A hypothesized hierarchy of tasks in the development of tactual discrimination (an essential skill for reading) was tested in 60 blind primary level children. For five braille and five Optacon (optical to tactile converter) sequences, Ss were asked to identify the different stimulus from the four presented. Scalogram analysis was used to examine…

Provided in the second of two articles is further evidence of the validity of the author's sequence of tactual discrimination tasks for partial development of Optacon use readiness in young blind children. (IM)