Phase of oral contraceptive cycle and endurance capacity of rowers

Eight female rowers (M age = 21.0 yr., SD = 2.8), using a monophasic oral-contraceptive pill, performed a 1-hr. rowing ergometer test (intensity: 70% VO2max) during the active-pill and non active-pill phases of the oral contraceptive cycle. No significant differences were found in mean energy expenditure, oxygen consumption, respiratory exchange ratio, and heart rate during the endurance test at the two phases of the oral contraceptive cycle. Mean energy expenditure rate, carbohydrate energy expenditure, lipid energy expenditure, and blood lactate during the test were not statistically significantly different among the cycle phases. In conclusion, there was no observed difference in substrate oxidation and blood lactate level during endurance rowing at different phases of the oral contraceptive cycle in these endurance-trained rowers. Endurance-trained female athletes on oral contraceptives should not worry about the possible differences in substrate oxidation during everyday training at different phases of the oral contraceptive cycle.     

Gait and risk of falls associated with frontal cognitive functions at different stages of Alzheimer's disease

ABSTRACT The decline in frontal cognitive functions contributes to alterations of gait and increases the risk of falls in patients with dementia, a category which included Alzheimer's disease (AD). The objective of the present study was to compare the gait parameters and the risk of falls among patients at different stages of AD, and to relate these variables with cognitive functions. This is a cross-sectional study with 23 patients with mild and moderate AD. The Clinical Dementia Rating was used to classify the dementia severity. The kinematic parameters of gait (cadence, stride length, and stride speed) were analyzed under two conditions: (a) single task (free gait) and (b) dual task (walking and counting down). The risk of falls was evaluated using the Timed Up-and-Go test. The frontal cognitive functions were evaluated using the Frontal Assessment Battery (FAB), the Clock Drawing Test (CDT) and the Symbol Search Subtest. The patients who were at the moderate stage suffered reduced performance in their stride length and stride speed in the single task and had made more counting errors in the dual task and still had a higher fall risk. Both the mild and the moderate patients exhibited significant decreases in stride length, stride speed and cadence in the dual task. Was detected a significant correlation between CDT, FAB, and stride speed in the dual task condition. We also found a significant correlation between subtest Similarities, FAB and cadence in the dual task condition. The dual task produced changes in the kinematic parameters of gait for the mild and moderate AD patients and the gait alterations are related to frontal cognitive functions, particularly executive functions.     

EVALUATION OF ERRORLESS COMPLIANCE TRAINING IN A GENERAL EDUCATION CLASSROOM

Errorless compliance training (ECT) is a success‐based, nonaversive intervention to reduce child noncompliance that has been shown to be effective in both home and special education settings. In the current study, ECT was evaluated in a multiple‐baseline across‐subjects design with three kindergarten students who displayed noncompliant behavior in their general education classrooms. The researcher delivered a range of classroom requests to each student to determine the probability of compliance for each request. Requests were then arranged in a hierarchy, ranging from those initially yielding high compliance probabilities (level 1) to those yielding low compliance (level 4). At the beginning of treatment, students were presented with a high number of level 1 requests and provided verbal praise for compliance. Over several weeks, lower probability requests were faded in. The three students demonstrated considerable improvement in compliance levels during and following treatment. Improved compliance generalized to low‐probability requests not used in treatment. When the teacher delivered requests, results of generalization were mixed. The results provide preliminary support for the use of errorless compliance training in the general education setting. Copyright © 2014 John Wiley & Sons, Ltd.     

Highchair philosophers: the impact of seating context‐dependent exploration on children's naming biases

We examine developmental interactions between context, exploration, and word learning. Infants show an understanding of how nonsolid substances are categorized that does not reliably transfer to learning how these categories are named in laboratory tasks. We argue that what infants learn about naming nonsolid substances is contextually bound – most nonsolids that toddlers are familiar with are foods and thus, typically experienced when sitting in a highchair. We asked whether 16‐month‐old children's naming of nonsolids would improve if they were tested in that typical context. Children tested in the highchair demonstrated better understanding of how nonsolids are named. Furthermore, context‐based differences in exploration drove differences in the properties attended to in real‐time. We discuss what implications this context‐dependency has for understanding the development of an ontological distinction between solids and nonsolids. Together, these results demonstrate a developmental cascade between context, exploration, and word learning.     

The influence of family routines on the resilience of low-income preschoolers

Using data from the Birth to Three Phase (1996–2001) of the Early Head Start Research and Evaluation Project, we investigated whether family routines at 14, 24, and 36 months play a role in the development of children's self-regulation and cognitive ability at 36 months. The moderating effects of child sex and race/ethnicity were also examined. Analyses revealed that routines do matter for child outcomes; concurrent routines appear to be critical for fostering self-regulation at 36 months, whereas early routines may be important for children's later cognitive ability. Second, the effects differed by child sex, with early routines having a stronger association for girls and concurrent routines having a stronger association for boys. Associations also varied by race/ethnicity such that routines appear to matter slightly more for African–American children than European–American and Hispanic children. Implications of these findings with respect to strength-based interventions for low-income preschoolers and their families are discussed.     

