Effects of affordances in the home environment on children's personal-social, problem-solving, and communication skills.

BACKGROUND: Among the various factors forming the environment, most developmentalists are in agreement that the home is the primary agent for change in child growth and development. The present study investigated the effect of affordances in the home on personal-social, problem-solving, and communication skills of children between 18 and 42 months of age. This investigation extends work focusing on "motor" affordances as an environmental feature. METHODS: Using cross-sectional design, 251 families (124 boys and 127 girls) were evaluated using the Persian translation of Affordances in the Home Environment for Motor Development and the Ages and Stages Inventories to determine the three skill competencies. RESULTS: Results showed that the level of home affordances significantly impacted all three skill areas. And the total variance of predictive values in the final model had a moderate and significant ratio. Other factors such as attendance and non-attendance of children in kindergarten, family income, and education of parents were also contributing factors. CONCLUSIONS: In general, these findings indicate that the home environment plays an important role in the development of personal-social, problem-solving, and communication skills.

Associations Between the Developmental Coordination Disorder Questionnaire - Brazilian Version (DCDQ-BR) and Motor Competence in School-Age Children.

Aim: Parental screening of children's motor skills can be helpful for early identification of Developmental Coordination Disorder (DCD). The present study examined the associations between the Developmental Coordination Disorder Questionnaire - Brazilian version (DCDQ-BR) and motor competence in school-age children.Methods: 707 children (332 boys, 375 girls) aged between 6- to 10-years and one of their parents participated in the study. Parents completed the DCDQ-BR and children's motor competence was determined using the Bruininks-Oseretsky Test of Motor Proficiency - 2nd edition (BOT-2).Results: The agreement between the BOT-2 and DCDQ-BR results was comparable across age, ranging from 74-84 percent. In general, there were low- to moderate correlations between all aspects of the parent report and children's motor competence. Sensitivity and specificity of the DCDQ-BR were 70% and 81%, respectively. Overall, boys had higher motor competence than girls, but parent reports were similar for gender.Conclusions: Parental assessment of their child's motor ability is moderately associated with motor competence, and this association is similar for boys and girls, even though boys scored higher in motor competence. Our findings suggest that it may be possible to reduce the length of clinical assessment by only testing children that flag as suspect for DCD in the DCDQ-BR.

Motor development in school-age children is associated with the home environment including socioeconomic status.

The aim of the present study was to examine how the home environment, including socioeconomic status (SES), affects motor development in school-age children. Seven hundred seven children (332 boys and 375 girls) aged between 6 and 10 years participated in the study. Motor Development was determined using the Bruininks-Oseretsky Test of Motor Proficiency-Second Edition. Parents answered the Middle Childhood Home Observation Measurement of the Environment (HOME) Inventory, and Brazilian Association of Market Research Institutes Questionnaire (for SES). Children from "Adequate" homes (HOME score), compared with "Less Adequate," displayed better motor behavior. Mediation and moderation analysis revealed that motor development increased as SES increased. The proportion of variance in motor development explained by SES increased from 9% to 13% when the home was added as a mediation variable. We also found that the effect of SES on motor development was moderated by age. For older children, the effect was lower than for younger children. The best model used SES as the predictor, HOME as the mediator, and AGE as the moderator variable and explained 17% of the variance in motor development. In summary, these findings suggest that, like previous reports with young children, the HOME environment and SES may play an important role in motor development of school-age children. Our findings encourage the assessment of the home and interventions that take into account the home environment to improve motor development in school-age children.

Adaptation and Preliminary Testing of the Developmental Coordination Disorder Questionnaire (DCDQ) for Children in India.

AIMS: While Developmental Coordination Disorder (DCD) has gained worldwide attention, in India it is relatively unknown. The revised DCD Questionnaire (DCDQ'07) is one of the most utilized screening tools for DCD. The aim of this study was to translate the DCDQ'07 into the Hindi language (DCDQ-Hindi) and test its basic psychometric properties. METHODS: The DCDQ'07 was translated following guidelines for cross cultural adaptation of instruments. Parents of 1100 children (5-15 years) completed the DCDQ-Hindi, of which 955 were considered for data analysis and 60 were retested randomly after 3 weeks for test-retest reliability. RESULTS: The DCDQ-Hindi showed high internal consistency (α = .86) and moderate test-retest reliability (.73). Confirmatory factor analysis showed equivalence to the DCDQ'07. The% probable DCD using DCDQ'07 cutoff scores (≤57) ranged from 22% to 68%. Using more stringent cutoffs (≤36) it ranged from 5% to 9%. Significant difference was seen for gender (p < .05) in subset 1(gross-motor skills) total scores. CONCLUSIONS: The DCDQ-Hindi reveals promise for initial identification of Hindi speaking Indian children with DCD. Based on more stringent cut-off scores, the "probable prevalence" of children with risk of DCD in India appears to be around 6-7%. Research with larger sample and comparison with the MABC-2 or equivalent is needed.

