Manual dexterity is known to gradually progress with developmental age. In this study, we evaluate the performance of unimanual and bimanual actions under perturbed and unperturbed conditions in children between 4 and 10 years of age. Behavior was assessed by means of trajectory measurements and degree of bimanual coupling. The results showed that…

Multiple levels of category inclusiveness in 4 object domains (animals, vehicles, fruit, and furniture) were examined using a sequential touching procedure and assessed in both individual and group analyses in eighty 12-, 18-, 24-, and 30-month-olds. The roles of stimulus discriminability and child motor development, fatigue, and actions were also…

Provides data indicating that development occurs in cycles, with behavioral competencies appearing and developing and then disappearing only to reappear again in a more complex form at a later age. Data on conservation and auditory-manual coordination in infancy are used to support this theory. (ED)

This study of the oral motor behaviors of seven toddlers (age 15 months) may be interpreted to indicate that: (1) mandibular coordination follows a developmental continuum from earlier emerging behaviors, such as chewing and sucking, through babbling, to speech, or (2) unique task demands give rise to distinct mandibular coordinative constraints…

Notes that black children who find themselves too often among unwelcoming and uncaring adults and hostile institutions need all the developmental freedom they can muster to build muscle necessary for encountering the very white society in which we live. (Author/AM)

Maintains that the "getting into shape" hypothesis of explaining the inverted-U distribution of exercise play across age is likely incorrect. Argues that the biological study of human physical activity play, as recommended by Pellegrini and Smith (1998), will reveal whether physical activity play represents an example of…

The original "Bayley Scales of Infant Development" (BSID) (Bayley 1969) have been among the most popular measures of performance and aptitude of infants. In the present study the reliability and construct validity of mental and motor scores on the revised Bayley Scales of Infant Development-II (BSID-II) were investigated. A national…

Identified predictors of outcomes for 30-month-olds with developmental delays or biomedical risk factors in child care. Found that after accounting for selection effects, child characteristics at 12 months, and home caregiving quality, no child-care variables predicted development or attachment security. Older entry age predicted greater…

This monograph provides a detailed description of the child about whom and for whom the activities of the elementary school industrial arts program are directed and of the role of industrial arts in the elementary school curriculum. The first section is a detailed description of the child from age three to thirteen and includes general physical…

This study explored the inter-relationships and developmental stability of inhibitory motor control, attentional control, delay of gratification, and resistance to temptation with 32 preschool children, and related these components of self-regulation to children's behavior at home and in the classroom. The children completed the T.O.V.A.…

The author's purpose in this article is to discuss the aspects of language (especially the development of language in children) to which biological concepts are most appropriately applied. While results of past studies would seem to show that language development is contingent on specific language training, it is important to distinguish between…