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Humphreys KL, Garon-Bissonnette J, Hill KE, Bailes LG, Barnett W, Hare MM. Caregiving relationships are a cornerstone of developmental psychopathology. Dev Psychopathol 2024:1-14. [PMID: 38389283 PMCID: PMC11341779 DOI: 10.1017/s0954579424000300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
The interdisciplinary field of developmental psychopathology has made great strides by including context into theoretical and empirical approaches to studying risk and resilience. Perhaps no context is more important to the developing child than their relationships with their caregivers (typically a child's parents), as caregivers are a key source of stimulation and nurturance to young children. Coupled with the high degree of brain plasticity in the earliest years of life, these caregiving relationships have an immense influence on shaping behavioral outcomes relevant to developmental psychopathology. In this article, we discuss three areas within caregiving relationships: (1) caregiver-child interactions in everyday, naturalistic settings; (2) caregivers' social cognitions about their child; and (3) caregivers' broader social and cultural context. For each area, we provide an overview of its significance to the field, identify existing knowledge gaps, and offer potential approaches for bridging these gaps to foster growth in the field. Lastly, given that one value of a scientific discipline is its ability to produce research useful in guiding real-world decisions related to policy and practice, we encourage developmental psychopathology to consider that a focus on caregiving, a modifiable target, supports this mission.
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Affiliation(s)
| | | | - Kaylin E. Hill
- Vanderbilt University, Department of Psychology and Human Development
| | - Lauren G. Bailes
- Vanderbilt University, Department of Psychology and Human Development
| | - Whitney Barnett
- Vanderbilt University, Department of Psychology and Human Development
| | - Megan M. Hare
- Vanderbilt University, Department of Psychology and Human Development
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Cychosz M, Edwards JR, Munson B, Romeo R, Kosie J, Newman RS. The everyday speech environments of preschoolers with and without cochlear implants. JOURNAL OF CHILD LANGUAGE 2024:1-22. [PMID: 38362892 PMCID: PMC11327381 DOI: 10.1017/s0305000924000023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Children who receive cochlear implants develop spoken language on a protracted timescale. The home environment facilitates speech-language development, yet it is relatively unknown how the environment differs between children with cochlear implants and typical hearing. We matched eighteen preschoolers with implants (31-65 months) to two groups of children with typical hearing: by chronological age and hearing age. Each child completed a long-form, naturalistic audio recording of their home environment (appx. 16 hours/child; >730 hours of observation) to measure adult speech input, child vocal productivity, and caregiver-child interaction. Results showed that children with cochlear implants and typical hearing were exposed to and engaged in similar amounts of spoken language with caregivers. However, the home environment did not reflect developmental stages as closely for children with implants, or predict their speech outcomes as strongly. Home-based speech-language interventions should focus on the unique input-outcome relationships for this group of children with hearing loss.
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Valentino K, Edler K. The next generation of developmental psychopathology research: Including broader perspectives and becoming more precise. Dev Psychopathol 2024:1-10. [PMID: 38351870 PMCID: PMC11322423 DOI: 10.1017/s0954579424000142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
The current Special Issue marks a major milestone in the history of developmental psychopathology; as the final issue edited by Cicchetti, we have an opportunity to reflect on the remarkable progress of the discipline across the last four decades, as well as challenges and future directions for the field. With contemporary issues in mind, including rising rates of psychopathology, health disparities, and international conflict, as well as rapid growth and accessibility of digital and mobile technologies, the discipline of developmental psychopathology is poised to advance multidisciplinary, developmentally- and contextually- informed research, and to make substantial progress in supporting the healthy development of individuals around the world. We highlight key future directions and challenges for the next generation of developmental psychopathology research including further investigation of culture at multiple levels of analysis, incorporation of macro-level influences into developmental psychopathology research, methods advances to address heterogeneity in translational research, precision mental health, and the extension of developmental psychopathology research across the lifespan.
