PDFs for papers below are provided for personal use, not distribution, and are provided with the intent of increasing accessibility to science. PDFs have not been provided for book chapters.


Querdasi, F.R., Vogel, S.C., Thomason, M.E., Callaghan, B.L. & Brito, N.H. (2023). A comparison of the infant gut microbiome before vs. after the start of the COVID-19 pandemic. Scientific Reports. Accepted. PDF

Querdasi, F. R., Enders, C. Karnani, N., Broekman, B., Chong, Y. S., Gluckman, P., Daniel, L. M., Yap, F., Eriksson, J., Cai, S., Chong, M., Toh, J. Y., Godfrey, K., Meaney, M. J. & Callaghan, B. L. (2023). Multigenerational adversity impacts on gut microbiome composition and socioemotional functioning in early childhood. Proceedings of the National Academy of Sciences. 120 (30) e2213768120. PDF 

Gancz, N.N., Levinson, J.A., & Callaghan, B.L. (2023). Sex and gender as critical and distinct contributors to the human brain-gut-microbiome axis. Brain Research Bulletin. In press.


Fields, A., Silvers, J.A., Callaghan, B., VanTieghem, M., Choy, T., O’Sullivan, K., & Tottenham, N. (in press). Fear reduces attentional orienting to parents during childhood and adolescence. Journal of Experimental Child Psychology. PDF.

Meyer, H., Fields, A., Gerhard, D., Vannucci, A., Bloom, P., Heleniak, C., Opendak, M., Sullivan, R., Tottenham, N., Callaghan, B.L, & Lee, F. (accepted). The Added Value of Crosstalk Between Developmental Circuit Neuroscience and Clinical Practice to Inform the Treatment of Adolescent Anxiety. Biological Psychiatry: Global Open Science. in press. PDF

Callaghan, B.L., Choy, T., O’Sullivan, K., Routhier, E., Cabrera, N., Goode, V., Klein, T., & Tottenham, N. (2022). Being the Third-Wheel: Toddlers use Bystander Learning to Acquire Cue-Specific Valence Knowledge. Journal of Experimental Child Psychology, 219, 105391. PDF.

Uy, J., Schwartz, C., Chu, K., Towner, E., Lemus, A., Brito, N., & Callaghan, B. (2022). Parenting Under Pressure: Parental transmission and buffering of child fear during the COVID-19 pandemic. Developmental Psychobiology, 64, 3, e22243. PDF.

Callaghan, B.L., McCormack, C., Tottenham, N., & Monk, C. (2022). Evidence for cognitive plasticity during pregnancy via enhanced learning and memory. Memory, 1-18, DOI:10.1080/09658211.2021.2019280. PDF

Korom, M., Callaghan, B. L., VanTieghem M., Silvers, J.A., Choy, T., Kalter, J., Blumenthal, E., Tottenham, N. (2022) Shifting children’s attentional focus to emotions during art museum experiences. British Journal of Developmental Psychology, 40, 73-91. PDF.


Bloom, P., Douglas, I., VanTieghem, M., Choy, T., Fields, A., Tottenham, N., Callaghan, B.L.* (2021). Using gastrointestinal distress reports to predict youth anxiety risk: Implications for mental health literacy and community care. Developmental Psychobiology, 63, e22126. PDF

Chu, K., Schwartz, C., Towner, E., Kasparian, N., & Callaghan, B. L.* (2021). Parenting Under Pressure: A Mixed-Methods Investigation of the Impact of COVID-19 on Family Life. Journal of Affective Disorders Reports, 100161. PDF

Simpson, C.A., Schwartz, O.S., Eliy, D., O’Brien Simpson, N.M., Huang, K., Butler, C., Callaghan, B.L, Dashper, S.G., Gooley, P.R., Whittle, S., Haslam, N., Simmons, J.G. (2021). Bugs and brains, the gut and mental health study: A mixed methods study investigating microbiota composition and function in anxiety, depression and irritable bowel syndrome. BMJ Open. 11.3, e043221. PDF

Callaghan, B.L., Pini, N., Silvers, J.A., VanTieghem, M., Choy, T., O’Sullivan, K., Fifer, W.P., & Tottenham, N. (2021). Parent-child cardiac transference is decreased following disrupted/absent early care. Developmental PsychobiologyPDF

