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No description available.

No description available.

No description available.

The purpose of this study is to investigate the relationship among the number of toys in an infant’s play environment, infant’s distractibility, and how often a mother teaches her infant during a play session. This study takes samples from videotapes of 12-month old children playing with their mothers during a 5 minute free-play situation. Twenty-two mother and infant pairs were selected for this study based on their previous participation in a language study. The measures used in this study were: (1) the number of maternal teaching utterances to her infant; (2) the total number of utterances that mother used during the play session with the child; (3) the number of toys that were visible in the room; (4) the factors that distracted the infant during the play session; and (5) the type of toy the infant choses to engage with.

Studies on the effects of immigration are becoming more important as the number of immigrants into the United States continues to grow. This study was implemented in order to discover the infant feeding practices and beliefs of Haitians living in Central Florida. A food frequency card sort and interview were conducted with thirty-four Haitian mothers. Mothers were asked to identify which foods they fed their children. Foods pictured on the cards included a majority of Haitian staple foods, some of which are primary to the American diet as well. Low food feeding frequencies were generally attributed to lack of access to foods or lack of funds. Inexpensive foods, such as rice and beans, which are staples to the Haitian diet, remain prevalent in infant feeding among Haitians living in the United States. However, more American starches like potatoes and cereals are replacing other Haitian staples, such as yams and yuca. This study suggests that dietary acculturation among Haitian Americans is occurring, but not rapidly in this population. Furthermore, women did not express a strong relationship between beliefs about particular foods and infant health.

BACKGROUND: The DoHAD hypothesis suggests that preterm infants should achieve similar growth and body composition to healthy term-born infants in order to minimize disease risk. Postnatal growth of preterm infants is not fully understood and requires additional characterization, particularly in terms of differences to and transition from intrauterine growth. The period of postnatal adaptation to extrauterine life has been described in preterm infants by Rochow et al., 2016 and was seen to last 21 days. During these first 21 days of life, preterm infants experience a physiological, one-time, permanent contraction of extracellular water spaces (water loss), which causes a downward shift in the growth trajectories. This period of adaptation/water loss and the transition to extrauterine growth rates to achieve WHOGS target trajectories need to be incorporated into individual reference curves for preterm infants. OBJECTIVES: To develop and evaluate approaches to establish individualized growth trajectories for preterm infants to achieve growth similar to the WHO growth standards (WHOGS) for healthy infants at term, using recently published data about the physiological postnatal adaptation. METHODS: Two approaches were compared: 1) Postnatal-Percentile Approach: growth following the percentile at day of life (DOL) 21 until term; 2) Growth-Velocity Approach: using day-specific Fenton median growth velocities between DOL 21 and term. The impact of these approaches were compared using body compositions of 57 healthy preterm infants obtained before discharge (36+0/7 to 42+6/7 weeks PMA). The main outcome was the weight difference between the predicted trajectory and WHOGS target at 42+0/7 weeks PMA for the infants’ birth weight percentile. RESULTS: Postnatal-Percentile Approach: Trajectories deviated by up to 930g and did not match with WHOGS. Growth-Velocity Approach: Trajectories converged with term WHOGS after adjusting growth velocities with a factor of 1.0017 (approximately 10% increase in daily growth velocities). The validation of the Growth-Velocity Approach in preterm infants with minimal medical interventions revealed little deviation between predicted and actual weights. Infants were symmetrically distributed around zero deviation with a mean deviation of -10±370g and an average of 20% fat mass. In contrast, the Postnatal-Percentile Approach showed large deviations between predicted and actual weights and a skewed distribution around zero deviation with a mean deviation of -310±380g or 70±350g, following the birth or DOL 21 percentile, respectively. CONCLUSIONS: Individualized growth trajectories for preterm infants converged with the WHOGS when Fenton daily median growth velocities were applied and optimized with a single factor. The simplicity of the model and its ability to predict target weights that correspond to an appropriate fat mass suggests a biological principle. These results provide a superior understanding of preterm infant’s growth including the physiological postnatal adaptation and new trajectories to achieve WHOGS target trajectories. Results can be used to develop a bedside tool to aid clinicians in monitoring growth, guiding nutrition and preventing chronic adult diseases as a consequence of unguided, inappropriate growth. / Thesis / Master of Science (MSc) / It has been well established that growth of preterm infants has a long-term impact on health in adulthood. Since the survivability of preterm infants has drastically improved in the last decades, there has been a shift in focus to improving quality of life, including improved growth. Infants that grow too quickly or too slowly may develop inappropriate body compositions, with either too much or too little fat. A sub-optimal body composition can put infants at an increased risk for developing cardiovascular, metabolic or neurodevelopmental diseases later in life. In order to prevent these diseases and optimize growth, it is necessary to have a better understanding of how preterm infants should grow. This thesis aims to improve the characterization of growth for preterm infants by providing individual reference growth trajectories for preterm infants that take into consideration postnatal adaptation and aim to minimize later disease risk.

