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Associations between multisystem stress reactivity and peer nominated aggression in early childhood vary by sex

Published online by Cambridge University Press:  11 January 2021

Melissa J. Hagan*
Affiliation:
Psychology Department, San Francisco State University, San Francisco, CA, USA Department of Psychiatry, University of California, San Francisco, CA, USA
Danielle S. Roubinov
Affiliation:
Departments of Psychiatry and Pediatrics, University of California, San Francisco, CA, USA
W. Thomas Boyce
Affiliation:
Departments of Psychiatry and Pediatrics, University of California, San Francisco, CA, USA
Nicole R. Bush
Affiliation:
Departments of Psychiatry and Pediatrics, University of California, San Francisco, CA, USA
*
Author for Correspondence: Melissa J. Hagan, San Francisco State University, College of Sciences and Engineering, Department of Psychology, 1600 Holloway Avenue, San Francisco, CA94132; E-mail: [email protected]

Abstract

There is emerging evidence that the development of problematic aggression in childhood may be associated with specific physiological stress response patterns, with both biological overactivation and underactivation implicated. This study tested associations between sex-specific patterns of stress responses across the sympathetic nervous system (SNS) and hypothalamic–pituitary–adrenal (HPA) axis and peer nominations of aggression among 271 kindergarten children (Mean age = 5.32 years; 52% Female; 44% White). Upon entry to kindergarten, children participated in a multidomain standardized stress paradigm. Changes in pre-ejection period (PEP) and salivary cortisol were assessed. On a separate day, children provided peer ratings of physical and relational aggression in a standardized interview. As expected, there was a significant three-way interaction between PEP, cortisol reactivity, and sex, but only for physical aggression. Among boys, cortisol reactivity was positively associated with physical aggression only for those with higher SNS reactivity. Findings suggest that for boys, asymmetrical and symmetrical HPA/SNS reactivity may be associated with lower and higher risk for peer-directed physical aggression, respectively. Understanding the complex associations between multisystem physiology, child sex and peer-directed aggression in early childhood may offer insight into individual differences underlying the emergence of behavioral dysregulation in early peer contexts.

Type
Special Section 2: Early Adversity and Development: Contributions from the Field
Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press

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References

American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed). Arlington, VA: Author.Google Scholar
Baron, R. M., & Kenny, D. A. (1986). The moderator-mediator variable distinction in social psychological research: conceptual, strategic, and statistical considerations. Journal of Personality and Social Psychology, 51, 11731182. doi:10.1037/0022-3514.51.6.1173CrossRefGoogle ScholarPubMed
Bauer, A. M., Quas, J. A., & Boyce, W. T. (2002). Associations between physiological reactivity and children's behavior: advantages of a multisystem approach. Journal of Developmental and Behavioral Pediatrics : JDBP, 23, 102113. doi:10.1097/00004703-200204000-00007CrossRefGoogle ScholarPubMed
Beauchaine, T. P., Hong, J., & Marsh, P. (2008). Sex differences in autonomic correlates of conduct problems and aggression. Journal of the American Academy of Child and Adolescent Psychiatry, 47, 788796. doi:10.1097/CHI.Ob013e318172ef4bCrossRefGoogle ScholarPubMed
Bosch, J. A., de Geus, E. J. C., Carroll, D., Goedhart, A. D., Anane, L. A., van Zanten, J. J. V., … Edwards, K. M. (2009). A general enhancement of autonomic and cortisol responses during social evaluative threat. Psychosomatic Medicine, 71, 877885. doi:10.1097/PSY.0b013e3181baef05CrossRefGoogle ScholarPubMed
