ABSTRACT
Children with attention-deficit/hyperactivity disorder (ADHD) present a deficit in inhibitory control. Still, it remains unclear whether it comes from a deficit in reactive inhibition (ability to stop the action in progress), proactive inhibition (ability to exert preparatory control), or both.We compared the performance of 39 children with ADHD and 42 typically developing children performing a Simon choice reaction time task. The Simon task is a conflict task that is well-adapted to dissociate proactive and reactive inhibition. Beyond classical global measures (mean reaction time, accuracy rate, and interference effect), we used more sophisticated dynamic analyses of the interference effect and accuracy rate to investigate reactive inhibition. We studied proactive inhibition through the congruency sequence effect (CSE).Our results showed that children with ADHD had impaired reactive but not proactive inhibition. Moreover, the deficit found in reactive inhibition seems to be due to both a stronger impulse capture and more difficulties in inhibiting impulsive responses. These findings contribute to a better understanding of how ADHD affects inhibitory control in children.
Subject(s)
Attention Deficit Disorder with Hyperactivity , Attention Deficit Disorder with Hyperactivity/complications , Child , Humans , Impulsive Behavior , Inhibition, Psychological , Proactive Inhibition , Reaction Time/physiologyABSTRACT
Resumen El objetivo del presente estudio fue determinar la influencia del riesgo social en el rendimiento, en tareas de Funciones Ejecutivas (FE) y Teoría de la Mente (ToM) en adolescentes colombianos. Participaron 78 adolescentes (41 en riesgo social y 37 controles) entre los 13 y 16 años de edad seleccionados a través de un muestreo intencional. Se administró el Test de Palabras y Colores de Stroop, el Test de la Pirámide de México y el Test de Falso Paso para evaluar control inhibitorio, planificación y ToM, respectivamente. A pesar de que no se encontraron diferencias significativas en las FE de control inhibitorio y planificación, se encontraron diferencias en el desempeño en algunas dimensiones de la prueba de ToM. Adicionalmente, mientras que al interior del grupo sin riesgo social se observó una relación entre la ToM y las FE evaluadas, al interior del grupo en riesgo social estos procesos no estuvieron relacionados. Se concluye que un entorno de riesgo social parece no afectar las FE de control inhibitorio y planificación o la habilidad para detectar comportamientos inapropiados, pero sí la habilidad para realizar inferencias acerca de los estados mentales de los otros. Asimismo, un entorno de riesgo social es un factor ambiental que parece disociar el proceso de desarrollo de la cognición social y de los procesos ejecutivos en adolescentes, desarrollo que debería darse de manera paralela.
Abstract The objective of the present study was to determine the influence of social risk in the performance of Colombian adolescents in ToM and EF tasks. The participants were 78 adolescents (41 in social risk and 37 controls) between 13 and 16 years of age. The Stroop Test, the Pyramid of Mexico subtest and the Faux Pas Recognition Test where used to assess inhibitory Control, Planning and ToM in the participants, respectively. Although no significant differences were found in the executive functions of Inhibiting Control and Planning, some differences were found in the performance of the ToM test. Additionally, whereas in the control group a relationship between ToM and executive functions was observed, in the at social risk group these processes were not related. These findings reveal that being at social risk does not affect the Executive Functions of Control and Planning but it does have an effect in the ability to make inferences about the mental states of others. Moreover, being at social risk can be an environmental factor that can dissociate the development process of social cognition and executive functions, which are supposed to occur parallelly.
Subject(s)
Humans , Social Vulnerability , Theory of Mind , Work PerformanceABSTRACT
La memoria de trabajo puede ser un componente de gran influencia en el rendimiento académico, aunque no es el único que lo determina. Este artículo muestra los resultados de una investigación en la que se intentó determinar la correlación que existe entre la memoria de trabajo y el rendimiento académico en estudiantes de primer semestre de diferentes programas de una universidad de Barranquilla. No se encontró correlación entre ninguna de las medidas de memoria de trabajo utilizadas y el rendimiento académico de los participantes. Estos resultados pueden ser explicados por los efectos que otras variables tienen en el rendimiento académico, como la cognición, la motivación, el afecto y el contexto.
Working memory can influence academic achievement, eventhough is not the only component. This article shows research findings that tried to determine the correlation between working memory and academic achievement in freshmen students of a university in Barranquilla. There was not correlation between any of the working memory measures used and academic achievement. These results can be explained throughout many variables that can affect academic achievement such as, cognition, motivation, emotion and context.
