Development of complex executive function over childhood: Longitudinal growth curve modeling of performance on the Groton Maze Learning Task.

This longitudinal study modeled children's complex executive function (EF) development using the Groton Maze Learning Task (GMLT). Using a cohort-sequential design, 147 children (61 males, 5.5-11 years) were recruited from six multicultural primary schools in Melbourne and Perth, Australia. Race/ethnicity data were not available. Children were assessed on the GMLT at 6-month intervals over 2-years between 2010 and 2012. Growth curve models describe age-related change from 5.5 to 12.5 years old. Results showed a quadratic growth trajectory on each measure of error-that is, those that reflect visuospatial memory, executive control (or the ability to apply rules for action), and complex EF. The ability to apply rules for action, while a rate-limiting factor in complex EF, develops rapidly over early-to-mid childhood.

The Relationship Between Climate Change Issue Engagement, Connection to Nature and Mental Wellbeing.

As the threat of climate change becomes increasingly prevalent for people in both the developed and developing world, the impact of climate change on mental wellbeing has become a crucial area of research. In addition to the direct, indirect, and psychosocial impacts of climate change on mental wellbeing, there is also a question of how climate change driven changes to the environment will influence the well-established positive relationship between connection to nature and mental wellbeing. The aim of this study was to investigate the relationship between climate change issue engagement, connection to nature, and mental wellbeing in English speaking adults over 18 years of age. This study examined the average levels of connection to nature and mental wellbeing in people with different levels of climate change issue engagement, and evaluated whether a person's level of climate change issue engagement uniquely predicted mental wellbeing. The study corroborated positive relationships between wellbeing and various aspects of relatedness to nature in the overall sample. The strength of these relationships, however, depended on the level of climate change issue engagement. More specifically, the level of engagement is inversely linked to mental wellbeing, such that the lower the level of engagement, generally the higher is wellbeing.

Cognitive and motor function in developmental coordination disorder.

AIM: To analyse the development of motor skill and executive function in school-aged children with and without developmental coordination disorder (DCD). METHOD: Using a longitudinal design, 186 children (86 males, 100 females) aged 6 to 11 years at Time 1 were tested over a 2-year period, 52 of whom were diagnosed with DCD at Time 1 (27 males, 25 females; mean age 8y 5mo, SD 1y 6mo) using DSM-5 criteria. The McCarron Assessment of Neuromuscular Development assessed motor status at Time 1 and at 2-year follow-up (Time 2). Executive function was assessed using a well-validated measure, the Groton Maze Learning Test. RESULTS: The DCD cohort at Time 1 had moderate incidence of executive function deficit (41%). Most importantly, at a group level, children with persisting DCD (across Times 1 and 2) also showed significantly lower levels of executive function than children with typical motor development at both time points. At an individual level, around 26% of children in this group had persisting executive function deficits relative to normal ranges of performance. INTERPRETATION: Children with persisting DCD are at significant risk of executive function issues. The combination of motor and cognitive issues as a potential risk factor in the longer-term development of children is discussed. WHAT THIS PAPER ADDS: Around half of children initially diagnosed with developmental coordination disorder (DCD) had the same diagnosis at 2-year follow-up. 41% of children with DCD have impaired executive function. Children with persisting DCD show poorer executive function than those with typical motor development or remitting DCD.

Reprint of "Deficits of hot executive function in developmental coordination disorder: Sensitivity to positive social cues".

Recent research shows that children with motor coordination problems (or developmental coordination disorder--DCD) show deficits in not only cool executive function (EF), but also hot EF. We aimed to determine whether this deficit of hot EF is due to heightened sensitivity to rewarding stimuli, specifically, or to a general deficit of cognitive control, like inhibition. Using two versions of a go/no-go task, one with neutral facial expressions and the other with happy and fearful faces, we compared 12 children with DCD with 28 typically-developing children, aged 7-12 years. Like earlier studies, children responded faster to happy faces. Both groups showed comparable accuracy in response to go targets, and also had similar commission errors, except when the no-go stimulus was a happy face. Importantly, the DCD group made significantly more commission errors to happy faces failing to suppress their response on more than half of the no-go trials. These results suggest a heightened sensitivity to emotionally significant distractors in DCD; this type of impulsivity may undermine self-regulation in DCD, with possible implications for adaptive function and emotional well-being. We argue that the interaction of cognitive control and emotion processing networks may be disrupted in DCD or delayed in development.