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Carolus AE, McLaughlin KA, Lengua LJ, Rowe ML, Sheridan MA, Zalewski M, Moran L, Romeo RR. Conversation disruptions in early childhood predict executive functioning development: A longitudinal study. Dev Sci 2024; 27:e13414. [PMID: 37226555 PMCID: PMC10667565 DOI: 10.1111/desc.13414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/26/2023]
Abstract
Conversational turn-taking is a complex communicative skill that requires both linguistic and executive functioning (EF) skills, including processing input while simultaneously forming and inhibiting responses until one's turn. Adult-child turn-taking predicts children's linguistic, cognitive, and socioemotional development. However, little is understood about how disruptions to temporal contingency in turn-taking, such as interruptions and overlapping speech, relate to cognitive outcomes, and how these relationships may vary across developmental contexts. In a longitudinal sample of 275 socioeconomically diverse mother-child dyads (children 50% male, 65% White), we conducted pre-registered examinations of whether the frequency of dyads' conversational disruption during free play when children were 3 years old related to children's executive functioning (EF; 9 months later), self-regulation skills (18 months later), and externalizing psychopathology in early adolescence (age 10-12 years). Contrary to hypotheses, more conversational disruptions significantly predicted higher inhibition skills, controlling for sex, age, income-to-needs (ITN), and language ability. Results were driven by maternal disruptions of the child's speech, and could not be explained by measures of overall talkativeness or interactiveness. Exploratory analyses revealed that ITN moderated these relationships, such that the positive effect of disruptions on inhibition was strongest for children from lower ITN backgrounds. We discuss how adult-driven "cooperative overlap" may serve as a form of engaged participation that supports cognition and behavior in certain cultural contexts.
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Affiliation(s)
- Amy E. Carolus
- University of North Carolina Chapel Hill, Department of Psychology
- Harvard University, Department of Psychology
| | | | | | | | | | | | | | - Rachel R. Romeo
- Harvard University, Department of Psychology
- University of Maryland College Park, Department of Human Development and Quantitative Methodology
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Malachowski L, Salo VC, Needham AW, Humphreys KL. Infant Placement and Language Exposure in Daily Life. INFANT AND CHILD DEVELOPMENT 2023; 32:e2405. [PMID: 37694273 PMCID: PMC10488907 DOI: 10.1002/icd.2405] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 01/12/2023] [Indexed: 02/05/2023]
Abstract
Children's daily contexts shape their experiences. In this study we assessed whether variations in infant placement (e.g., held, bouncy seat) are associated with infants' exposure to adult speech. Using repeated survey sampling of mothers and continuous audio recordings, we tested whether use of independence-supporting placements was associated with adult speech exposure in a Southeastern U.S. sample of 60 4- to 6- month- old infants (38% male, predominately White, not Hispanic/Latinx, from higher SES households). Within-subject analyses indicated that independence-supporting placements were associated with exposure to fewer adult words in the moment. Between-subjects analyses indicated that infants more frequently reported to be in independence-supporting placements that also provided posture support (i.e., exersaucer) were exposed to fewer adult words and less consistent adult speech across the day. These findings indicate that infants' opportunities for exposure to adult speech "in the wild" may vary based on immediate physical context.
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Affiliation(s)
| | - Virginia C Salo
- Department of Psychology and Human Development, Vanderbilt University
| | - Amy Work Needham
- Department of Psychology and Human Development, Vanderbilt University
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King LS, Feddoes DE, Kirshenbaum JS, Humphreys KL, Gotlib IH. Pregnancy during the pandemic: the impact of COVID-19-related stress on risk for prenatal depression. Psychol Med 2023; 53:170-180. [PMID: 33781354 PMCID: PMC8047399 DOI: 10.1017/s003329172100132x] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/12/2021] [Accepted: 03/25/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Pregnant women may be especially susceptible to negative events (i.e. adversity) related to the coronavirus disease 2019 (COVID-19) pandemic and negative affective responses to these events (i.e. stress). We examined the latent structure of stress and adversity related to the COVID-19 pandemic among pregnant women, potential antecedents of COVID-19-related stress and adversity in this population, and associations with prenatal depressive symptoms. METHOD We surveyed 725 pregnant women residing in the San Francisco Bay Area in March-May 2020, 343 of whom provided addresses that were geocoded and matched by census tract to measures of community-level risk. We compared their self-reported depressive symptoms to women matched on demographic factors and history of mental health difficulties who were pregnant prior to the pandemic. RESULTS Women who were pregnant during the pandemic were nearly twice as likely to have possible depression than were matched women who were pregnant prior to the pandemic. Individual- and community-level factors tied to socioeconomic inequality were associated with latent factors of COVID-19-related stress and adversity. Beyond objective adversity, subjective stress responses were strongly associated with depressive symptoms during the pandemic. CONCLUSIONS Highlighting the role of subjective responses in vulnerability to prenatal depression and factors that influence susceptibility to COVID-19-related stress, these findings inform the allocation of resources to support recovery from this pandemic and future disease outbreaks. In addition to policies that mitigate disruptions to the environment due to the pandemic, treatments that focus on cognitions about the self and the environment may help to alleviate depressive symptoms in pregnant women.
