Dataset visualization profiles for QNR respondents from both research groups DI and ND whose Dyslexia Index is 400 < Dx < 600Legend:
Profiles are presented in order of respondent Dyslexia Index, lowest first. Datapoint information for profiles and bullet charts is available on mouse-rollover, displayed as a tooltip. Profiles with a yellow background are from research group DI and those with a pink background from research group ND. For some profiles, 'This Respondent' also provided qualitative data:
This profile set is seen as important to explore as it represents both those students with dyslexia and those students with no identified dyslexia and represents the QNRs in both research groups (DI and ND) with 400 < Dx < 600.
- Profile axes represent data collected in the research QNR from the 6 Likert scales which measured these constructs. Read more about the meaning of scores on these scales here:
- Academic Behavioural Confidence (ABC)
The lower colour boundary is set at ABC=57, which is the sample mean ABC for research group DI. The upper colour boundary is set at ABC=73, which is the sample mean ABC for research group ND. The black bar is set at the median ABC=63 for the entire datapool. View the comparative normal distribution curves here: - Dyslexia Index (Dx)
Datasets in research group ND which scored Dx<400 were those used to calculate the mean values for the 6 scales represented in the profile plots for research group ND. This boundary of Dx < 400 is chosen because at 224 Dx points below the lower 99% confidence limit (Dx = 624) for research group DI, a respondent scoring Dx < 400 is very unlikely to be presenting dyslexia, at least according to the criteria established in this research project.
The colour boundary points are set at Dx=299, which is the upper 99% confidence limit for Dx in research group ND datasets where Dx<400; at Dx=624 which is the lower 99% confidence limit for research group DI; and at Dx=718 which is the upper 99% confidence limit for research group DI. Datasets in research group DI which scored Dx>600 were those used to calculate the mean values for the 6 scales represented in the profile plots for research group DI and this boundary value (Dx = 600) is chosen because at 301 Dx points above the upper 99% confidence limit (Dx = 299) for research group ND, this is representing a similar (but opposite) boundary condition criteria to that described above (RG: ND; Dx < 400). Hence datasets in research group ND which scored Dx > 600 are used to generate research group DNI - that is, respondents presenting unidentified dyslexic profiles. The black bar is set at Dx = 696, the median for research group DI.