Boyce, W. T., Chesney, M., Alkon, A., Tschann, J. M., Adams, S., Chesterman, B., … Wara, D. (1995). Psychobiologic reactivity to stress and childhood respiratory illnesses: results of two prospective studies. Psychosomatic Medicine, 57, 411422. doi:10.1097/00006842-199509000-00001.CrossRefGoogle ScholarPubMed
Bukowski, W. M., Cillessen, A. H. N., & Velasquez, A. M. (2012). Peer ratings. In Laursen, B., Little, T. D., & Card, N. A. (Eds.), Handbook of developmental research methods (pp. 211228). New York, NY: Guilford. Retrieved from https://psycnet.apa.org/record/2012-07988-013.Google Scholar
Bush, N. R., Alkon, A., Obradović, J., Stamperdahl, J., & Thomas Boyce, W. (2011). Differentiating challenge reactivity from psychomotor activity in studies of children's psychophysiology: Considerations for theory and measurement. Journal of Experimental Child Psychology, 110, 6279. doi:10.1016/j.jecp.2011.03.004CrossRefGoogle Scholar
Cacioppo, J. T., Malarkey, W. B., Kiecolt-Glaser, J. K., Uchino, B. N., Sgoutas-Emch, S. A., Sheridan, J. F., … Glaser, R. (1995). Heterogeneity in neuroendocrine and immune responses to brief psychological stressors as a function of autonomic cardiac activation. Psychosomatic Medicine, 57, 154164. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/7792374 10.1097/00006842-199503000-00008CrossRefGoogle ScholarPubMed
Carrasco, G. A., & Van de Kar, L. D. (2003). Neuroendocrine pharmacology of stress. European Journal of Pharmacology, 463, 235272. doi:10.1016/s0014-2999(03)01285-8CrossRefGoogle ScholarPubMed
Chen, F. R., Raine, A., Soyfer, L., & Granger, D. A. (2015). Interaction of adrenocortical activity and autonomic arousal on children's externalizing and internalizing behavior problems. Journal of Abnormal Child Psychology, 43, 189202. doi:10.1007/s10802-014-9900-yCrossRefGoogle ScholarPubMed
Cicchetti, D., & Gunnar, M. R. (2008). Integrating biological measures into the design and evaluation of preventive interventions. Development and Psychopathology, 20, 737743. doi:10.1017/S0954579408000357CrossRefGoogle ScholarPubMed
Cicchetti, D., & Toth, S. L. (2009). The past achievements and future promises of developmental psychopathology: The coming of age of a discipline. Journal of Child Psychology and Psychiatry and Allied Disciplines, 50, 1625. doi:10.1111/j.1469-7610.2008.01979.xCrossRefGoogle ScholarPubMed
Cillessen, A. H. (2009). Sociometric methods. In Rubin, K. H., Bukowski, W., & Laursen, B. (Eds.), Social, emotional, and personality development in context. Handbook of peer interactions, relationship, and groups (pp. 8299). New York, NY: Guilford Press. Retrieved from https://psycnet.apa.org/record/2008-19117-005Google Scholar
Crick, N. R., Casas, J. F., & Ku, H. (1999). Physical and relational peer victimization in preschool. Developmental Psychology, 35, 376385.10.1037/0012-1649.35.2.376CrossRefGoogle ScholarPubMed
Crick, N. R., Casas, J. F., & Mosher, M. (1997). Relational and overt aggression in preschool. Developmental Psychology, 33, 579588. doi:10.1037/0012-1649.33.4.579CrossRefGoogle ScholarPubMed
Crick, N. R., & Grotpeter, J. K. (1995). Relational aggression, gender, and social-psychological adjustment. Child Development, 66, 710. doi:10.2307/1131945CrossRefGoogle ScholarPubMed
Crick, N. R., Ostrov, J. M., Burr, J. E., Cullerton-Sen, C., Jansen-Yeh, E., & Ralston, P. (2006). A longitudinal study of relational and physical aggression in preschool. Journal of Applied Developmental Psychology, 27, 254268. doi:10.1016/j.appdev.2006.02.006CrossRefGoogle Scholar
Del Giudice, M., Ellis, B. J., & Shirtcliff, E. A. (2011). The adaptive calibration model of stress responsivity. Neuroscience and Biobehavioral Reviews, 35, 15621592. doi:10.1016/j.neubiorev.2010.11.007CrossRefGoogle ScholarPubMed
