<p> Short-term longitudinal study of mother-infant feeding interactions is rare in the infant obesity, growth, eating disorder, and attachment research. Beginning at birth through 3 months of age, this case-study replication series utilized archival data of 12 mother-infant pairs videotaped during weekly bottle-feeding sessions in their homes. Measures included infant weight and length and amount of food ingested. Videotapes were scored according to five infant and nine maternal observed feeding behaviors scaled on the Interaction Rating Scale - Feeding Ratings, a global measure of mother-infant feeding interactions. Study hypotheses proposed that the more optimal the mothers&rsquo; or infants&rsquo; behaviors, the larger the weight or BMI of the infant or the more food the infant ingested at a feeding session. Spearman rank-order correlation time-point analyses on 69 feeding observations showed statistically significant relationships. All combined infant behavior ratings as well as specific infant behavior ratings of State Rating, Physical Activity, and Gaze Behavior were significantly related to larger infant weight or infant BMI. Regarding maternal behavior ratings, statistically significant negative correlations were found between Persistence in Feeding and infant weight, Contingent Vocalization and BMI, and Gaze Behavior and amount of food ingested. These results have implications for further theorizing about the early antecedents of pediatric obesity in particular, but also for the development of caregiver-infant attachment in general.</p>

<p> <b>Background:</b> Previous studies have related adverse childhood experiences (ACE) to heart disease. However, more research needs to explore neural mechanisms and psychological factors that contribute to the pathway of adverse childhood experiences leading to heart disease. <b>Purpose: </b> The present study examines racial identity as a moderator of adverse childhood experiences and cardiac autonomic dysregulation as indexed by respiratory sinus arrhythmia. <b>Method:</b> Forty-six undergraduate students of African descent attending a Historically Black University in the Mid-Atlantic region of the United States participated in this study. During the first phase, participants completed consent forms and questionnaires including the ACE Scale and the Cross Racial Identity Scale. Participants returned to the laboratory on a second occasion during which researchers employed an impedance cardiograph to record resting levels of interbeat intervals (IBI) and respiratory sinus arrhythmia (RSA). <b>Results:</b> Ordinary least squares regression analyses were conducted to test the moderating role of racial identity attitudes on the relationship between ACE prevalence and RSA. The overall regression model which included ACE prevalence, Multiculturalist attitudes, gender, and all interaction terms significantly predicted resting IBI. The overall model that included ACE prevalence, Afrocentric attitudes, gender, and all interaction terms also significantly predicted resting IBI. Participants with ACE and Afrocentric attitudes were more likely to have decreased resting RSA. Furthermore, in addition to ACE prevalence and Afrocentric attitudes, considering gender added 10% more explanatory variance in predicting resting RSA. Male participants with ACE and low Afrocentricity ratings were more likely to have decreased resting RSA. Additionally, considering gender with ACE prevalence and Miseducation attitudes added 10% more explanatory variance in predicting resting RSA. <b> Discussion:</b> Results and limitations are further discussed in the context of existing literature.</p><p>

Previous research using violation-of-expectation paradigms suggests that very young infants have a good understanding of unobserved physical events. Yet toddlers appear to lack this knowledge when confronted with the door task, a visuospatial reasoning task which parallels ones used in the habituation/looking time studies. Many studies have been conducted in an effort to determine why toddlers perform poorly on the door task yet the answer remains unclear. The current study used a correlational approach to investigate door task performance from both psychological (executive function), and neuroscience (prefrontal cortex) perspectives. Children between the ages of 2½–3 years were tested on the standard door task as well as four other tasks. Three of the tasks were believed to activate prefrontal cortex: the three boxes-stationary, a spatial working memory task; the three boxes-scrambled, a non-spatial working memory task; and the three pegs task, an inhibitory control task. The fourth task was a recognition memory task which had been previously linked to the medial temporal lobe. Only a single task, the three pegs task, was found to correlate with door task performance (r = .510, p<.01). Even with age, sex, and performance on the other tasks controlled for, this correlation remained significant (r = .459, p<.05). Furthermore, in a logistic regression the three pegs task was found to be the only significant predictor of door task performance (z = 2.87, p<.01). An examination of the errors children made on the door task revealed that over half (58%) could be classified as inhibitory control errors (children returned to the previously rewarded location or repeatedly searched a favorite door). Taken together these data suggest a possible relationship between inhibitory control ability and successful completion of the door task.

Abstract not available