Teaching a new concept through gestures--hand movements that accompany speech--facilitates learning above-and-beyond instruction through speech alone (e.g., Singer & Goldin-Meadow, 2005). However, the mechanisms underlying this phenomenon are still under investigation. Here, we use eye tracking to explore one often proposed…

Combining information across different sensory modalities is of critical importance for the animal's survival and a core feature of human's everyday life. In adulthood, sensory information is often integrated in a statistically optimal fashion, so that the combined estimates of two or more senses are more reliable than the best single one. Several…