Dickerson, S. S., & Kemeny, M. E. (2004). Acute stressors and cortisol responses: A theoretical integration and synthesis of laboratory research. Psychological Bulletin, 130, 355391. doi:10.1037/0033-2909.130.3.355CrossRefGoogle ScholarPubMed
Doom, J. R., & Gunnar, M. R. (2013). Stress physiology and developmental psychopathology: past, present, and future. Development and Psychopathology, 25, 13591373. doi:10.1017/S0954579413000667CrossRefGoogle ScholarPubMed
Doussard-Roosevelt, J. A., Montgomery, L. A., & Porges, S. W. (2003). Short-term stability of physiological measures in kindergarten children: Respiratory sinus arrhythmia, heart period, and cortisol. Developmental Psychobiology, 43, 230242. doi:10.1002/dev.10136CrossRefGoogle ScholarPubMed
El-Sheikh, M., Erath, S. A., Buckhalt, J. A., Granger, D. A., & Mize, J. (2008). Cortisol and children's adjustment: The moderating role of sympathetic nervous system activity. Journal of Abnormal Child Psychology, 36, 601611. doi:10.1007/s10802-007-9204-6CrossRefGoogle ScholarPubMed
Ellis, B. J., Oldehinkel, A. J., & Nederhof, E. (2017). The adaptive calibration model of stress responsivity: An empirical test in the Tracking Adolescents’ Individual Lives Survey study. Development and Psychopathology, 29, 10011021. doi:10.1017/S0954579416000985CrossRefGoogle ScholarPubMed
Engel, M. L., & Gunnar, M. R. (2020). The development of stress reactivity and regulation during human development. International Review of Neurobiology, 150, 4176. doi:10.1016/bs.irn.2019.11.003CrossRefGoogle ScholarPubMed
Erath, S. A., El-Sheikh, M., Hinnant, J. B., & Cummings, E. M. (2011). Skin conductance level reactivity moderates the association between harsh parenting and growth in child externalizing behavior. Developmental Psychology, 47, 693706. doi:10.1037/a0021909CrossRefGoogle ScholarPubMed
Gordis, E. B., Granger, D. A., Susman, E. J., & Trickett, K. (2006). Asymmetry between salivary cortisol and alpha-amylase reactivity to stress: Relation to aggressive behavior in adolescents. Psychoneuroendocrinology, 31, 976987. doi:10.1016/j.psyneuen.2006.05.010CrossRefGoogle ScholarPubMed
Gruenewald, T. L., Kemeny, M. E., Aziz, N., & Fahey, J. L. (2004). Acute Threat to the Social Self: Shame, Social Self-esteem, and Cortisol Activity. Psychosomatic Medicine, 66, 915924. doi:10.1097/01.psy.0000143639.61693.efCrossRefGoogle Scholar
Guerra, N. G., & Leidy, M. S. (2008). Lessons learned: recent advances in understanding and preventing childhood aggression. Advances in Child Development and Behavior, 36, 287330. doi:10.1016/S0065-2407(08)00007-4CrossRefGoogle ScholarPubMed
Gunnar, M. R. (2017). Social buffering of stress in development: a career perspective. Perspectives on Psychological Science, 12, 355373. doi:10.1177/1745691616680612CrossRefGoogle ScholarPubMed
Gunnar, M. R., Sebanc, A. M., Tout, K., Donzella, B., & Van Dulmen, M. M. H. (2003). Peer rejection, temperament, and cortisol activity in preschoolers. Developmental Psychobiology, 43, 346368. doi:10.1002/dev.10144CrossRefGoogle ScholarPubMed
Gunnar, M. R., Talge, N. M., & Herrera, A. (2009). Stressor paradigms in developmental studies: What does and does not work to produce mean increases in salivary cortisol. Psychoneuroendocrinology, 34, 953967. doi:10.1016/j.psyneuen.2009.02.010CrossRefGoogle Scholar
Hamre, B. K., & Pianta, R. C. (2001). early teacher-child relationships and the trajectory of children's school outcomes through eighth grade. Child Development, 72, 625638. doi:10.2307/1132418CrossRefGoogle ScholarPubMed
Hastings, P. D., Shirtcliff, E. A., Klimes-Dougan, B., Allison, A. L., Derose, L., Kendziora, K. T., … Zahn-Waxler, C. (2011). Allostasis and the development of internalizing and externalizing problems: Changing relations with physiological systems across adolescence. Development and Psychopathology, 23, 11491165. doi:10.1017/S0954579411000538CrossRefGoogle ScholarPubMed
