Background: Brain training products are becoming increasingly popular for children and adolescents. Despite the marketing aimed at their use in the general population, these products may provide more benefits for specific neurologically impaired populations. A review of Brain Training (BT) products analyzing their efficacy while considering the methodological limitations of supporting research is required for practical applications. Method: searches were made of the PubMed database (until March 2017) for studies including: (1) empirical data on the use of brain training for children or adolescents and any effects on near transfer (NT) and/or far transfer (FT) and/or neuroplasticity, (2) use of brain training for cognitive training purposes, (3) commercially available training applications, (4) computer-based programs for children developed since the 1990s, and (5) relevant printed and peer-reviewed material. Results: Database searches yielded a total of 16,402 references, of which 70 met the inclusion criteria for the review. We classified programs in terms of neuroplasticity, near and far transfer, and long-term effects and their applied methodology. Regarding efficacy, only 10 studies (14.2%) have been found that support neuroplasticity, and the majority of brain training platforms claimed to be based on such concepts without providing any supporting scientific data. Thirty-six studies (51.4%) have shown far transfer (7 of them are non-independent) and only 11 (15.7%) maintained far transfer at follow-up. Considering the methodology, 40 studies (68.2%) were not randomized and controlled; for those randomized, only 9 studies (12.9%) were double-blind, and only 13 studies (18.6%) included active controls in their trials. Conclusion: Overall, few independent studies have found far transfer and long-term effects. The majority of independent results found only near transfer. There is a lack of double-blind randomized trials which include an active control group as well as a passive control to properly control for contaminant variables. Based on our results, Brain Training Programs as commercially available products are not as effective as first expected or as they promise in their advertisements.

Background: Given the importance of attention and executive functions (EF) in children’s behavior, programs aimed at improving these processes are of special interest. Nexxo-training combines the use of the Nexxo touchscreen application (inhibition and vigilance tasks) with procedural metacognitive strategies (imparted by an instructor) for all the individuals using the app, regardless of their level of ability, plus compensatory strategies based on individual child performance. This study presents an analysis of the compensatory strategies that schoolchildren (aged 6–8 years old) receive when experiencing difficulties with EF tasks, in addition to an analysis of the developmental factors and cognitive skills that may modulate EF task performance. Methods: For this study, we use data from a previous randomized active-controlled study (under review), in which forty-six typically developing children aged between 6 and 8 years old (24 girls/22 boys) were enrolled in the training group. The selected children were in the 1st grade (n = 28, $\overline{x}$ = 78.32 ± 4.037 months) and 3rd grade of primary education (n = 18, $\overline{x}$ = 102.11 ± 3.445). We collected data on EF training performance, compensatory strategies needed and neuropsychological assessments. Results: A total of 80.43% participants required some form of compensatory strategy during training. Regarding required compensatory strategies, those who had lower scores in EF training needed more compensatory strategies, in particular, instructional comprehension (r = −0.561, p < 0.001 for inhibition-tasks; r = −0.342, p < 0.001 for vigilance-tasks). Concerning developmental factors, age significantly predicted better performance in both EF tasks (β = 0.613, p < 0.001 for inhibition; β = 0.706, p < 0.001 for attention). As regards task performance, those with better performance in inhibition tasks also had better performance in vigilance tasks (r = 0.72, p < 0.001). Finally, regarding cognitive skills, participants with higher performance in fluid intelligence (Q1, n = 12) had higher scores (U = 14.5, p < 0.05) than the group with the lowest performance (Q4, n = 11) in vigilance. Conclusion: As previous literature suggests, inhibition is one of the core processes of EF. Therefore, we should focus training on the core EF processes. Inhibition and vigilance are closely related processes. In terms of the use of compensatory strategies, these are more needed for participants with lower levels of performance in inhibition or vigilance. Regarding strategy analysis, instructional comprehension and self-instruction (goal setting and planning) seem to be the most useful strategies for those with difficulties in inhibitory and vigilance task performance. Regarding development, as expected, age moderates task performance in inhibition and attention. Finally, cognitive skills, such as fluid intelligence and cognitive flexibility, predicted better results in attention. EF training using not only an app, but also compensatory strategies based on user performance, is a new research direction offering more opportunities to generalize EF training in everyday life.

STap2Go is the first purely digital strategy-based method for the training of executive functions, making its evaluation relevant. This study assesses the effectiveness of this intervention in children with (at risk) and without (no-risk) psychosocial risk, which refers to socio-educational vulnerability, and examines whether its impact differs between groups. A total of 124 children (9–12 years old) were randomly assigned to either an experimental or an active control group. Individual assessments and family questionnaires were administered (FDT, WISC-V, RIST, BRIEF-2). Both groups received a 12-week intervention. The experimental group showed significant improvements in executive functions, processing speed, IQ, academic performance, and emotional and behavioral regulation compared to the controls. Notably, IQ, metacognition, and working memory continued improving at follow-up, suggesting lasting effects. While both groups benefited, the effects were more pronounced in at-risk children, particularly in BRIEF-2 (Inhibition, Metacognition, Behavioral Regulation) and academic performance in mathematics and language. Moreover, the psychosocial risk control group showed a trend toward deterioration over time. The far transfer achieved thanks to digital strategy-based training seems to have a greater effect on at-risk children, and can be used to compensate for their difficulties.

Executive functions (EFs) refer to a set of cognitive skills used to achieve goals and adapt to novelty and social situations. These cognitive skills strongly impact people’s daily lives. Hence, assessing these skills is important for an early intervention to address their lack if need be. Nevertheless, relevant scientific literature reports difficulties in assessing EFs, as they are a set of processes that involve many dimensions. Further, there are differences between everyday situations wherein EFs are employed and the context of a typical performance-based task, involving the use of EFs. Questionnaires are an excellent way to address these difficulties. The objective of this study is to test SENA’s convergent validity in terms of EFs’ assessment. The SENA is the first Spanish standardized questionnaire based on DSM-5 (2013), it assesses emotional and behavioral problems in children aged 3–18 years. This experiment involved students from regular schools ( N = 140; M age = 6.97 SD = 1.02). Statistical analysis was conducted that compared a validated EFs test (BRIEF-2) and the SENA test. The results of this study suggested the presence of convergent validity between SENA and BRIEF-2 vis-a-vis EFs. Thus, SENA is a valid assessment for EFs that are called for in school and family environments for those who speak Spanish. That said SENA is more comprehensive than BRIEF-2, as it not only assesses EFs but also identifies the problems currently associated with the failure in employing EFs, psychological vulnerabilities, and personal resources that are lacking. SENA provides a complete picture of children’s and adolescents' behaviors and emotions.

STap2Go is the first pure digital strategy-based training of executive functions. This study aims to assess the effectiveness of this intervention in typically developing children and those at psychosocial risk, which refers to socio-educational vulnerability. Additionally, we determine whether the training’s impact differs between these groups. One hundred and twenty-four children aged 9–12 participated in this study. They were divided into typically developing children or those at psychosocial risk and randomly assigned to either the experimental or active control group. Each group received a 12- week intervention. Both experimental groups improved significantly in EF, processing speed, IQ, academic performance, and emotional regulation compared to the control groups. The experimental group of children at psychosocial risk also improved in metacognition and behavioral regulation compared to controls. Overall, no significant differences were found between the experimental groups. Notably, participants in the psychosocial risk control group exhibited a certain deterioration over time.