Biological bases of face preference in 6-week-old infants

Six-week-old infants (N =40) who started the experiment in either a calm or crying state, received sucrose from an experimenter, while in eye contact with her. Sucrose was delivered either by syringe or on a pacifier. After 3.5 min., the experimenter retired, the mother came into the test room and placed her infant over her shoulder en face with a video camera. The experimenter and a confederate, both dressed identically, sat in front of and slightly to either side of the infant and the infant could choose to look at either experimenter. To minimize position bias, experimenters switched sides every 30 sec. To maintain a stable level of infant attention, they simultaneously called the baby's name at 10 sec. intervals. When an infant looked at one or the other experimenters, she raised her thumb in camera view. Only crying infants who sucked a sweet pacifier showed a preference for their experimenter. As a group none of the other infants did so. However, there was a wide distribution of sucking times in calm week 6 infants. Choice was linearly related to sucking duration. Infants who sucked for substantial periods of time, showed a strong preference for the experimenter. Those who sucked for minimal periods of time strongly preferred the confederate. Based on these findings and ones from 9- and 12-week-old infants, a model is presented in which preference in this experimental paradigm is determined by idealized levels of central activation. These levels may be inferred from the normal crying function at a particular age.     

Maternal Sensitivity: a Resilience Factor against Internalizing Symptoms in Early Adolescents Born Very Preterm?

Compared with full-terms, preterm individuals are more at risk from infancy to adulthood for developing internalizing symptoms. Early maternal interactive behavior, especially maternal sensitivity, has been found to be a resilience factor in the developmental outcome of preterm children. The present longitudinal study aimed at examining whether early interactive parenting behaviors have a long term impact on the internalizing symptoms of preterm-born young adolescents. A total sample of 36 very preterm and 22 full-term children participated in an 11-year follow-up study. Maternal interactive behavior was assessed during a mother–infant interaction when the infant was 18 months old. At 11 years, internalizing symptoms were assessed with the Child Behavior Checklist (CBCL). Hierarchical regression analyses revealed that the interaction between groups (preterm/full-term) and maternal sensitivity at 18 months significantly explained CBCL internalizing symptoms at 11 years (β = ?0.526; p < 0.05). Specifically, although prematurity was related to internalizing problems, preterm children with higher maternal sensitivity did not differ from their full-term-born peers on the CBCL internalizing problems domain. These results suggest that maternal sensitivity is a long-term resilience factor preventing the development of internalizing problems at early adolescence in very preterm individuals.     

Identifying Beneficial Physical Activity During School Recess: Utility and Feasibility of the Fitbit

The purpose of the current study was to assess the utility, feasibility, and reliability of Fitbit accelerometers to measure physical activity (via steps) of 15 young children simultaneously during recess. Fitbit-recorded steps per minute (SPM) were used as the primary measure to assess levels of activity in children playing in various structured (i.e., instructed) and unstructured (i.e., free play) recess activities. The results suggested that the number of steps measured by two Fitbits resulted in high levels of agreement, and the Fitbits were successful at identifying differential levels of activity across multiple types of play activities. Across all children, running or walking was associated with the most SPM (M = 89) and highest percentage of moderate-to-vigorous physical activity (MVPA; M = 47%), followed by soccer (M = 58 SPM; M = 12% MVPA), free play (M = 53 SPM; 3% MVPA), and tag (M = 43 SPM; 7% MVPA). The utility of the Fitbit’s minute-by-minute data records was demonstrated, with the use of additional third-party software by Python, as differential levels of physical activity associated with various play behaviors were detected, and all 15 participants were assessed simultaneously with very few observers.     

The rubber hand illusion in a mirror

In the rubber hand illusion (RHI) one’s hand is hidden, and a fake hand is visible. We explored the situation in which visual information was available indirectly in a mirror. In the mirror condition, compared to the standard condition (fake hand visible directly), we found no reduction of the RHI following synchronised stimulation, as measured by crossmanual pointing and by a questionnaire. We replicated the finding with a smaller mirror that prevented visibility of the face. The RHI was eliminated when a wooden block replaced the fake hand, or when the hand belonged to another person or mannequin. We conclude that awareness of the reflection is the critical variable, despite the distant visual localisation of the hand in a mirror and the third-person perspective. Stimuli seen in a mirror activate the same response as stimuli seen in peripersonal space, through knowledge that they are near one’s body.     