Hinshaw, S. P. (1987). On the distinction between attentional deficits/hyperactivity and conduct problems/aggression in child psychopathology. Psychological Bulletin, 101, 443463. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/3602250 10.1037/0033-2909.101.3.443CrossRefGoogle ScholarPubMed
Hodges, E. V. E., & Perry, D. G. (1999). Personal and interpersonal antecedents and consequences of victimization by peers. Journal of Personality and Social Psychology, 76(4), 677685. http://dx.doi.org/10.1037/0022-3514.76.4.677.CrossRefGoogle ScholarPubMed
Hostinar, C. E., & Gunnar, M. R. (2013). Future directions in the study of social relationships as regulators of the HPA axis across development. Journal of Clinical Child & Adolescent Psychology, 42, 564575. doi:10.1080/15374416.2013.804387CrossRefGoogle Scholar
Hubbard, J. A., Smithmyer, C. M., Ramsden, S. R., Elizabeth, H., Flanagan, K. D., Dearing, K. F., … Simons, R. F. (2002). Observational, physiological and self-report measures of children's anger: Relations to reactive versus proactive aggression. Child Development, 73, 11011118.10.1111/1467-8624.00460CrossRefGoogle ScholarPubMed
Johnson, A. E., Perry, N. B., Hostinar, C. E., & Gunnar, M. R. (2019). Cognitive–affective strategies and cortisol stress reactivity in children and adolescents: Normative development and effects of early life stress. Developmental Psychobiology, 61, 9991013. doi:10.1002/dev.21849CrossRefGoogle ScholarPubMed
Kelsey, R. M., Reiff, S., Wiens, S., Schneider, T. R., Mezzacappa, E. S., & Guethlein, W. (1998). The ensemble-averaged impedance cardiogram: An evaluation of scoring methods and interrater reliability. Psychophysiology, 35, 337340. doi:10.1017/S0048577298001310CrossRefGoogle ScholarPubMed
Koss, K. J., George, M. R. W., Cummings, E. M., Davies, P. T., El-Sheikh, M., & Cicchetti, D. (2014). Asymmetry in children's salivary cortisol and alpha-amylase in the context of marital conflict: Links to children's emotional security and adjustment. Developmental Psychobiology, 56, 836849. doi:10.1002/dev.21156CrossRefGoogle Scholar
Koss, K., & Gunnar, M. R. (2018). Annual research review: Early adversity, the hypothalamic–pituitary–adrenocortical axis, and child psychopathology. Journal of Child Psychology and Psychiatry and Allied Disciplines, 59, 327346. doi:10.1111/jcpp.12784CrossRefGoogle ScholarPubMed
Kozak, M. J., & Cuthbert, B. N. (2016). The NIMH research domain criteria initiative: background, issues, and pragmatics. Psychophysiology, 53, 286297. doi:10.1111/psyp.12518CrossRefGoogle ScholarPubMed
Ladd, G. W., & Burgess, K. B. (2001). Do relational risks and protective factors moderate the linkages between childhood aggression and early psychological and school adjustment? Child Development, 72, 15791601. doi:10.1111/1467-8624.00366CrossRefGoogle ScholarPubMed
Lisonbee, J. A., Pendry, P., Mize, J., & Gwynn, E. P. (2010). Hypothalamic-pituitary-adrenal and sympathetic nervous system activity and children's behavioral regulation. Mind, Brain, and Education, 4, 171181. doi:10.1111/j.1751-228X.2010.01096.xCrossRefGoogle Scholar
Loman, M. M., & Gunnar, M. R. (2010). Early experience and the development of stress reactivity and regulation in children. Neuroscience and Biobehavioral Reviews, 34, 867876. doi:10.1016/j.neubiorev.2009.05.007CrossRefGoogle ScholarPubMed
Martin, C. L., & Ruble, D. N. (2010). Patterns of gender development. Annual Review of Psychology, 61, 353381. doi:10.1146/annurev.psych.093008.100511CrossRefGoogle ScholarPubMed
Mcevoy, M. A., Estrem, T. L., Rodriguez, M. C., & Olson, M. L. (2003). Assessing relational and physical aggression intermethod agreement. Topics in Early Childhood Special Education, 23, 5161.CrossRefGoogle Scholar
