This study examined the developmental profile of male infants with fragile X syndrome (FXS) and its divergence from typical development and development of infants at high risk for autism associated with familial recurrence (ASIBs). Participants included 174 boys ranging in age from 5 to 28 months. Cross-sectional profiles on the Mullen Scales of…

From a neuropsychological perspective, the cognitive skills of working memory, inhibition, and attention and the maturation of the frontal lobe are requisites for successful A-not-B performance on both the looking and reaching versions of the task. This study used a longitudinal design to examine the developmental progression of infants'…

The [voice] distinction between homorganic stops and fricatives is made by a number of acoustic correlates including voicing, segment duration, and preceding vowel duration. The present work looks at [voice] from a number of multidimensional perspectives. This dissertation's focus is a corpus study of the phonetic realization of [voice] in two…

Developmental robotics has forwarded a range of models of development and behaviours. With the variety of systems that have been created, and with some of these approximating prominent human behaviours (e.g. joint attention, word learning, imitation), one may argue that developmental robotics has started to go past robotic models of earwigs…

Interesting systems, whether biological or artificial, develop. Starting from some initial conditions, they respond to environmental changes, and continuously improve their capabilities. Developmental psychologists have dedicated significant effort to studying the developmental progression of infant imitation skills, because imitation underlies…

Infants' apparent failure in gaze-following tasks is often interpreted as a sign of lack of understanding the referential nature of looking. In the present study, 8- and 12-month-old infants followed the gaze of a model to one of two locations hidden from their view by occluders. When the occluders were removed, an object was revealed either at…

Imitation studies and object search studies show that infants have difficulties using action information presented on video to guide their own behaviour. The present study investigated whether infants also have problems interpreting information shown on video relative to real live information. It was examined whether 6-month-olds interpret an…

This study explored the effects of basic developmental care on the behaviour of very pre-term infants and parental stress at 1 and 2 years of corrected age. A randomized controlled trial was done to compare basic Developmental Care (standardized nests and incubator covers) and controls (standard care). Parents of infants born less than 32 weeks of…

In Study 1, 7-month-old infants (N = 58) looked reliably more at an adult's face when she playfully pulled a toy away from them compared with when she simply handed them the toy. In Study 2, 7- and 9-month-old infants (N = 36) interacted with an adult who played a teasing game and then held a neutral or happy facial expression. Compared with a…

This paper discusses Daniel N. Stern's (1985) work, "The Interpersonal World of the Infant: A View from Psychoanalysis and Developmental Psychology," with respect to its implications for theory on infant psychosocial development. The paper focuses on two areas: the reconceptualization of psychoanalytic developmental psychology, and the…

Children with congenital blindness are delayed in understanding other people's minds. The present study examined whether this delay was related to a more primitive form of inter-subjectivity by which infants draw correspondence between parental mirroring of the infant's display and proprioceptive sensations. Twenty children with congenital…

Background: Debates about the developmental origins of adult face processing could be directly addressed if a clear infant neural marker could be identified. Previous research with infants remains open to criticism regarding the control stimuli employed. Methods: We recorded ERPs from adults and 3-month-old infants while they watched faces and…

Two studies examined the ability of a peer play scale, based on the Howes Peer Play Scale, to assess developmental sequences in children's play with peers from the infant through the preschool periods. The frequency and proportion of play forms, and the ages at which they emerged, varied as a function of the children's child care setting. (LB)

This paper presents a theoretical and empirical analysis of Piagetian and psychoanalytic theories of infancy to establish the developmental relationships between cognition and affect. Theoretical points of similarity and dissimilarity are cited. Relevant reasearch studies (Bell, Gouin-Decarie, Fraiberg) are reviewed in an attempt to resolve…