Richardson, R., Bowers, J., Callaghan, B.L., & Baker, K. (2021). Does maternal separation accelerate maturation of perineuronal nets in male and female rats? Developmental Cognitive Neuroscience, 47, 100905. PDF

Callaghan, B.L., Gasser, C., Silvers, J., VanTieghem, M., Choy, T., Fields, A., Davachi, L., & Tottenham, N. (2020). Age-related increases in posterior hippocampal granularity are associated with remote detailed episodic memory in development. The Journal of Neuroscience, 41(8), 1738-1754. PDF


Silvers, J. A., Callaghan, B. L., VanTieghem, M., Choy, T., O’Sullivan, K., & Tottenham, N. (2021). An exploration of amygdalaprefrontal mechanisms in the intergenerational transmission of learned fear. Developmental science, 24(3), e13056. PDF

Vogel, S. C., Brito, N. H., & Callaghan, B. L. (2020). Early Life Stress and the Development of the Infant Gut Microbiota: Implications for Mental Health and Neurocognitive Development. Current Psychiatry Reports. 22-61.  PDF.

Callaghan, B. L. (2020). Nested sensitive periods: how plasticity across the microbiota-gut-brain axis interacts to affect the development of learning and memory. Current Opinion in Behavioral Sciences. 36, 55-62. PDF

Callaghan, B.L. (2020). Commentary: Microbial panaceas. Does development have the answer? Reflections on Cowan, Dinan, &Cryan (2019). Journal of Child Psychology and Psychiatry.  PDF

Callaghan, B.L., Fields, A., Gabard-Durnam, L., Gee, D., Caldera, C., Humphreys, K., Goff, B., Flannery, J., Telzer, E., Shaprio, M., & Tottenham, N. (2020). Mind and gut: Associations between mood and gastrointestinal distress in children exposed to adversity. Development & Psychopathology, 28, 1-20. PDF


Callaghan, B.L., Meyer, H., Opendak, M., VanTieghem, M., Harmon, C., Li, A., Sullivan, R., Lee, F., Tottenham, N. (2019). Using a Developmental Ecology Framework to align fear neurobiology across species. Annual Reviews in Clinical Psychology, 7, 345-359. PDF

Callaghan, B.L., Gee, D., Gabard-Durnam. L.J., Telzer, E., Humphreys, K., Goff, B., Shaprio, M., Flannery, J., Lumien, D., Fareri, D., Caldera, C., Tottenham, N. (2019). Parental buffering protects against anxiety following early adversity: a 5-year longitudinal analysis. Biological Psychiatry: Cognitive Neuroscience and Neuroimaging, 4, 664-671. PDF

Flannery, J. Callaghan, B., Sharpton, T., Fisher, P., Pfeifer, J. (2019). Adolescence: the missing developmental link in gut-brain-microbiome axis communication? Developmental Psychobiology, 61, 783-795. PDF

Firestein, M. Callaghan, B.L. (2019). The Brain-Gut Connection: Environmental influences on gastrointestinal biology and neurobehavior across development. Developmental Psychobiology, 61, 639-639. PDF.


Callaghan, B.L., Dandash, O., Simmons, J., Schwarts, O., Byrne, M. L., Sheeber, L., Allen, N.B., & Whittle, S. (2017). Amygdala resting connectivity mediates the association between maternal aggression and major depressive disorder in adolescents. Journal of the American Academy of Child and Adolescent Psychiatry, 11, 983-991. PDF

Callaghan, B. L., & Fifer, W. (2017). Perinatal attention, learning, and memory during sleep. Enfance. 3, 349-361. PDF.

Callaghan, B. L. (2017). Generational patterns of stress: Help from our microbes? Current Directions in Psychological Science, 26, 323-329. PDF


Callaghan, B.L., Cowan, C1., & Richardson, R. (2016). Treating generational stress: Effect of paternal stress on development of memory and extinction in offspring is reversed by probiotic treatment. Psychological Science, 27, 1171-1180. PDF

Kan, J., Callaghan, B. L., & Richardson, R. (2016). A mother’s past can predict her offspring’s future: Previous maternal separation leads to the emergence of adult like fear behavior in subsequent infant rat offspring. Behavioral Neuroscience, 130, 511-520. PDF

Cowan, C., Callaghan, B.L., & Richardson, R. (2016). The Effects of a Probiotic Formulation (Lactobacillus rhamnosus and L. helveticus) on Developmental Trajectories of Emotional Learning in Stressed Infant Rats. Translational Psychiatry, 6, e823. PDF

