Motor development and psychological development are fundamentally related, but
researchers typically consider them separately. In this review, we present four key features …

In the first years of life, infants rapidly acquire a series of new motor skills. They learn to sit
independently, to walk with skill, and to engage in a wide variety of interactions with objects …

Face‐to‐face interaction between infants and their caregivers is a mainstay of
developmental research. However, common laboratory paradigms for studying dyadic …

New motor skills supply infants with new possibilities for action and have consequences for
development in unexpected places. For example, the transition from crawling to walking is …

Studies of dyadic interaction often examine infants' social exchanges with their caregivers in
settings that constrain their physical properties (eg, infant posture, fixed seating location for …

What incites infant locomotion? Recent research suggests that locomotor exploration is not
primarily directed toward distant people, places, or things. However, this question has not …

Long-form audio recordings have had a transformational effect on the study of infant
language acquisition by using mobile, unobtrusive devices to gather full-day, real-time data …

How do age and the acquisition of independent walking relate to changes in infants'
everyday experiences? We used a novel ecological momentary assessment (EMA) method …

Human infancy and early childhood is both a time of heightened brain plasticity and
responsivity to the environment as well as a developmental period of dependency on …

Learning to walk expands infants' access to the physical environment and prompts changes
in their communicative behaviors. However, little is known about whether walking also …