Conditional Learning Deficits in Children with ADHD can be Reduced Through Reward Optimization and Response-Specific Reinforcement

Research on Child and Adolescent Psychopathology - When children with ADHD are presented with behavioral choices, they struggle more than Typically Developing [TD] children to take into account...     

Can Motivation Normalize Working Memory and Task Persistence in Children with Attention-Deficit/Hyperactivity Disorder? The Effects of Money and Computer-Gaming

Visual-spatial Working Memory (WM) is the most impaired executive function in children with Attention-Deficit/Hyperactivity Disorder (ADHD). Some suggest that deficits in executive functioning are caused by motivational deficits. However, there are no studies that investigate the effects of motivation on the visual-spatial WM of children with- and without ADHD. Studies examining this in executive functions other than WM, show inconsistent results. These inconsistencies may be related to differences in the reinforcement used. The effects of different reinforcers on WM performance were investigated in 30 children with ADHD and 31 non-ADHD controls. A visual-spatial WM task was administered in four reinforcement conditions: Feedback-only, 1 euro, 10 euros, and a computer-game version of the task. In the Feedback-only condition, children with ADHD performed worse on the WM measure than controls. Although incentives significantly improved the WM performance of children with ADHD, even the strongest incentives (10 euros and Gaming) were unable to normalize their performance. Feedback-only provided sufficient reinforcement for controls to reach optimal performance, while children with ADHD required extra reinforcement. Only children with ADHD showed a decrease in performance over time. Importantly, the strongest incentives (10 euros and Gaming) normalized persistence of performance in these children, whereas 1 euro had no such effect. Both executive and motivational deficits give rise to visual-spatial WM deficits in ADHD. Problems with task-persistence in ADHD result from motivational deficits. In ADHD-reinforcement studies and clinical practice (e.g., assessment), reinforcement intensity can be a confounding factor and should be taken into account. Gaming can be a cost-effective way to maximize performance in ADHD.     

The effects of attentional training on physiological stress recovery after induced social threat

Social stress has been related to both physiological and psychological responses. The recovery of stress is influenced by the way environmental information is processed, i.e., what information is attended to and how it is interpreted. The present study investigated the effect of attention modification training on physiological stress recovery following induced stress. A group of applicants preparing for a job interview were randomly allocated to an attention training condition versus a control condition. Afterwards, they were asked to give an artificial job interview to a real life jury while being videotaped. Participants in both conditions showed decreased heart rate variability during the job interview, which indicates an overall physiological stress response. However, during a 30-minute follow-up period after the training, indices of heart rate variability showed improved stress recovery only in the attention training condition. Attentional training is proposed as a promising strategy to prevent enduring stress reactions.     

Cognitive development in absence epilepsy during long-term follow-up

Absence epilepsy (AE) has been associated with lower than average cognitive functioning, which are clinically relevant in some and may predispose to problems later in life. This study aimed to assess cognitive development during long-term follow-up in children with AE. Thirty-one children with AE, who had undergone two neuropsychological assessments between 2010 and 2017 were analyzed retrospectively. Cognitive measurements were 1.7 ± 0.95 years apart. The difference in neurocognitive test scores was assessed on a group level and on an individual level using reliable change methodology. Results show that sustained attention was lower at the first measurement compared to the normative mean. Sustained attention improved during follow-up and 7 out of 14 children showed improvement after correction for practice effects. Receptive vocabulary showed a decline over time, but did not differ from the normative mean. Significant lower mean group scores were present for performance IQ, perceptual organization, processing speed, simple reaction times, and visual motor integration, while being stable over time in the majority of children. Cognitive development was not associated with seizure freedom. Mild-to-severe academic underachievement was present in 65% and comorbidities that might affect learning in 38%. This study in children with AE showed improvement in sustained attention during long-term follow-up while other cognitive weaknesses persisted over time, regardless of seizure freedom.     

The effects of attentional training on physiological stress recovery after induced social threat

Abstract

Social stress has been related to both physiological and psychological responses. The recovery of stress is influenced by the way environmental information is processed, i.e., what information is attended to and how it is interpreted. The present study investigated the effect of attention modification training on physiological stress recovery following induced stress. A group of applicants preparing for a job interview were randomly allocated to an attention training condition versus a control condition. Afterwards, they were asked to give an artificial job interview to a real life jury while being videotaped. Participants in both conditions showed decreased heart rate variability during the job interview, which indicates an overall physiological stress response. However, during a 30-minute follow-up period after the training, indices of heart rate variability showed improved stress recovery only in the attention training condition. Attentional training is proposed as a promising strategy to prevent enduring stress reactions.     

