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Jeong Ah Kim, Sungwoo Park, Linda Fetters, Sandrah P. Eckel, Masayoshi Kubo, and Barbara Sargent

Exploration is considered essential to infant learning ( Adolph et al., 1993 ; Gibson & Pick, 2000 ; Sargent et al., 2014 ). Infants, through their movements, explore the people, objects, and spaces around them to learn the relation between their movement and the environment. Infants may then

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Ryota Nishiyori and Beverly D. Ulrich

early development, 2. share data from some experimental studies designed to test theories about how and why these patterns emerge, and 3. focus on the “final frontier” for studying development of infant motor control that has just begun to emerge via recent technological advances—that is, we will

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Marianne Jover, Mathilde Cellier, and Celine Scola

In developmental research, infants are usually assumed to become active partners in interactions with their caregivers soon after birth (e.g.,  Gratier et al., 2015 ). Very early on, dyadic interactions move from being simply alternating turns to being coordinated expressions in time, which

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John J. Reilly, Adrienne R. Hughes, Xanne Janssen, Kathryn R. Hesketh, Sonia Livingstone, Catherine Hill, Ruth Kipping, Catherine E. Draper, Anthony D. Okely, and Anne Martin

2018 7 Restructuring the Canadian 2017 GRADE Summary of Findings table by outcome, movement behavior, and age group (infants, toddlers, preschoolers) 23 March–13 June 2018 8 Inclusion of updated WHO systematic reviews to GRADE Summary of Findings table 29 March–13 June 2018 9 Conducting de novo

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Ivan A. Trujillo-Priego, Judy Zhou, Inge F. Werner, Weiyang Deng, and Beth A. Smith

associated with improved motor development ( Carson et al., 2017 ). Studying infant activity and movement in the daily environment is important for determining optimal practices for promoting infant health and development. Wearable sensors can be used to characterize the quantity, acceleration, and type of

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Weiyang Deng, Douglas L. Vanderbilt, and Beth A. Smith

With the development of obstetric and neonatal medicine, the mortality rate of high-risk infants has decreased ( Alexander et al., 2003 ). Hence, an increasing number of infants with different kinds of neuromuscular impairments survive. These infants are classified at or before birth as at risk for

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Janet L. Hauck, Isabella T. Felzer-Kim, and Kathryn L. Gwizdala

The persistent motor delays present in infants with Down syndrome (DS) can become constraints to safety, quality of life, and family convenience. Such delays prolong the time when an infant is physically dependent on caregivers. For instance, an infant who cannot independently roll must be

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Daniela Corbetta, Rebecca F. Wiener, Sabrina L. Thurman, and Emalie McMahon

The emergence of reaching around 3 to 5 months of age corresponds to a special moment in the infant’s life where the gaze directed toward an object is accompanied by an arm extension also directed toward that same object. This moment, when gaze and arm intersect around a common aim, marks a

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Lyndel Hewitt, Anthony D. Okely, Rebecca M. Stanley, Marjika Batterham, and Dylan P. Cliff

Physical activity is favorably associated with positive health outcomes in the early years. 1 Tummy time is a mode of physical activity performed by infants and is recommended (for those infants who are not yet mobile) by the World Health Organization for optimal motor development and to reduce

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Eszter Somogyi, Laurent Salomon, and Jacqueline Fagard

development. Signs of handedness appear prenatally, as we will see below, and handedness can be tested in infants prior to the emergence of spoken language. But signs of lateralization for language perception are also very precocious and can be detected even at birth in preterm infants ( Mahmoudzadeh et