Psychometric Properties of the Dyadic Parent-Child Interaction Coding System in The Netherlands

Abstract

The current study explored the psychometric properties of a parent-child interaction observation system, the Dyadic Parent-Child Interaction Coding System (DPICS) in the Netherlands. Participants included 31 Dutch mother-child dyads and 86?U.S. mother-child dyads for a community sample (2–7?years; 50% boys). Good one-week test-retest reliability was demonstrated among the Dutch sample. Similarities were found between Dutch and U.S. samples on most interaction codes, but mothers in the U.S. sample used more directive behaviors (e.g., commands) in some situations. Findings suggest that the DPICS is a reliable measure of mother-child interactions in the Dutch population. Cultural issues regarding the use of the DPICS are discussed.     

Shyness as a risk factor for second language acquisition of immigrant preschoolers

The aim of this study was to examine whether shyness is a risk factor for second language acquisition in immigrant preschoolers. Results from studies on first language acquisition indicate that shy children show less favorable language development; however, it remains unclear how shyness affects second language acquisition. As second language skills are often acquired in interactions outside the family where shyness is more evident, we postulate that shyness has a strong negative effect on second language acquisition. This hypothesis was examined using standardized tests and parental ratings in a sample of 330 immigrant preschoolers cross-sectionally and with 130 immigrant preschoolers longitudinally. The analyses revealed lower second language competence as well as slower language development in shy immigrant children compared to their non-shy counterparts. The present study highlights that not only contextual but also personality factors need to be considered for a comprehensive understanding of second language acquisition in immigrant children.     

Talking to Children About Maternal BRCA1/2 Genetic Test Results: A Qualitative Study of Parental Perceptions and Advice

Family communication is the primary, initial means of educating the next, at-risk generation about hereditary cancer risk. In this study, in-depth parent narratives provided self-report of motivations, planning, satisfactions and regrets associated with sharing or not sharing maternal BRCA1/2 test results with young children and advice for parents considering disclosure and for genetic counselors. Interviews were conducted with 32 mothers tested for BRCA1/2 with children ages 8–21 years and 24 of their co-parents; interview narratives were analyzed qualitatively. Parents were concerned with both protecting and educating children about hereditary cancer risk. They expressed confidence that parents can constructively convey genetic information to minor children. Telling relieved most parents and satisfied a sense of parental duty. Parents strongly advised child-specific, age-appropriate tailoring of genetic information and emphasized conveying the positive, preventive utility of genetic information to children. Immunizing effects of disclosure were viewed as providing forewarning about and preparation for possible later family cancer diagnoses. Parents choosing not to tell children were advised to consider future disclosure. Narratives about parental sharing of BRCA1/2 test results with minor children support the feasibility of parental discussion of maternal genetic test results to the next at-risk generation. Results suggest development of intervention tools for parents would support decision-making and family communication and potentially reduce parental worry and regret. Recommendations are made for more active involvement by genetic counselors with tested parents around the topic of delivery of genetic information to children.     

Does the Medium still Matter? The Influence of Gender and Political Connectedness on Contacting U.S. Public Officials Online and Offline

This study employs a secondary analysis of U.S. nationally representative data from the Pew Internet 2008 civic engagement survey (N?=?2251) to examine the degree to which contacting public officials both online and offline is explained by the variables of gender and political connectedness. We find that while women are somewhat less likely to contact public officials through direct means, such as emailing or writing a letter, they are more likely to sign petitions, offline and especially online. Gender gaps in direct forms of contact are smaller in the online context than the offline context. We additionally find that that gender moderates the relationship between political connectedness developed via social networking sites and contacting public officials, such that women gain even further advantage in signing online petitions, but also gain further disadvantage in writing a letter/calling public officials and signing offline petitions. Finally, we find that political connectedness, achieved via social networking sites and offline contexts, is related to contacting public officials through both online and traditional means, suggesting a blurring of offline and online worlds.     

Intact emotion-induced recognition bias in neuropsychological patients with executive control deficits

In recognition memory tasks, emotionally negative words are judged more often as "old" relative to emotionally neutral words, suggesting a shift in response bias. We wondered whether this bias shift was due to the flexible regulation of executive control during memory retrieval. To address this question, we investigated individuals with high variability in executive control functions. As expected, we observed that emotional word meaning did indeed have a strong influence on the bias toward responding "old," independent of recognition accuracy and overall response bias. However, these effects were uncorrelated with executive control, as measured by the Trail Making Test, and were fully intact, even in a sample of hospitalized neurological patients with severe executive dysfunctions, some of whom had marked damage in fronto-thalamo-striatal networks. Having concluded that the emotion-induced bias must develop on different grounds, we went on to discuss alternative explanations.