Cowan, C., Callaghan, B.L., Kan, J., & Richardson, R. (2016). The lasting impact of early-life adversity on individuals and their descendants: Potential mechanisms and hope for intervention. Genes, Brain, Behavior, 15, 155-168. PDF

Callaghan, B.L., & Tottenham, N. (2016). The stress acceleration hypothesis: Effects of early-life adversity on emotion circuits and behavior. Current Opinion in Behavioral Sciences, 7, 76-81. PDF

Richardson, R., Cowan, C., Callaghan, B.L., Kan, J. (2016). Effects of early-life stress on fear memory in the developing rat. Current Opinion in Behavioral Sciences, 7, 15-20. PDF

Callaghan, B.L., & Tottenham, N. (2016). The neuro-environmental loop of plasticity: Developmental studies of rearing adversity on the human brain. Neuropsychopharmacology Reviews, 41, 163-176. PDF


Callaghan, B.L., & Richardson, R. (2015). The development of fear and its inhibition: Knowledge gained from preclinical models. In K. Ressler, D. Pine, & B. O. Rothbaum (Eds.) Primer on anxiety disorders: Translational perspectives on diagnosis and treatment. Anxiety and Depression Association of America. Oxford University Press: Oxford.


Graham, B.M., Callaghan, B.L., Richardson, R. (2014). Bridging the gap: lessons we have learnt from the merging of psychology and psychiatry for the optimisation of treatments for emotional disorders. Behaviour Research & Therapy, 62, 3-16. PDF

Callaghan, B.L., Howell, B., Sullivan, R., & Tottenham, N. (2014). The International Society for Developmental Psychobiology Sackler Symposium: Early adversity and the maturation of emotion circuits – a cross-species analysis. Developmental Psychobiology, 56, 1635-1650. PDF

Callaghan, B.L., & Richardson, R. (2014). Early emergence of adult-like fear renewal in the rat following chronic corticosterone treatment of the dam or the pups. Behavioral Neuroscience, 128, 594-602. PDF.

Li, S., Callaghan, B.L., & Richardson (2014). Infantile amnesia: Forgotten, but not gone. Learning & Memory, 21, 135-139. PDF

Callaghan, B.L., Li, S., & Richardson, R. (2014). The elusive engram: What infantile amnesia can tell us about memory. Trends in Neurosciences, 37, 47-53. PDF


Callaghan, B.L., Graham, B.M., Li, S., & Richardson, R. (2013). From resilience to vulnerability: Mechanistic insights into the effects of stress on transitions in critical period plasticity. Frontiers in Molecular Psychiatry, 4, 1-15. PDF

Callaghan, B.L., Li, S.L., Kim, J.H., & Richardson, R. (2013). Preclinical analysis of developmental transitions in extinction of learned fear: From infancy through adolescence to adulthood. In D. Hermans, B. Rimé., & B. Mesquita (Eds.), Changing Emotions, pp. 81-88. Psychology Press.

Cowan, C. S. M., Callaghan, B.L., & Richardson, R. (2013). Acute early-life stress results in early emergence of adult-like fear retention and extinction relapse in infant rats. Behavioral Neuroscience, 125, 703-711. PDF

Callaghan, B.L., & Richardson, R. (2013). Early-life experiences and the development of emotional learning in rats. Development of Mood and Anxiety Disorders, 3, article 8. PDF


Callaghan, B.L., & Richardson, R. (2012). The effect of adverse rearing environments on persistent memories in young rats: Removing the brakes on infant fear memory. Translational Psychiatry, 2, e138. PDF

Callaghan, B.L., & Richardson, R. (2012). Early-life stress affects extinction during critical periods of development: An analysis of the effects of maternal-separation on extinction in adolescent rats. Stress, 15, 671-679. PDF


Callaghan, B.L., & Richardson, R. (2011). Maternal separation results in early emergence of adult-like fear and extinction learning in infant rats. Behavioral Neuroscience, 125, 20-28. PDF


Calabria, B., Degenhardt, D., Briegleb, C., Vos, T., Hall, W., Lynskey, M., Callaghan, B.L., Rana, U. & McLaren, J. (2010). Systematic review of prospective studies investigating “remission” from amphetamine, cannabis, cocaine or opioid dependence. Addictive Behaviors, 35, 741-739. PDF