A Comparison of Picture Exchange and Speech-Generating Devices: Acquisition, Preference, and Effects on Social Interaction

Figures & data

Figure 1. Number of instances of behavior indication and correct requesting (upper panel) and the duration (in seconds) of social withdrawal (lower panel) during the baseline and the posttraining phases of Study 1.

TABLE 1 Number (%) of times Trevor selected PE versus SGD; and the left (versus right) or near (versus far) device.

	Device			Orientation			Distance
	PE	SGD	Total	Left	Right	Total	Near	Far	Total
n	35	27	62	15	1	16	10	6	6
%	56%	44%	100%	94%	6%	100%	63%	37%	100%

Figure 2. Number of correct PE-based requests (upper panel) and the duration of social withdrawal (lower panel) during baseline and for each session of the various distances that were used in Study 3.