Methods: Two adults with dyslexia and 4 control adults participated in an auditory gating test using tone pairs. Latencies and Amplitudes for the N100 and P200 responses were recorded and analyzed. Participants were also administered the Abbreviated Torrance Test for Adults (ATTA), a test of creative ability designed to evaluate divergent thinking in individuals. Results were averaged and compared.
Results: The averaged difference in measured N100 amplitudes between tone 1 and tone 2 was significantly larger in the control group compared to the difference observed in the dyslexia group. In particular, one participant with dyslexia who had low scores on a task of rapid word recognition also showed no evidence of gating at the N100 component, whereas the other participant with dyslexia with good word recognition scores showed evidence of intact gating. The averaged difference in measured P200 amplitude between tone 1 and tone 2 was larger in the dyslexia group compared to the control group; however, the difference was small enough to be considered insignificant. The total average ATTA score for the control group was higher than the average of the dyslexia group. This difference in total average was less than one point on a 106-point scale.
Conclusions: Neural sensory gating occurs approximately 100 ms after the onset of a stimulus and is diminished in adults with dyslexia who also have deficits in rapid word recognition. There is a difference in creativity, in terms of divergent thinking, between those with dyslexia and those without (controls scored higher on average); however, the difference is not significant (less than one point). Dyslexia scores were more consistent than controls.
This novel study on children investigates separate constructs of child development: adjunctive behavior, curiosity, and creativity. The hypotheses were that there would be 1) a positive correlation between overall levels of adjunctive behavior and curiosity; (2) a positive correlation between appropriate adjunctive behavior, creativity, and curiosity; and (3) a negative correlation between inappropriate adjunctive behavior, creativity, and curiosity. The study took place over two visits via Zoom, split into two testing sessions. Eighteen children, ages 3.5-6.5, with ranging demographics (race, bilingualism, and exposure to another language) participated in the study. The children played an online aquarium game in the first session (50-85 minutes). They explored five different fish tanks to search for sea creatures. In the second visit (65-100 minutes), children completed thinking and drawing tasks, the Peabody Picture Vocabulary Test, and the Lifespan Self-Esteem Scale. Caregivers received a $10 online gift card for their child’s participation. The data showed no significant correlations but trends between adjunctive behavior, curiosity, and creativity. The study lacked a greater sample size, which may have caused lower correlations. For future studies, adjunctive behavior could be studied within the school setting and focus on how children can use their adjunctive behavior to maintain their creativity and curiosity.