Interlimb coordination and academic performance in elementary school children.

BACKGROUND: The specific mechanisms linking motor ability and cognitive performance, especially academic achievement, are still unclear. Whereas the literature provides an abundance of information on fine and visual-motor skill and cognitive attributes, much less has been reported on gross motor ability. This study examined interlimb coordination and its relationship to academic performance in children aged 8-11 years. METHODS: Motor and academic skills were examined in 100 Brazilian children using the Bruininks-Oseretsky Test of Motor Proficiency and the Academic Performance Test. Participants were grouped into low (<25%) and high (>75%) academic achievers. RESULTS: There was a significant difference between groups for Total Motor Composite (P < 0.001) favoring the high group. On regression analysis there was a significant association between academic performance and Body Coordination. Of the subtests of Body Coordination (Bilateral Coordination and Balance), Bilateral Coordination accounted for the highest impact on academic performance. Of interest here, that subtest consists primarily of gross motor tasks involving interlimb coordination. CONCLUSION: Overall, there was a positive relationship between motor behavior, in particular activities involving interlimb coordination, and academic performance. Application of these findings in the area of early assessment may be useful in the identification of later academic problems.

Effects of psychosocial variables in the similarity and interdependence of physical activity levels among adolescent best friend dyads.

Given that physical activity (PA) tends to decrease with age during adolescence, addressing factors that affect change is important. This study examined the similarity and interdependence of PA as influenced by psychosocial factors among adolescent best friend dyads. A total of 660 adolescents, representing 330 best friend dyads, completed questionnaires with regard to PA, sitting time, perceived exercise benefits and barriers, physical self-perception and social support for PA. Dyads were also identified as reciprocal and non-reciprocal best friends; reciprocal means that both considered each other best friends and non-reciprocal were those in which only one considered the other a best friend. Data were analysed using a hierarchical linear model framework. Results indicated significant similarities between reciprocal best friend dyads for PA and sitting time, and for sitting time in non-reciprocal best friends (P values <.01). Psychosocial variables were associated with PA in reciprocal best friend dyads and with sitting time in reciprocal and non-reciprocal best friend dyads. Best friend gender, regular sports practice of the person, perceived exercise barriers of the best friend and best friend social support were the best predictors for PA.

Examining intention in simulated actions: are children and young adults different?

Previous work with adults provides evidence that 'intention' used in processing simulated actions is similar to that used in planning and processing overt movements. The present study compared young adults and children on their ability to estimate distance reachability using a NOGO/GO paradigm in conditions of imagery only (IO) and imagery with actual execution (IE). Our initial thoughts were that whereas intention is associated with motivation and commitment to act, age-related differences could impact planning. Results indicated no difference in overall accuracy by condition within groups, and as expected adults were more accurate. These findings support an increasing body of evidence suggesting that the neurocognitive processes (in this case, intention) driving motor imagery and overt actions are similar, and as evidenced here, functioning by age 7.

Do older adults perceive postural constraints for reach estimation?

UNLABELLED: BACKGROUND/STUDY CONTEXT: Recent evidence indicates that older persons have difficulty mentally representing intended movements. Furthermore, in an estimation of reach paradigm using motor imagery, a form of mental representation, older persons significantly overestimated their ability compared with young adults. The authors tested the notion that older adults may also have difficulty perceiving the postural constraints associated with reach estimation. METHODS: The authors compared young (Mage = 22 years) and older (Mage = 67) adults on reach estimation while seated and in a more postural demanding standing and leaning forward position. The expectation was a significant postural effect with the standing condition, as evidenced by reduced overestimation. RESULTS: Whereas there was no difference between groups in the seated condition (both overestimated), older adults underestimated whereas the younger group once again overestimated in the standing condition. CONCLUSION: From one perspective, these results show that older adults do perceive postural constraints in light of their own physical capabilities. That is, that group perceived greater postural demands with the standing posture and elected to program a more conservative strategy, resulting in underestimation.

Aging in movement representations for sequential finger movements: a comparison between young-, middle-aged, and older adults.

Studies show that as we enter older adulthood (>64years), our ability to mentally represent action in the form of using motor imagery declines. Using a chronometry paradigm to compare the movement duration of imagined and executed movements, we tested young-, middle-aged, and older adults on their ability to perform sequential finger (fine-motor) movements. The task required number recognition and ordering and was presented in three levels of complexity. Results for movement duration indicated no differences between young- and middle-aged adults, however both performed faster than the older group. In regard to the association between imagined and executed actions, correlation analyses indicated that values for all groups were positive and moderate (r's .80,.76,.70). In summary, whereas the older adults were significantly slower in processing actions than their younger counterparts, the ability to mentally represent their actions was similar.

