Effect of window size on rate of communication in a lexical prediction AAC system Export

@article{citeulike:5393232, abstract = {The study evaluated the effect of three different “window” sizes (the number of words displayed in the word selection menu) on the efficiency of communication in a lexical prediction augmentative and alternative communication (AAC) program. The results showed that a 15-word window produces significantly higher predictions and fewer keystrokes than a 5-word window. The time required to type the messages was statistically equivalent across windows. However, mean keystroke duration was significantly higher in the 15-word window as compared to the 5-word window. This study shows that (1) a saving in keystrokes does not necessarily result in an increase in the rate of communication in lexical prediction programs; (2) searching a word prediction window for target words places significant cognitive/perceptual demands on even individuals with presumably normal cognitive and perceptual abilities (and probably much more so on AAC users); and (3) a 15-word window produces roughly the same rate of communication as the 5-word window but at a significantly greater saving in effort (keystrokes/switch activations).}, author = {Venkatagiri, Horabail S.}, citeulike-article-id = {5393232}, citeulike-linkout-0 = {http://dx.doi.org/10.1080/07434619412331276810}, doi = {10.1080/07434619412331276810}, journal = {Augmentative and Alternative Communication}, keywords = {aac, at-hci, word-prediction}, number = {2}, pages = {105--112}, posted-at = {2009-08-07 17:36:43}, priority = {2}, publisher = {Informa Healthcare}, title = {Effect of window size on rate of communication in a lexical prediction AAC system}, url = {http://dx.doi.org/10.1080/07434619412331276810}, volume = {10}, year = {1994} }

TY - JOUR ID - citeulike:5393232 L3 - citeulike-article-id:5393232 N2 - The study evaluated the effect of three different “window” sizes (the number of words displayed in the word selection menu) on the efficiency of communication in a lexical prediction augmentative and alternative communication (AAC) program. The results showed that a 15-word window produces significantly higher predictions and fewer keystrokes than a 5-word window. The time required to type the messages was statistically equivalent across windows. However, mean keystroke duration was significantly higher in the 15-word window as compared to the 5-word window. This study shows that (1) a saving in keystrokes does not necessarily result in an increase in the rate of communication in lexical prediction programs; (2) searching a word prediction window for target words places significant cognitive/perceptual demands on even individuals with presumably normal cognitive and perceptual abilities (and probably much more so on AAC users); and (3) a 15-word window produces roughly the same rate of communication as the 5-word window but at a significantly greater saving in effort (keystrokes/switch activations). IS - 2 JF - Augmentative and Alternative Communication EP - 112 TI - Effect of window size on rate of communication in a lexical prediction AAC system PB - Informa Healthcare VL - 10 SP - 105 KW - aac KW - at-hci KW - word-prediction AU - Venkatagiri, Horabail PY - 1994/// UR - http://dx.doi.org/10.1080/07434619412331276810 ER -