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Affiliation(s)
- Lucy S. King
- Department of Psychology, Stanford University, Stanford, CA, USA
| | - Daisy E. Feddoes
- Department of Psychology, Stanford University, Stanford, CA, USA
| | | | - Kathryn L. Humphreys
- Department of Psychology and Human Development, Vanderbilt University, Nashville, TN, USA
| | - Ian H. Gotlib
- Department of Psychology, Stanford University, Stanford, CA, USA
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Salo VC, King LS, Gotlib IH, Humphreys KL. Infants who experience more adult-initiated conversations have better expressive language in toddlerhood. INFANCY 2022; 27:916-936. [PMID: 35775622 PMCID: PMC10009899 DOI: 10.1111/infa.12487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/01/2022] [Accepted: 06/06/2022] [Indexed: 11/29/2022]
Abstract
To understand how infants become engaged in conversations with their caregivers, we examined who tends to initiate conversations between adults and infants, differences between the features of infant- and adult-initiated conversations, and whether individual differences in how much infants engage in infant- or adult-initiated conversations uniquely predict later language development. We analyzed naturalistic adult-infant conversations captured via passive recording of the daily environment in two samples of 6-month-old infants. In Study 1, we found that at age 6 months, infants typically engage in more adult- than infant-initiated conversations and that adult-initiated conversations are, on average, longer and contain more adult words. In Study 2, we replicated these findings and, further, found that infants who engaged in more adult-initiated conversations in infancy had better expressive language at age 18 months. This association remained significant when accounting for the number of infant-initiated conversations at 6 months. Our findings indicate that early interactions with caregivers can have a lasting impact on children's language development, and that the extent to which parents initiate interactions with their infants may be particularly important.
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Affiliation(s)
- Virginia C Salo
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland, USA.,Department of Psychology and Human Development, Vanderbilt University, Nashville, Tennessee, USA
| | - Lucy S King
- Department of Psychology, Stanford University, Stanford, California, USA
| | - Ian H Gotlib
- Department of Psychology, Stanford University, Stanford, California, USA
| | - Kathryn L Humphreys
- Department of Psychology and Human Development, Vanderbilt University, Nashville, Tennessee, USA
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Measuring naturalistic proximity as a window into caregiver-child interaction patterns. Behav Res Methods 2022; 54:1580-1594. [PMID: 34505995 PMCID: PMC8907335 DOI: 10.3758/s13428-021-01681-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/03/2021] [Indexed: 12/27/2022]
Abstract
The interactions most supportive of positive child development take place in moments of close contact with others. In the earliest years of life, a child's caregivers are the primary partners in these important interactions. Little is known about the patterns of real-life physical interactions between children and their caregivers, in part due to an inability to measure these interactions as they occur in real time. We have developed a wearable, infrastructure-free device (TotTag) used to dynamically and unobtrusively measure physical proximity between children and caregivers in real time. We present a case-study illustration of the TotTag with data collected over two (12-hour) days each from two families: a family of four (30-month-old son, 61-month-old daughter, 37-year-old father, 37-year-old mother), and a family of three (12-month-old daughter, 35-year-old-father, 33-year-old mother). We explored patterns of proximity within each parent-child dyad and whether close proximity would indicate periods in which increased opportunity for developmentally critical interactions occur. Each child also wore a widely used wearable audio recording device (LENA) to collect time-synced linguistic input. Descriptive analyses reveal wide variability in caregiver-child proximity both within and across dyads, and that the amount of time spent in close proximity with a caregiver is associated with the number of adult words and conversational turns to which a child was exposed. This suggests that variations in proximity are linked to-though, critically, not synonymous with-the quantity of a child's exposure to adult language. Potential implications for deepening the understanding of early caregiver-child interactions are discussed.
