“He’s trying to do it!” You know I love a good “serve and return” video (in which infants and parents engage in back and forth mirroring and extension of one another’s actions). We often see this with vocalizations, but as this fantastic video from brittdipp on TT shows us, this mimicry isn’t limited to speech. Watch as this little one works to mirror his father’s spider-like hand gesture in which he walks his fingers across the table to engage his son. One of the things this video illustrates p