The present research examined the effects of message selection techniques and array sizes on short-term visual memory. Specifically, this study investigated whether there are short-term visual memory differences between direct selection and the row-column scanning in normally developing 4-year-old children. Results suggested a significant difference in favor of direct selection over scanning for the array with 40 symbols. The other purpose of this investigation was to determine whether differences existed as a function of the number of symbols available on the communication aid. The effect of array size upon memory did reveal a significant difference between the array with 30 symbols and the array with 40 symbols.
Bibliographical noteFunding Information:
Portions of this paper were presented at the 1990 Convention of the American Speech-Language-Hearing Association in Seattle, Washington. The authors wish to thank the Edwin Eddy Foundation for its financial assistance in supporting this research. We are also grateful to the Prentke Romich Company for their loan of the Prentke Romich Express 3 equipment.
- augmentative communication
- direct selection
- row-column scanning
- symbol sets