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King LS, Humphreys KL, Cole DA, Gotlib IH. Hair cortisol concentration across the peripartum period: Documenting changes and associations with depressive symptoms and recent adversity. COMPREHENSIVE PSYCHONEUROENDOCRINOLOGY 2022; 9:100102. [PMID: 35755930 PMCID: PMC9216355 DOI: 10.1016/j.cpnec.2021.100102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 11/16/2022] Open
Abstract
Women experience dramatic physiological changes during pregnancy, including changes in the production of the “stress hormone,” cortisol. Evidence has been mixed regarding whether hair cortisol concentration (HCC) can be used to accurately capture the trajectory of cortisol during this period and whether factors related to psychosocial stress are related to HCC in pregnant and postpartum women. In the current study, we collected hair samples from 85 individuals during the peripartum period (with collection occasions in pregnancy [12–37 weeks], at 3–8 weeks postpartum, and at 5–8 months postpartum) from which we derived 783 monthly observations of HCC. In addition, at each assessment individuals reported their current depressive symptoms and experiences of recent psychosocial adversity. Using piecewise mixed effects modeling, we identified significant increases in HCC across pregnancy (approximately a 2-fold rise) followed by significant decreases in HCC postpartum. Beyond these effects, however, there was substantial within-individual variability in HCC. Disaggregating between- from within-individual associations of depressive symptoms and adversity with HCC, we found that within-individual fluctuations in adversity were positively coupled with levels of HCC. Overall, the current findings suggest that measurement of cortisol in human hair captures its trajectory from conception through six months postpartum, including prenatal increases and gradual recovery of typical levels following childbirth. In addition to the overall severity of psychosocial adversity, change in women's experiences of adversity during the peripartum period merit attention. We analyzed monthly estimates of hair cortisol concentration (HCC) across the peripartum period. HCC increased across pregnancy and decreased through six months postpartum. There was substantial within-person variability in HCC. Within-person fluctuations in recent adversity were positively coupled with HCC. Depressive symptoms were not significantly associated with HCC.
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Affiliation(s)
- Lucy S. King
- Department of Psychiatry and Behavioral Sciences, Tulane University School of Medicine, New Orleans, LA, USA
- Department of Psychology, University of Texas at Austin, Austin, TX, USA
- Corresponding author. Tulane University, Department of Psychiatry and Behavioral Sciences, New Orleans, LA, 70112, USA.
| | - Kathryn L. Humphreys
- Department of Psychology and Human Development, Vanderbilt University, Nashville, TN, USA
| | - David A. Cole
- Department of Psychology and Human Development, Vanderbilt University, Nashville, TN, USA
| | - Ian H. Gotlib
- Department of Psychology, Stanford University, Stanford, CA, USA
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de Barbaro K, Fausey CM. Ten lessons about infants' everyday experiences. CURRENT DIRECTIONS IN PSYCHOLOGICAL SCIENCE 2022; 31:28-33. [PMID: 36159505 PMCID: PMC9499013 DOI: 10.1177/09637214211059536] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Audio recorders, accelerometers, and cameras that infants wear throughout their everyday lives capture the experiences that are available to shape development. Everyday sensing in infancy reveals patterns within the everyday hubbub that are unknowable using methods that capture shorter, more isolated, or more planned slices of behavior. Here, we review ten lessons learned from recent endeavors that removed researchers from designing or participating in infants' experiences and instead quantified patterns that arose within infants' own spontaneously arising everyday experiences. The striking heterogeneity of experiences - there is no meaningfully "representative" hour of a day, instance of a category, interaction context, or infant - inspires next steps in theory and practice that embrace the complex, dynamic, and multiple pathways of human development.
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Affiliation(s)
- Kaya de Barbaro
- Department of Psychology, The University of Texas at Austin, SEA 4.208, 108 E. Dean Keaton Stop A8000, Austin, TX 78712-1043
| | - Caitlin M. Fausey
- Department of Psychology, University of Oregon, 1227 University of Oregon, Eugene, OR, 97403
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King LS, Salo VC, Kujawa A, Humphreys KL. Advancing the RDoC initiative through the assessment of caregiver social processes. Dev Psychopathol 2021; 33:1648-1664. [PMID: 34311802 PMCID: PMC8792111 DOI: 10.1017/s095457942100064x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The relationships infants and young children have with their caregivers are fundamental to their survival and well-being. Theorists and researchers across disciplines have attempted to describe and assess the variation in these relationships, leading to a general acceptance that caregiving is critical to understanding child functioning, including developmental psychopathology. At the same time, we lack consensus on how to assess these fundamental relationships. In the present paper, we first review research documenting the importance of the caregiver-child relationship in understanding environmental risk for psychopathology. Second, we propose that the National Institute of Mental Health's Research Domain Criteria (RDoC) initiative provides a useful framework for extending the study of children's risk for psychopathology by assessing their caregivers' social processes. Third, we describe the units of analysis for caregiver social processes, documenting how the specific subconstructs in the domain of social processes are relevant to the goal of enhancing knowledge of developmental psychopathology. Lastly, we highlight how past research can inform new directions in the study of caregiving and the parent-child relationship through this innovative extension of the RDoC initiative.
