Fig. 3
From: App icon similarity and its impact on visual search efficiency on mobile touch devices
Interactions of TDS and DDS on reaction time and on slope values as a function of set size. Small slope values indicate a search that is mostly independent of set size, i.e. is very efficient. Large slope values suggest inefficient search processes. In order to compare the results to the predictions of Duncan and Humphreys (1989), depicted in Fig. 1, the letters a to d were added to the graph on the right. All analyses were conducted on slope values based on transformed reaction time (right graph), although original values are also shown (left graph). The slope values based on the original data for low TDS condition are 13 ms/icon (low DDS) and 6 ms/icon (high DDS) and for the high TDS condition are 38 ms/icon (low DDS) and 75 ms/icon (high DDS)