David Moreau

The case for an ecological approach to cognitive training

Strong claims have been made about the efficacy of cognitive training. In particular, the idea that working memory (WM) training enhances intelligence initially generated enthusiasm but, on further inspection, is now met with skepticism. In our view, this is an unfortunate setback due to inappropriate task design and does not refute the core idea of cognitive enhancement. Growing evidence suggests that successful training programs integrate complexity, novelty, and diversity to maximize ecological validity.

Cognitive enhancement: a comparative review of computerized and athletic training programs

Cognitive enhancement refers to any type of improvement in cognitive performance following targeted interventions. Cognitive training is a rapidly growing market with potential to further expand in the future. Several computerized software programs promoting cognitive enhancement have been developed in recent years, with controversial results and implications. Within the research field, advances have been made regarding our understanding of the benefits inherent to cognitive programs, mainly involving working memory mechanisms and videogame training paradigms. In a distinct literature, physical exercise has been shown to broadly enhance cognitive functions, in humans and animals. In this article, we bring together these two trends of research in a comparative review, leading the discussion to an emerging third approach: designed sports training. Specifically designed sports, which tax working memory and spatial ability by incorporating motion in three-dimensional space, are an optimal way to combine the benefits of traditional cognitive training and physical exercise into a single activity. We discuss these findings in the context of embodied cognition, and argue that sensorimotor learning in designed sports is a key mechanism linking training and cognitive enhancement.

An ecological approach to cognitive enhancement: Complex motor training

Cognitive training has received a lot of attention recently, yielding findings that can be conflicting and controversial. In this paper, we present a novel approach to cognitive training based on complex motor activities. In a randomized controlled design, participants were assigned to one of three conditions: aerobic exercise, working memory training or designed sport--an intervention specifically tailored to include both physical and cognitive demands. After training for eight weeks, the designed sport group showed the largest gains in all cognitive measures, illustrating the efficacy of complex motor activities to enhance cognition. Designed sport training also revealed impressive health benefits, namely decreased heart rate and blood pressure. In this period of skepticism over the efficacy of computerized cognitive training, we discuss the potential of ecological interventions targeting both cognition and physical fitness, and propose some possible applications.

Constraining movement alters the recruitment of motor processes in mental rotation

Does mental rotation depend on the readiness to act? Recent evidence indicates that the involvement of motor processes in mental rotation is experience-dependent, suggesting that different levels of expertise in sensorimotor interactions lead to different strategies to solve mental rotation problems. Specifically, experts in motor activities perceive spatial material as objects that can be acted upon, triggering covert simulation of rotations. Because action simulation depends on the readiness to act, movement restriction should therefore disrupt mental rotation performance in individuals favoring motor processes. In this experiment, wrestlers and non-athletes judged whether pairs of three-dimensional stimuli were identical or different, with their hands either constrained or unconstrained. Wrestlers showed higher performance than controls in the rotation of geometric stimuli, but this difference disappeared when their hands were constrained. However, movement restriction had similar consequences for both groups in the rotation of hands. These findings suggest that expert’s advantage in mental rotation of abstract objects is based on the readiness to act, even when physical manipulation is impossible.

Differentiating two- from three-dimensional mental rotation training effects

Block videogame training has consistently demonstrated transfer effects to mental rotation tasks, yet how variations in training influence performance with different stimuli remains unclear. In this study, participants took mental rotation assessments before and after a 3-week training programme based on 2D or 3D block videogames. Assessments varied in terms of dimensionality (2D or 3D) and stimulus type (polygon or body). Increases in videogame scores throughout training were correlated with mental rotation improvements. In particular, 2D training led to improvements in 2D tasks, whereas 3D training led to improvements in both 2D and 3D tasks. This effect did not depend on stimulus type, demonstrating that training can transfer to different stimuli of identical dimensionality. Interestingly, traditional gender differences in 3D mental rotation tasks vanished after 3D videogame training, highlighting the malleability of mental rotation ability given adequate training. These findings emphasize the influence of dimensionality in transfer effects and offer promising perspectives to reduce differences in mental rotation via designed training programmes.