Relating measures of executive functioning - The relationship between the P3NoGo event-related potential and the behavior rating inventory of executive function for adults
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- Institutt for psykologi 
The objective assessment of executive functions (EFs) as they manifest themselves in everyday life has long been a challenge for neuropsychologists. So has understanding the relationship between different EF measures. A promising approach in the assessment of executive functioning is the method of event-related potentials (ERPs). In this study we investigate whether the P3NoGo ERP from a visual cued Go/NoGo paradigm relates to the Behavioral Rating Inventory of Executive Functioning (BRIEF-A), a self-report measure of peoples everyday executive functioning. The results show that the P3NoGo amplitude correlates strongly with the Global Executive Composite (GEC) score on the BRIEF-A. Post-hoc analyses revealed that the relation to the Metacognition Index (MI), one of three BRIEF-A indexes, could mainly explain the correlation. This index is thought to represent the ability to control attention and cognitively plan, solve problems and monitor performance. We conclude that there is a significant relationship between two relatively different EF-related measures, namely P3NoGo and self-reported everyday executive functioning measured with BRIEF-A. Furthermore we suggest that an important underlying factor in this relationship is metacogntive control processes.