Is elevated risk of child maltreatment in immigrant families associated with socioeconomic status? Evidence from three sources

In this study we tested whether children from Dutch‐immigrant families are at increased risk for maltreatment, and if so, what factors could explain this risk. Three data sources from the second Netherlands Prevalence Study of Maltreatment of Youth (NPM‐2010) were used to answer these questions. First, 1127 professionals from various occupational branches (sentinels) were asked to report each child (including some background information on the child and family) for whom they suspected child maltreatment during a period of three months. Second, we included the 2010 data from the Dutch Child Protective Services and third, 1759 high school students aged 11–17 years filled out a questionnaire on their experiences of maltreatment in the past year. We found that children from traditional immigrant families with a relatively long migration history in the Netherlands (Turkish, Moroccan, Surinamese, and Antillean) and from nontraditional immigrant families (African [except Morocco], Eastern European, Central Asian, and South and Central American; often refugees) were at increased risk for child maltreatment compared to native Dutch families. However, in the professionals’ and CPS data this risk disappeared for the traditional immigrant families after correction for educational level of the parents and for step‐parenthood. Within the group of families with low education or step‐parents, the risk for child maltreatment was similar for traditional immigrant families as for native Dutch families. Nontraditional families remained at increased risk after correction for sociodemographic and family factors. In conclusion, we found that children from both traditional and nontraditional immigrant families are at increased risk for maltreatment as compared to children from native Dutch families. For the traditional immigrants this risk could partially be explained by socioeconomic status. This implies that socioeconomic factors should be taken into account when outlining policies to fight child maltreatment.     

Can voicing conflict within experiential learning groups facilitate connection? building and developing effective multi-disciplinary team-working skills

In the UK, Clinical Psychologists (CPs) work in a variety of settings within the National Health Service (NHS), often within Multi-Disciplinary Teams (MDTs). Problem-Based Learning (PBL) within CP training at the University of Hertfordshire (UH) offers unique opportunities to combine scientist-practitioner and reflective-practitioner models to learn about group dynamics from the personal experience of working within an experiential learning group.

Further, given Trainees work three days per week on placement within MDTs in the NHS, the learning gained within a ‘safer’ PBL context can be utilised within these clinical settings. For two years, Trainees at UH have to work in small PBL groups with five or six members learning to work together to achieve a goal (four assessed presentations) negotiating their own personal and professional journey, as well as a group journey. Consequently, PBL offers trainees opportunities to learn (1) how individuals work within a group; (2) how personal experiences influence this process; (3) how others influence them and are influenced by them; and (4) how a group of diverse individuals conceptualise, understand and convey case vignettes to an audience. Within these groups, many Trainees learn to speak out, reflect, listen attentively, empathise, validate and accept diverse experiences. Further, when differences dominate they often learn to negotiate these, finding a way to maintain effective team working in order to complete the presentation. Focusing on the conflict that can occur within (any) group, this paper explores themes from the reflective narratives of six trainees: parallels and differences between MDTs and PBL groups, striving for and achieving authenticity; and conflict as a ‘swear’ word. We conclude that exploring the role PBL can play in training individuals to work effectively in teams may be of benefit within the training of other professional groups.     

Detecting distortions of peripherally presented letter stimuli under crowded conditions

When visual features in the periphery are close together they become difficult to recognize: something is present but it is unclear what. This is called “crowding”. Here we investigated sensitivity to features in highly familiar shapes (letters) by applying spatial distortions. In Experiment 1, observers detected which of four peripherally presented (8 deg of retinal eccentricity) target letters was distorted (spatial 4AFC). The letters were presented either isolated or surrounded by four undistorted flanking letters, and distorted with one of two types of distortion at a range of distortion frequencies and amplitudes. The bandpass noise distortion (“BPN”) technique causes spatial distortions in Cartesian space, whereas radial frequency distortion (“RF”) causes shifts in polar coordinates. Detecting distortions in target letters was more difficult in the presence of flanking letters, consistent with the effect of crowding. The BPN distortion type showed evidence of tuning, with sensitivity to distortions peaking at approximately 6.5 c/deg for unflanked letters. The presence of flanking letters causes this peak to rise to approximately 8.5 c/deg. In contrast to the tuning observed for BPN distortions, RF distortion sensitivity increased as the radial frequency of distortion increased. In a series of follow-up experiments, we found that sensitivity to distortions is reduced when flanking letters were also distorted, that this held when observers were required to report which target letter was undistorted, and that this held when flanker distortions were always detectable. The perception of geometric distortions in letter stimuli is impaired by visual crowding.     

Problem Space Matters: The Development of Creativity and Intelligence in Primary School Children

Previous research showed that in primary school, children’s intelligence develops continually, but creativity develops more irregularly. In this study, the development of intelligence, measured traditionally, i.e., operating within well-defined problem spaces (Standard Progressive Matrices) was compared with the development of intelligence operating in ill-defined problem spaces (Creative Reasoning Task) and the development of creativity (Test of Creative Thinking-Drawing Production), in primary school children (N = 175) across four grade levels. Results showed that problem space matters: Traditional intelligence test scores increased regularly with grade level, whereas creativity, as well as intelligence operating in an ill-defined problem space, developed irregularly but similarly. This suggests that when creativity is fostered, intelligence’s ability to operate in ill-defined problem space may be fostered, likewise.