Associations of biological factors and affordances in the home with infant motor development.

BACKGROUND: Whereas considerable work has been published regarding biological factors associated with infant health, much less is known about the associations of environmental context with infant development - the focus of the present cross-sectional study. METHODS: Data were collected on 561 infants, aged newborn to 18 months. Measures included the Affordances in the Home Environment for Motor Development-Infant Scale, Alberta Infant Motor Scale, and selected bio/medical factors. Correlation and regression were used to analyze the data. RESULTS: Home environmental factors were associated with children's motor development as much as some typically high-risk biologic factors. CONCLUSION: The home environment partially explained infant development outcomes and infants at risk could possibly be helped with a home assessment for affordances.

Modulating peripersonal and extrapersonal reach space via tool use: a comparison between 6- to 12-year-olds and young adults.

This study examined age-related characteristics associated with tool use in the perception and modulation of peripersonal and extrapersonal space. Seventy-six (76) children representing age groups 7-, 9-, 11 years and 36 adults were presented with two experiments using an estimation of reach paradigm involving arm and tool conditions and a switch-block of the opposite condition. Experiment 1 tested Arm and Tool (20 cm length) estimation and found a significant effect for Age, Space, and an Age × Space interaction (ps < 0.05). Both children and adults were less accurate in extrapersonal space, indicating an overestimation bias. Interestingly, the adjustment period during the switch-block condition was immediate and similar across age. Experiment 2 was similar to Experiment 1 with the exception of using a 40-cm-length tool. Results also revealed an age effect and a difference in Space (ps < 0.05), however, participants underestimated. Speculatively, participants were less confident when presented with a longer tool, even though the adjustment period with both tool lengths was similar. Considered together, these results hint that: (1) children as young as 6 years of age are capable of being as accurate when estimating reach with a tool as they are with their arm, (2) the adjustment period associated with extending and retracting spaces is immediate rather than gradual, and (3) tool length influences estimations of reach.

The ability to mentally represent action is associated with low motor ability in children: a preliminary investigation.

BACKGROUND: Theory and anatomical research suggest that the ability to mentally represent intended actions affect level of execution. This study presents preliminary data examining the association between children's ability to mentally represent action and general motor ability. METHODS: Children aged 7- to 10 years were assessed for motor imagery ability using a simulation of reach task and motor ability via the Movement ABC-2. Motor ability values, based on percentile rank, ranged from 2 to 91, with a mean of 36. RESULTS: The overall correlation between mental representation and motor ability yielded a moderately positive relationship (r = .39). Interestingly, when looking at motor ability subcategories, only Balance was significant in the model, explaining 20% of the variance. CONCLUSIONS: These results provide preliminary evidence that children's motor ability and the ability to mentally represent action are associated in a positive direction. Furthermore, given the results for Balance, we speculate that there are clinical implications regarding work with potentially at-risk children.

Effect of visual field presentation on action planning (estimating reach) in children.

In this article, the authors examined the effects of target information presented in different visual fields (lower, upper, central) on estimates of reach via use of motor imagery in children (5-11 years old) and young adults. Results indicated an advantage for estimating reach movements for targets placed in lower visual field (LoVF), with all groups having greater difficulty in the upper visual field (UpVF) condition, especially 5- and 7-year-olds. Complementing these results was an overall age-related increase in accuracy. Based in part on the equivalence hypothesis suggesting that motor imagery and motor planning and execution are similar, the findings support previous work of executed behaviors showing that there is a LoVF bias for motor skill actions of the hand. Given that previous research hints that the UpVF may be bias for visuospatial (perceptual) qualities, research in that area and its association with visuomotor processing (LoVF) should be considered.

Visual landmarks and response delay in estimates of reach.

Visual background information may facilitate visually guided and memory guided estimates of reach, as estimates have been linked to the mental representation of action. Right-handed adults were asked to give verbal estimates of distance reachability using motor imagery in conditions with no visual background or with visual background. In each condition, four delays were used: 0, 1, 2, and 4 sec. There were no distinctions between conditions; however, comparisons at each delay were significantly different at 2 and 4 sec. With each delay, participants displayed significantly less error when the visual background was presented. These findings are consistent with the notion that motor simulation approximates motor planning and execution.

Maternal Emotional Intelligence and the Provision of Child Motor Affordances.

