almost significantp = 0.052
The Negative responders’ scores fall on average at 1.5 SD above the LQ mean, and the inter-group difference is significant for both comprehension ( t 21 = 2.37, p = 0.027) and word production ( t 21 = 5.85, p < 0.001), and almost significant for sentence production ( t 21 = 2.06, p = 0.052).