His research span several topics including occulomotor development, social cognition, and object representations with a main focus on eye tracking. In addition to empirical work based on eye tracking (published in journals such as Nature Neuroscience, Child Development, Cognition, Developmental Psychology, and Developmental Science) he recently published a methods paper devoted to eye tracking in infant populations (Gredebäck, Johnson, & von Hofsten, 2010) and is currently engaged in exploring how pupil dilations are mediated by surprise in social contexts. His research experience also includes EEG and NIRS (near infra-red spectroscopy) and current attempts are being made to connect these measures of neural activity with pupillary responses.