Background: Mothers are not only the axis of an ecological subsystem for their children but are also capable of creating a significant emotional and psychological environment through constant and direct interaction. This leads to interactions and emotional connections with the children, supportive behaviors, and a long-term commitment to their upbringing and development. Aims: This study examined the relationship between maternal emotional intelligence (EI) and demographics on the availability of motor affordances in the home environment that are conducive to their child's motor development. Methods: Mothers (N = 451) and homes of children aged 18-42 months were assessed using the Persian version of Affordances in the Home Environment for Motor Development-Self-Report (AHEMD-SR) and the Bar-On Emotional Intelligence Questionnaire. In addition, mothers' physical activity (PA) experience and demographic data were collected. Results: Analyses indicated significant correlations between mothers' education, level of PA, and income with EI and motor affordances. Conclusions: EI, PA experience, and select mother demographics were important to the availability of motor affordances in the home. One could also speculate, based on previous research, that such provision may affect the future motor development of the child. Future research should include a younger and more diverse population.

Examining age-related movement representations for sequential (fine-motor) finger movements.

Theory suggests that imagined and executed movement planning relies on internal models for action. Using a chronometry paradigm to compare the movement duration of imagined and executed movements, we tested children aged 7-11 years and adults on their ability to perform sequential finger movements. Underscoring this tactic was our desire to gain a better understanding of the age-related ability to create internal models for action requiring fine-motor movements. The task required number recognition and ordering and was presented in three levels of complexity. Results for movement duration indicated that 7-year-olds and adults were different from the other groups with no statistical distinction between 9- and 11-year-olds. Correlation analysis indicated a significant relationship between imagined and executed actions. These results are the first to document the increasing convergence between imagined and executed movements in the context of fine-motor behavior; a finding that adds to our understanding of action representation in children.

Development of the Affordances in the Home Environment for Motor Development-Infant Scale.

BACKGROUND: The present study reports the development and application of the Affordances in the Home Environment for Motor Development-Infant Scale (AHEMD-IS), a parental self-report designed to assess the quantity and quality of affordances in the home environment that are conducive to motor development for infants aged 3-18 months. METHODS: Steps in its development included use of expert feedback, establishment of construct validity, interrater and intrarater reliability, and predictive validity. With all phases of the project, 113 homes were involved. RESULTS: Intraclass correlation coefficients for interrater and intrarater reliability for the total score were 1 and 0.94, respectively. In addition, results indicate that the test has the characteristic of differentiating a wide range of scores. Regression analysis for the AHEMD-IS and motor development using the Alberta Infant Motor Scale supports preliminary evidence for predictive validity. CONCLUSION: Our findings suggest that the AHEMD-IS has sufficient reliability and validity as an instrument for assessing affordances in the home environment, with clinical and research applications.

The inability to mentally represent action may be associated with performance deficits in children with developmental coordination disorder.

Several research studies indicate that children with developmental coordination disorder (DCD) show delays with an array of perceptual-motor skills. One of the explanations, based on limited research, is that these children have problems generating and/or monitoring a mental (action) representation of intended actions, termed the "internal modeling deficit" (IMD) hypothesis. According to the hypothesis, children with DCD have significant limitations in their ability to accurately generate and utilize internal models of motor planning and control. The focus of this review is on one of the methods used to examine action representation-motor imagery, which theorists argue provides a window into the process of action representation (e.g., Jeannerod, 2001 . Neural simulation of action: A unifying mechanism for motor cognition. Neuroimage, 14, 103-109.). Included in the review are performance studies of typically developing and DCD children, and possible brain structures involved.

Interlimb coordination differentiates Brazilian children from two socioeconomic settings.

BACKGROUND: The aim of the present study was to test the notion that Brazilian children entering private school have a motor function advantage over those entering their first year in public school. METHODS: Four hundred and two children from the two cultural settings were examined for motor function in the first and 10th month of school (first grade). Participants were assessed based on age-level standards and by total score for all items for children 3 to 7 years of age. RESULTS: The private school group outperformed their public setting peers on the first and second assessment; both groups improved over the school year. The most interesting outcome was the type of motor task that most clearly differentiated the groups: activities requiring gross motor (interlimb) coordination. CONCLUSION: Among the recommendations given, it is suggested that motor skill activities, especially those involving interlimb coordination, be included with any type of motor programming for young children.

Studying action representation in children via motor imagery.

The use of motor imagery is a widely used experimental paradigm for the study of cognitive aspects of action planning and control in adults. Furthermore, there are indications that motor imagery provides a window into the process of action representation. These notions complement internal model theory suggesting that such representations allow predictions (estimates) about the mapping of the self to parameters of the external world; processes that enable successful planning and execution of action. The ability to mentally represent action is important to the development of motor control. This paper presents a critical review of motor imagery research conducted with children (typically developing and special populations) with focus on its merits and possible shortcomings in studying action representation. Included in the review are age-related findings, possible brain structures involved, experimental paradigms, and recommendations for future work. The merits of this review are associated with the apparent increasing attraction for using and studying motor imagery to understand the developmental aspects of action processing in children.