Overshadowing and CS duration: counteraction and a reexamination of the role of within-compound associations in cue competition

In the present experiments, we examined the role of within-compound associations in the interaction of the overshadowing procedure with conditioned stimulus (CS) duration, using a conditioned suppression procedure with rats. In Experiment 1, we found that, with elemental reinforced training, conditioned suppression to the target stimulus decreased as CS duration increased (i.e., the CS duration effect), whereas, with compound reinforced training (i.e., the overshadowing procedure), conditioned suppression to the target stimulus increased as CS duration increased. In subsequent experiments, we replicated these findings with sensory preconditioning and demonstrated that extinction of the overshadowing stimulus results in retrospective revaluation with short CSs and in mediated extinction with long CSs. These results highlight the role of the duration of the stimulus in behavioral control. Moreover, these results illuminate one cause (the CS duration) of whether retrospective revaluation or mediated extinction will be observed.     

Exploring the effects of personality type on perceived satisfaction with web-based learning in continuing professional development

The purpose of this study was to determine if there is a relationship between learner personality types and perceived satisfaction when using Web-based instruction for mandatory and self-regulated continuing professional development. Two hundred and four real estate practitioners who participated in a Web-based professional development course completed the Millon Index of Personality Styles (MIPS) instrument and a survey to compare personality type and satisfaction. No relationship was found between personality types and satisfaction when using Web-based instruction. The majority (97%) of participants were satisfied with the course regardless of their personality characteristics.     

The Roles of Parental Support and Family Stress in Adolescent Sleep

The current study examines the association between parental support and adolescent sleep under varying levels of family stress. Participants included 316 adolescents (M_age = 16.40 years, 43% male) and their parents (M_age = 45.67 years, 91% mothers) from diverse ethnic backgrounds. Both adolescents and parents completed questionnaires and adolescents wore wrist actigraphs and completed self‐reports on their sleep for 7 consecutive days. Results indicated that under contexts of family stress, more parental support was linked to longer sleep duration, less sleep variability, and less time spent awake during the night. Findings suggest that under contexts of family stress, cohesive family relationships may provide a sense of stability and security that is necessary for healthful sleep.     

Maternal Support for Play and Language across Early Childhood

Patterns of development in language and play for full term and preterm children from 6 to 54 months and the effects of maternal parenting strategies (i.e., maintaining attentional focus, use of directiveness) were examined. Significant risk differences in the growth of both language and play were found. The high risk children were more likely to show delays in both these skills. Maintaining had a positive influence on children's skills, while directiveness had a largely negative influence, especially at older ages. The relation between growth in play and language was stronger for the high risk, preterm, when compared to the low risk and full term, children, but only during the infancy and toddler period. Given that play and language development is more likely to be delayed for preterm, high-risk children and the relation between the development of these skills is stronger for high risk preterm children, particularly early, it would be important to provide the parents and educators with information about play and language development. For example, communicating the need to be consistent in using some interactive behaviors (e.g., maintaining) as children develop while modifying other behaviors (e.g., directiveness) would be essential.     

Infant vocalizing and phenotypic outcomes in autism: Evidence from the first 2 years

Infant vocalizations are early-emerging communicative markers shown to be atypical in autism spectrum disorder (ASD), but few longitudinal, prospective studies exist. In this study, 23,850 infant vocalizations from infants at low (LR)- and high (HR)-risk for ASD (HR-ASD = 23, female = 3; HR-Neg = 35, female = 13; LR = 32, female = 10; 80% White; collected from 2007 to 2017 near Philadelphia) were analyzed at 6, 12, and 24 months. At 12 months, HR-ASD infants produced fewer vocalizations than HR-Neg infants. From 6 to 24 months, HR-Neg infants demonstrated steeper vocalization growth compared to HR-ASD and LR infants. Finally, among HR infants, vocalizing at 12 months was associated with language, social phenotype, and diagnosis at age 2. Infant vocalizing is an objective behavioral marker that could facilitate earlier detection of ASD.     

Boffin and geek identities: abject or privileged?

High achievement, and in particular, the role of the academically diligent and successful ‘boffin’ or ‘geek’, are notably under-researched areas in the sociology of education. Issues around gender and other aspects of identity in relation to such pupils are particularly under-researched. In this Viewpoint article we draw on evidence from our recent research projects including young people interpolated to, or identifying with, the subject position of ‘boffin/geek’ and media representations of such positions. We debate some tensions between our work, drawing out shared findings. The article considers issues around capital, experience, and the extent of exclusion/inclusion for boffins/geeks, discussing to what extent such young people can be considered marginalised and abjected or agentic and privileged. We argue that structural factors such as gender, social class, ‘race’, age, and institutional location impact on these constructions and outcomes.     

African American preschool children's physical activity levels in Head Start

The purpose of this study was to describe the physical activity levels of urban inner city preschoolers while attending Head Start, the federally funded preschool program for children from low-income families. Participants were 158 African American children. Their physical activity during Head Start days was measured using programmed RT-3 accelerometers. Results revealed that the children spent the most time in sedentary and light physical activity, while their participation in moderate-to-vigorous physical activities was low. Given the sedentary class format and limited physical space for the Head Start programs observed, we suggest adding a structured physical activity component to Head Start schools to fight the overweight and obesity crisis.     

Working with ‘Diverse Bodies,Diverse Identities’: an approach to professional education about ‘diversity’

The complexity and diversity of populations in contemporary Western societies is becoming a significant public policy issue. The concept of ‘diversity’ has come to represent cultural, ethnic, racial and religious differences between the ‘dominant group’ and immigrant and indigenous populations. ‘Diversity training’ is amongst many strategies being implemented to address social and economic objectives in complex societies. This paper discusses and critically evaluates a professional education programme, ‘Diverse Bodies, Diverse Identities’, that is offered to human service practitioners and social work students in Victoria, Australia. It is concluded that a range of approaches is needed to address ‘diversity’ in contemporary societies.