Studies 12- to 24-month-olds in a series of videotaped tasks assessing single object manipulation, relational play, pretend play, distractibility and persistence. Develops eight relatively subtle measures of three aspects of individual differences in infant behavior: developmental level, attention span, and exploratory diversity. (Author/NH)

Efficacy of object manipulation and picture identification to teach single words was assessed with four 23- to 40-month-old language impaired children at sensorimotor development level. Among results: two children learned more nouns and verbs in object manipulation condition. (Author)

Examined whether the density of play continues to increase as children grow older. Four- and five-year-olds made simple constructions using few materials, six- and seven-year-olds made more constructions with more materials, and eight-to ten-year-olds made fewer but much more extensive and integrated constructions. (Author/DB)

Argues that the development of object perception in infancy involves the detection of structural invariants and that such detection is best understood in the context of dynamic events. (Author/MP)

The early phase of imitation was studied in children between 6 and 18 months by means of the presentation of 22 actions. (SB)

This study examined the relationship of crossing the midline while reaching for objects to the development of bimanual reaching among infants ages 12, 18, and 26 weeks. Findings indicated that the frequency of two-hand grabbing and the number of midline reaches increased with age; most midline reaches were part of two-handed reaches and occurred…

Mental rotation studies examine how subjects determine whether two stimuli differing in orientation have the same-handedness. Handedness recognition tasks require the subject to determine whether forms are identical, differing only in degree of angular displacement. Four experiments involving 160 undergraduates demonstrate that mental…

In 3 experiments, the authors investigated the impact of action goals on the production of discrete bimanual responses. Similar to a bartender putting 2 glasses simultaneously on a shelf, participants placed 2 objects into either parallel or opposite orientations by carrying out either mirror-symmetrical or mirror-asymmetrical movements. In…

Having young readers manipulate objects to correspond to the characters and actions in a text greatly enhances comprehension as measured by both recall and inference tests. As a step toward classroom implementation, we applied this manipulation strategy in small (three-child) reading groups. For successive critical sentences, one child would read…

Because sensorimotor and environmental factors have a profound effect on children's learning, every teacher should know how to weave strategies from occupational therapy (OT) into their everyday instruction. This is the guidebook K-3 teachers need to "think like an OT"--and form effective partnerships with OTs in their schools--so all students can…

Acquisition of verbal behavior is a major goal of interventions for children with developmental disabilities. We evaluated the effectiveness of manipulation of an establishing operation for functional discriminated mands. Four individuals with developmental disabilities participated in a training procedure designed to teach two separate mands for…

Language and social interactions were examined between a father and mother and their twin children, one with Down syndrome and one developing typically. Systematic observations were made of videotaped segments and coded in real time using a computerized behavior coding program. Codes for the parents' interactions consisted of total vocalizations,…

Examines the manipulative strategies of 2- to 6-year-olds in terms of three structural principles--hierarchical complexity, interruption and role change--which are formally parallel to dimensions of language structure. Paper includes an extensive discussion of related studies. (JMB)

Children aged 2 1/2, 3, and 3 1/2 years who had demonstrated appropriate uses for a set of objects, were asked to perform these same actions with objects which varied in similarity in the reference object, or with no object present. (JMB)