This research synthesis by Carl J. Dunst and Ellen Gorman from CELL (Center for Early Literacy Learning) examines Tactile and Object Exploration Among Young Children with Visual Impairments. By examining the results of nine studies of 82 preschool children with visual impairments, Dunst and Gorman hypothesized that certain types of exploratory behavior (touching tactile surfaces, as well as objects) indicate a level of braille readiness. It was found that more complex tactile surfaces and objects provided more feedback, and were associated with more extensive exploratory behavior.
These results offer implications for practice in providing experiences to encourage braille readiness:
Tactile experience books and tactile books with braille labels are important tools to help young children with visual impairments to develop early literacy skills and braille readiness.
http://earlyliteracylearning.org/cellreviews/cellreviews_v4_n2.pdf