Quality of attachment,perinatal risk,and mother–infant interaction in a high‐risk premature sample

Thirty‐three families, each with a premature infant born less than 33 gestational weeks, were observed in a longitudinal exploratory study. Infants were recruited in a neonatal intensive care unit, and follow‐up visits took place at 4 months and 12 months of corrected age. The severity of the perinatal problems was evaluated using the Perinatal Risk Inventory (PERI; A.P. Scheiner & M.E. Sexton, 1991 ). At 4 months, mother–infant play interaction was observed and coded according to the CARE‐index (P.M. Crittenden, 2003 ); at 12 months, the Strange Situation Procedure (SSP; M.D.S. Ainsworth, M.C. Blehar, E. Waters, & S. Wall, 1978 ) was administered. Results indicate a strong correlation between the severity of perinatal problems and the quality of attachment at 12 months. Based on the PERI, infants with high medical risks more frequently tended to be insecurely attached. There also was a significant correlation between insecure attachment and dyadic play interaction at 4 months (i.e., maternal controlling behavior and infant compulsive compliance). Moreover, specific dyadic interactive patterns could be identified as protective or as risk factors regarding the quality of attachment. Considering that attachment may have long‐term influence on child development, these results underline the need for particular attention to risk factors regarding attachment among premature infants.     

Drinking to cope and alcohol use and abuse in unipolar depression: a 10-year model

This study examined drinking to cope with distress and drinking behavior in a baseline sample of 412 unipolar depressed patients assessed 4 times over a 10-year period. Baseline drinking to cope operated prospectively as a risk factor for more alcohol consumption at 1-, 4-, and 10-year follow-ups and for more drinking problems at 1- and 4-year follow-ups. Findings elucidate a key mechanism in this process by showing that drinking to cope strengthened the link between depressive symptoms and drinking behavior. Individuals who had a stronger propensity to drink to cope at baseline showed a stronger connection between depressive symptoms and both alcohol consumption and drinking problems.     

The ontogeny of face identity; I. Eight- to 21-week-old infants use internal and external face features in identity

A paradigm was designed to study how infants identify live faces. Eight- to 21-week-old infants were seated comfortably and were presented an adult female, dressed in a white laboratory coat and a white turtle neck sweater, until habituation ensued. The adult then left the room. One minute later either she or an identically garbed confederate returned. Looking time did not increase above habituation levels when the original experimenter returned, but increased substantially when the confederate entered the room. Furthermore, internal features alone could serve as the basis of face identity. Looking times of infants who had habituated to experimenters with masked outer features of hair, ears and neck also markedly increased when a second identically dressed experimenter returned. Identity in this instance could only be based on internal facial characteristics. A second study assessed the contributions of internal and external facial features to identity. Infants were habituated to an experimenter in a short wig. One minute later they saw her again, either in the same short wig or in a long one. Alternatively, they saw a second experimenter wearing either the short wig or the long one. Infants looked longer only to the stranger wearing the long wig. Very brief looking times occurred to the familiar adult, regardless of wig, and to the stranger wearing the familiar wig. This paradigm provides an approach to discover rules used by infants of different ages to process and identify adult faces and to establish the bases of face preference.     

Development and Content Validity of the Participation and Sensory Environment Questionnaire

Qualitative methodology was used to develop items for a questionnaire designed to examine the perspectives of parents regarding the impact of the sensory environment on participation for children aged 3 to 5 who have autism spectrum disorders. A total of 34 parents/caregivers of children with autism spectrum disorders and 8 experts in autism spectrum disorders and/or measurement completed qualitative interviews for concept, content review, and cognitive interviewing. The result was a pool of 35 items for home/community domains for 3 scales. The outcome of this study was the development and content validation of the Participation and Sensory Environment Questionnaire.     

Further evaluation of observational and mechanical measures of physical activity

Recent behavioral research has used a variety of methods to quantify physical activity, including direct observation using the Observational System for Recording Physical Activity (OSRAC), and automated devices such as heart rate (HR) monitors, pedometers, and Fitbit Accelerometers. The current study evaluated the concurrent validity of these measures, as well as the reliability of the pedometers and Fitbits. Four children engaged in 15 activities listed in the OSRAC coding system while their HRs and steps taken were measured. The results indicated that for most activities, HR covaried with the OSRAC activity levels, although some exceptions were noted. Steps per minute as measured by the Fitbit also covaried with the OSRAC activity levels and Fitbit data were reliable when activities did not involve subjects losing contact with the ground. Pedometers produced similar but less reliable steps per minute data.     

Tax communication and social influence: evidence from a British sample

An in‐depth, semi‐structured, interview study was conducted with 23 British employed and self‐employed taxpayers in various occupations. The study points to factors discouraging tax communication and proposes social norms as an alternative way of investigating social influence on taxpaying behaviour. Copyright © 1999 John Wiley & Sons, Ltd.