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Affiliation(s)
- Lucy S King
- Department of Psychology, Stanford University, Stanford, CA, USA
| | - Virginia C Salo
- Department of Psychology and Human Development, Vanderbilt University, Nashville, TN, USA
| | - Autumn Kujawa
- Department of Psychology and Human Development, Vanderbilt University, Nashville, TN, USA
| | - Kathryn L Humphreys
- Department of Psychology and Human Development, Vanderbilt University, Nashville, TN, USA
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McLaughlin KA, Sheridan MA, Humphreys KL, Belsky J, Ellis BJ. The Value of Dimensional Models of Early Experience: Thinking Clearly About Concepts and Categories. PERSPECTIVES ON PSYCHOLOGICAL SCIENCE 2021; 16:1463-1472. [PMID: 34491864 PMCID: PMC8563369 DOI: 10.1177/1745691621992346] [Citation(s) in RCA: 130] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We review the three prevailing approaches-specificity, cumulative risk, and dimensional models-to conceptualizing the developmental consequences of early-life adversity and address fundamental problems with the characterization of these frameworks in a recent Perspectives on Psychological Science piece by Smith and Pollak. We respond to concerns raised by Smith and Pollak about dimensional models of early experience and highlight the value of these models for studying the developmental consequences of early-life adversity. Basic dimensions of adversity proposed in existing models include threat/harshness, deprivation, and unpredictability. These models identify core dimensions of early experience that cut across the categorical exposures that have been the focus of specificity and cumulative risk approaches (e.g., abuse, institutional rearing, chronic poverty); delineate aspects of early experience that are likely to influence brain and behavioral development; afford hypotheses about adaptive and maladaptive responses to different dimensions of adversity; and articulate specific mechanisms through which these dimensions exert their influences, conceptualizing experience-driven plasticity within an evolutionary-developmental framework. In doing so, dimensional models advance specific falsifiable hypotheses, grounded in neurodevelopmental and evolutionary principles, that are supported by accumulating evidence and provide fertile ground for empirical studies on early-life adversity.
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Affiliation(s)
| | - Margaret A. Sheridan
- Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill
| | | | - Jay Belsky
- Department of Human Ecology, University of California at Davis
| | - Bruce J. Ellis
- Departments of Psychology and Anthropology, University of Utah
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King LS, Camacho MC, Montez DF, Humphreys KL, Gotlib IH. Naturalistic Language Input is Associated with Resting-State Functional Connectivity in Infancy. J Neurosci 2021; 41:424-434. [PMID: 33257324 PMCID: PMC7821865 DOI: 10.1523/jneurosci.0779-20.2020] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 09/11/2020] [Accepted: 10/30/2020] [Indexed: 12/14/2022] Open
Abstract
The quantity and quality of the language input that infants receive from their caregivers affects their future language abilities; however, it is unclear how variation in this input relates to preverbal brain circuitry. The current study investigated the relation between naturalistic language input and the functional connectivity (FC) of language networks in human infancy using resting-state functional magnetic resonance imaging (rsfMRI). We recorded the naturalistic language environments of five- to eight-month-old male and female infants using the Linguistic ENvironment Analysis (LENA) system and measured the quantity and consistency of their exposure to adult words (AWs) and adult-infant conversational turns (CTs). Infants completed an rsfMRI scan during natural sleep, and we examined FC among regions of interest (ROIs) previously implicated in language comprehension, including the auditory cortex, the left inferior frontal gyrus (IFG), and the bilateral superior temporal gyrus (STG). Consistent with theory of the ontogeny of the cortical language network (Skeide and Friederici, 2016), we identified two subnetworks posited to have distinct developmental trajectories: a posterior temporal network involving connections of the auditory cortex and bilateral STG and a frontotemporal network involving connections of the left IFG. Independent of socioeconomic status (SES), the quantity of CTs was uniquely associated with FC of these networks. Infants who engaged in a larger number of CTs in daily life had lower connectivity in the posterior temporal language network. These results provide evidence for the role of vocal interactions with caregivers, compared with overheard adult speech, in the function of language networks in infancy.
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Affiliation(s)
- Lucy S King
- Department of Psychology, Stanford University, Stanford, California 94305
| | - M Catalina Camacho
- Division of Biology and Biomedical Science, Washington University in St. Louis, St. Louis, Missouri 63110
| | - David F Montez
- Department of Neurology, Washington University in St. Louis, St. Louis, Missouri 63110
| | - Kathryn L Humphreys
- Department of Psychology and Human Development, Vanderbilt University, Nashville, Tennessee 37235
| | - Ian H Gotlib
- Department of Psychology, Stanford University, Stanford, California 94305
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