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The potential impact of peer-play opportunities on the overall development of young children has been well-documented in the social development, occupational therapy, and special education literature. However, the effect of peer characteristics on the manifestation and facilitation of specific types of play roles and behaviors has received little attention. This topic is of key importance to occupational therapists who are striving to develop interventions that enhance the development of social participation and play in preschool children. The purpose of this study was to examine the differences in initiation and response exhibited by preschool-aged children with social-play delays when participating in free-play dyads with peers of differing developmental levels. A single-subject alternating treatments design was replicated across five preschool-aged children with developmental play delays. Each child was paired with one peer who had lower developmental play skills and one peer who had higher developmental play skills. The arranged dyads were given the opportunity to play together in a specially designed playroom at their school. Their interactions were videotaped and later coded. All five children generally showed more initiation and response to initiation during play with higher-level peers, although one participant showed less differentiation for initiation than the other four children. An occupational therapist working with a preschool child with play delays and wanting to facilitate the child's initiation and response in play situations should consider pairing the child with play delays with a child who has higher play skills.

Objective: The Test of Sensory Functions in Infants (TSFI) is one tool that occupational therapists use to identify sensory processing disorders among infants. However, data on the reliability of TSFI scores with infants with developmental delays are lacking., Method: Test-retest reliabilities for TSFI total test and subtest scores were determined with a sample of 26 infants with developmental delays. All infants were between 10 months and 18 months of age. The test-retest interval ranged from 5 days to 10 days. Magnitudes of difference between test and retest scores and percentages of agreement among the TSFI classification categories (i.e., normal, at-risk, deficient) also were determined to examine relationships between test scores., Results: Reliability for the total test score was borderline, with an intraclass correlation coefficient of .78. Reliability coefficients for the five subtests ranged from .54 to .74. Percentage of agreement for the total test classification categories between test and retest was adequate (81%). Percentages of agreement for subtest classification categories were low, ranging from 58% to 68%., Conclusion: TSFI scores should be interpreted cautiously and used only in conjunction with findings from additional developmental assessments and clinical observations for infants with developmental delays.