Mills-Koonce, W. R., Wagner, N. J., Willoughby, M. T., Stifter, C., Blair, C., & Granger, D. A. (2015). Greater fear reactivity and psychophysiological hyperactivity among infants with later conduct problems and callous-unemotional traits. Journal of Child Psychology and Psychiatry and Allied Disciplines, 56, 147154. doi:10.1111/jcpp.12289CrossRefGoogle ScholarPubMed
Murray-Close, D., Breslend, N. L., & Holterman, L. A. (2018). Psychophysiological indicators of relational aggression. In Coyne, S. & Ostrov, J. M. (Eds.), The Development of Relational Aggression (pp. 127151). New York: Oxford University Press.Google Scholar
Murray-Close, D., & Crick, N. R. (2007). Gender differences in the association between cardiovascular reactivity and aggressive conduct ⋆. International Journal of Psychophysiology, 65, 103113. doi:10.1016/j.ijpsycho.2007.03.011CrossRefGoogle Scholar
Murray-Close, D., Han, G., Cicchetti, D., Crick, N. R., & Rogosch, F. A. (2008). Neuroendocrine regulation and physical and relational aggression : The moderating roles of child maltreatment and gender. Developmental Psychology, 44, 11601176. doi:10.1037/a0012564CrossRefGoogle ScholarPubMed
Nederhof, E., Marceau, K., Shirtcliff, E. A., Hastings, P. D., & Oldehinkel, A. J. (2015). Autonomic and adrenocortical interactions predict mental health in late adolescence: The TRAILS Study. Journal of Abnormal Child Psychology, 43, 847861. doi:10.1007/s10802-014-9958-6CrossRefGoogle ScholarPubMed
Obradović, J., Bush, N. R., Stamperdahl, J., Adler, N. E., & Boyce, W. T. (2010). Biological sensitivity to context: The interactive effects of stress reactivity and family adversity on socioemotional behavior and school readiness. Child Development, 81, 270289. doi:10.1111/j.1467-8624.2009.01394.xCrossRefGoogle ScholarPubMed
Ortiz, J., & Raine, A. (2004). Heart rate level and antisocial behavior in children and adolescents: a meta-analysis. Journal of the American Academy of Child and Adolescent Psychiatry, 43, 154162. doi:10.1097/00004583-200402000-00010CrossRefGoogle ScholarPubMed
Ostrov, J. M., & Crick, N. R. (2005). Current directions in the study of relational aggression during early childhood. Early Education and Development, 16, 109113.10.1207/s15566935eed1602_1CrossRefGoogle Scholar
Ostrov, J. M., & Keating, C. F. (2004). Gender differences in preschool aggression during free play and structured interactions: An observational study. Social Development, 13, 255277.10.1111/j.1467-9507.2004.000266.xCrossRefGoogle Scholar
Park, Sunhee, & Lake, Eileen T. (2005). Multilevel Modeling of a Clustered Continuous Outcome. Nursing Research, 54(6), 406413. http://dx.doi.org/10.1097/00006199-200511000-00007.CrossRefGoogle ScholarPubMed
Perry, N. B., Donzella, B., Parenteau, A. M., Desjardins, C., & Gunnar, M. R. (2019). Emotion regulation and cortisol reactivity during a social evaluative stressor: A study of post-institutionalized youth. Developmental Psychobiology, 61, 557572. doi:10.1002/dev.21828CrossRefGoogle ScholarPubMed
Posthumus, J. A., Böcker, K. B. E., Raaijmakers, M. A. J., Van Engeland, H., & Matthys, W. (2009). Heart rate and skin conductance in four-year-old children with aggressive behavior. Biological Psychology, 82, 164168. doi:10.1016/j.biopsycho.2009.07.003CrossRefGoogle ScholarPubMed
Preacher, K. J., Curran, P. J., & Bauer, D. J. (2006). Computational tools for probing interactions in multiple linear regression, multilevel modeling, and latent curve analysis. Journal of Educational and Behavioral Statistics, 31, 437448. doi:10.3102/10769986031004437CrossRefGoogle Scholar
Quas, J. A., Yim, I. S., Oberlander, T. F., Nordstokke, D., Essex, M. J., Armstrong, J. M., … Boyce, W. T. (2014). The symphonic structure of childhood stress reactivity: Patterns of sympathetic, parasympathetic, and adrenocortical responses to psychological challenge. Development and Psychopathology, 26, 963982. doi:10.1017/S0954579414000480CrossRefGoogle ScholarPubMed