PURPOSE: There is a growing body of research, supported by the discussion of developmental cascades, that indicates that communication and motor development are inextricably linked. Previous studies have demonstrated that the acquisition of certain motor milestones (i.e., sitting, walking, reaching) are associated with an infant’s subsequent emerging language abilities, however these studies often relied solely on parental reports due to the challenging nature of assessing prelinguistic infants' language abilities. Building on previous work that has established longitudinal links between specific gross motor milestones at 6 months and indicators of children's subsequent language at 10-14 months (Libertus & Violi, 2016), the present study aimed to extend this work by investigating objective measures of motor skills and their relation to an infant’s measures of expressive and receptive language at later time points using more nuanced, sensitive, and objective measures. METHODS: 24 typically developing infants and their demographic, motor, speech, and language data were selected from a larger longitudinal study in collaboration with researchers at the University of Pittsburgh. The infant’s motor and language abilities were assessed at different time points using parent reports, standardized measures, and fine-grained analysis of infant vocalization. RESULTS: Gross motor skills (as indicated by the Alberta Infant Motor Scale) at 6 months were found to have a significant positive correlation with receptive language abilities at 12 months. In turn, language as indicated by number of vocalizations but not motor skills at 12 months was found to significantly contribute to the prediction of expressive language abilities at 24 months. CONCLUSION: These results suggest that an infant’s early motor skills may play a role in subsequent language development through interactions that support the notion of developmental cascades. These results support previous findings linking motor skills and emerging language development as well as extend this relationship in typically developing infants using objective measures of motor and language abilities.

A recent focus of our Program for the Study of Infancy is the extent to which lab assistants retain fidelity when implementing experimental protocols. Dixon et al. showed that experimenters’ implementations of some aspects of standardized protocols can be influenced by infants’ temperaments. Ellefson and Oppenheimer further found that procedural deviations reduce effect sizes and lead to heterogeneity of findings. In this project, we evaluated archival videos involving experimenters’ implementations of two elicited imitation tasks, “Feed Bear” and “Make a Rattle.” In both tasks, experimenters were assumed to adhere to a narrative script and procedure, which included familiarizing infants with experimental stimuli for 60 seconds prior to infants engaging the tasks. Experimenters were also expected to adhere to a standardized narrative script that accompanied the modeling of “feeding the bear” or “making a rattle.” In this study we explored whether they did so, independent of infants' temperament characteristics. Ten experimenters guided sixty-one 15-month-olds through the experimental procedure. We examined two types of dependent measures reflecting 1) whether experimenters adhered to the 60 second familiarization time protocol, and 2) whether experimenters adhered to the standardized scripts. We also tracked experimenter infant-directed speech (IDS) before the model (prologue IDS) and after the model (epilogue IDS), to see if experimenters’ speech was potentially influenced by infant temperament. Infant temperament was measured by parent-report using the Early Childhood Behavior Questionnaire (ECBQ). For familiarization times in the Feed Bear task, experimenters granted significantly longer times to the infants than they were supposed to [M = 68.72, SD = 17.14; t(28) = 2.74, p = .011]. But there were no differences among the experimenters in familiarization time. For Make a Rattle, experimenters were on-target with their familiarization times (M = 67.64, SD = 21.38). Infant temperament was not associated with familiarization times in either task. In terms of IDS, experimenters used more words in the standardized narratives of both tasks than they were supposed to [M = 123.90, SD = 18.03; t(28) = 7.73, p M = 109.00, SD = 9.52; t(27) = 15.01, p < .001] respectively. There was no association between IDS during the narrative phase and infant temperament. However, there were associations between infant temperament and IDS during the prologue and epilogue phases; namely for effortful control (prologue r = .29, p p < .05), impulsivity (prologue r = .23, p p

Neonatal palliative care (NPC) is an emerging subset of care in United States (US) neonatal intensive care units (NICUs) that provides relief for both infants and families at the end of life for infants with terminal diagnoses. Families play a large role in the decision-making process for their infant, but their experiences with and perceptions of the support and care provided to them via NPC is unclear. This literature review summarizes the state of knowledge on parents' perspectives of NPC while focusing on the specific factors that influence their experiences and satisfaction with NPC. This literature review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Findings of the literature review broadly include the importance of consistent communication with providers, parental involvement in the care process, and the minimization of infant suffering. Providers must focus on these important quality indicators to ensure they provide the best care possible to the patients and families that they serve. Further research must be done to investigate parent satisfaction and needs in relation to NPC more deeply and to develop interventions and protocols that better incorporate these needs.