In the study by Wiener et al. [20], the authors determined the differences
in sensory processing among typical full-term infants, full-term
infants with a regulatory disorder, and prematurely born infants. The
Test of Sensory Functions in Infants (TSFI) was administered to 329 infants,
aged 7 to 18 months. The infants with regulatory disorders had
problems with sleep and eating, high irritability and sever separation
anxiety. Prematurely born infants or those with a regulatory disorder
scored lower than the typical infants on the test. Thus, the results
suggest differences in sensory processing of infants with regulatory
disorders are evident when compared to children born prematurely.