28 NHP and 21 PWA used gesture and language to describe the fold event within the gift wrapping procedure.
As predicted, PWA used fewer SMTs overall than NHP in both procedures: wheel changing procedure, t 51) = 3.07, p < 0.05, and gift wrapping procedure, t 53) = 3.38, p < 0.05.
PWA produced significantly shorter discourses, using fewer words to describe both procedures (wheel changing procedure, t 51) = 1.95, p < 0.05; gift wrapping procedure, t 53) = 2.93, p < 0.05).
They also used fewer SMTs as a percentage of overall words used: wheel changing procedure, t 51) = 2.2, p < 0.05, and gift wrapping procedure, t 56) = 2.2, p < 0.05.
This was reflected in lower PAS scores for both the wheel changing procedure t 55) = 1.89, p < 0.05, and gift wrapping procedure, t 53) = 3.34, p < 0.05.
Speakers produced discourses in response to the questions "can you tell me how you would wrap a box in paper for a present?" (gift wrapping procedure) and "can you tell me how you would change the wheel of a car?" (wheel changing procedure).
SDPgroup is an iterative procedure to augment a pre-defined training set of specificity groups with new sequences from the MSA, and SDPtree is a wrapping procedure that multiply picks a random training set for SDPgroup and constructs the best clustering pattern.
Also contrary to expectations, across both tasks, both groups produced gestures containing similar semantic information, indicated by no interaction between group and semantic content of gesture, wheel changing procedure, F 4, 2.717) = 0.775, p > 0.05, and gift wrapping procedure F 4, 2.712) = 1.489, p > 0.05.
In the gift wrapping procedure, the key event was the point where the paper is first folded over the box (fold event), and in the wheel changing procedure, the key event was the point where the new wheel is put onto the car (put event).
There was a significant interaction between group and number of arguments used for the wheel changing procedure, F(2) = 2.36, p < 0.05, and gift wrapping procedure, F(2) = 2.26, p < 0.05, indicating the two groups had different levels of syntactic complexity.
Extend the leg and rest the ankle on a chair or bench to make the wrapping procedure easier.
