awards. The event was billed as a Research “Half” Day, as we hope and expect for the second half of the event, a poster session, to occur in person. (Date: October 5, 2021. Stay tuned to our events page for details!) Below is...