Rotenberg, S., & Mcgrath, J. J. (2016). Inter-relation between autonomic and HPA axis activity in children and adolescents. Biological Psychology, 117, 1625. doi:10.1016/j.biopsycho.2016.01.015CrossRefGoogle ScholarPubMed
Roubinov, D. S., Hagan, M. J., Boyce, W. T., Essex, M. J., & Bush, N. R. (2017). Child temperament and teacher relationship interactively predict cortisol expression: The prism of classroom climate. Development and Psychopathology, 29, 17631775. doi:10.1017/S0954579417001389CrossRefGoogle ScholarPubMed
Sapolsky, R. M., Romero, L. M., & Munck, A. U. (2000). how do glucocorticoids influence stress responses? Preparative actions. Endocrine Reviews, 21, 5589. doi:10.1210/er.21.1.55Google ScholarPubMed
Scarpa, A., Haden, S. C., & Tanaka, A. (2010). Being hot-tempered: Autonomic, emotional, and behavioral distinctions between childhood reactive and proactive aggression. Biological Psychology, 84, 488496. doi:10.1016/j.biopsycho.2009.11.006CrossRefGoogle ScholarPubMed
Schommer, N. C., Hellhammer, D. H., & Kirschbaum, C. (2003). Dissociation between reactivity of the hypothalamus-pituitary-adrenal axis and the sympathetic-adrenal-medullary system to repeated psychosocial stress. Psychosomatic Medicine, 65, 450460. doi:10.1097/01.PSY.0000035721.12441.17CrossRefGoogle ScholarPubMed
Sijtsema, J. J., Shoulberg, E. K., & Murray-Close, D. (2011). Physiological reactivity and different forms of aggression in girls: Moderating roles of rejection sensitivity and peer rejection. Biological Psychology, 86, 181192. doi:10.1016/j.biopsycho.2010.11.007CrossRefGoogle ScholarPubMed
Snoek, H., Van Goozen, S. H. M., Matthys, W., Buitelaar, J. K., & Van Engeland, H. (2004). Stress responsivity in children with externalizing behavior disorders. Development and Psychopathology, 16, 389406. doi:10.1017/S0954579404044578CrossRefGoogle ScholarPubMed
Stadler, C., Kroeger, A., Weyers, P., Grasmann, D., Horschinek, M., Freitag, C., & Clement, H.-W. (2011). Cortisol reactivity in boys with attention-deficit/hyperactivity disorder and disruptive behavior problems: The impact of callous unemotional traits. Psychiatry Research, 187, 204209. doi:10.1016/j.psychres.2010.05.004CrossRefGoogle ScholarPubMed
Uchino, B. N., Cacioppo, J. T., Malarkey, W., & Glaser, R. (1995). Individual differences in cardiac sympathetic control predict endocrine and immune responses to acute psychological stress. Journal of Personality and Social Psychology, 69, 736743. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/7473028 10.1037/0022-3514.69.4.736CrossRefGoogle ScholarPubMed
Ulrich-Lai, Y. M., & Herman, J. P. (2009). Neural regulation of endocrine and autonomic stress responses. Nature Reviews Neuroscience, 10, 397409. doi:10.1038/nrn2647CrossRefGoogle ScholarPubMed
Van Goozen, S. H. M., Fairchild, G., Snoek, H., & Harold, G. T. (2007). The evidence for a neurobiological model of childhood antisocial behavior. Psychological Bulletin, 133, 149182. doi:10.1037/0033-2909.133.1.149CrossRefGoogle ScholarPubMed
Van Goozen, S. H. M., Matthys, W., Cohen-Kettenis, P. T., Buitelaar, J. K., & Van Engeland, H. (2000). Hypothalamic-pituitary-adrenal axis and autonomic nervous system activity in disruptive children and matched controls. Journal of the American Academy of Child & Adolescent Psychiatry, 39, 14381445. doi:10.1097/00004583-200011000-00019CrossRefGoogle ScholarPubMed
Wright, N., Hill, J., Pickles, A., & Sharp, H. (2019). Callous-unemotional traits, low cortisol reactivity and physical aggression in children: findings from the Wirral Child Health and Development Study. Translational Psychiatry, 9, 1. doi:10.1038/s41398-019-0406-9CrossRefGoogle ScholarPubMed
Zisner, A. R., & Beauchaine, T. P. (2016). Psychophysiological methods and developmental psychopathology. In Cicchetti, D. (Ed.), Developmental Psychopathology (pp. 832884). Hoboken, NJ: Wiley. doi:10.1002/9781119125556.devpsy222Google Scholar