Figure 6. The proportion of “one” responses given by nonsigners in Experiment 4 (with feedback suggesting an unnatural phonological association of syllables and handshape) for the syllable count task (a), morpheme count task (b), and the incongruent trials taken from both tasks (c).

To clarify the effect of learning from feedback, we indicate the expected responses, color-coded by task. Specifically, syllable count responses (in red) should depend on the number of handshapes; morpheme count (in blue) should depend on the number of movements. Error bars are confidence intervals, constructed for the difference between the means.