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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: J Child Psychol Psychiatry. 2011 Jul 28;53(1):64–72. doi: 10.1111/j.1469-7610.2011.02432.x

Table 4.

Correlations between mean DISC symptom counts and mean SOR symptom counts, within and across twins.

Intraclass (Cross-twin) Correlation Phenotypic (Cross-trait) Correlation Cross-twin, Cross-trait Correlation

Tactile Auditory Tactile Auditory
Symptom domains MZ DZ MZ DZ MZ DZ
Depression 0.51 0.34 0.18 0.18 0.15 0.11 0.12 0.15
Social Phobia 0.39 0.09 0.16 0.11 0.20 0.11 0.11 0.16
Specific Phobia 0.65 0.33 0.19 0.25 0.14 0.15 0.22 0.15
General Anxiety 0.43 0.24 0.21 0.21 0.10 0.18 0.14 0.17
Separation Anxiety 0.52 0.34 0.21 0.19 0.11 0.16 0.15 0.19
Conduct Disorder 0.82 0.53 0.19 0.14 0.25 0.10a 0.16 0.11
Attention Deficit Hyperactivity 0.72 0.21 0.17 0.16 0.26 0.15a 0.14 0.20
Oppositional Defiant 0.78 0.49 0.15 0.13 0.15 0.13 0.15 0.11
Tactile 0.74 0.42
Auditory 0.69 0.34

Note: p<.05 for all correlations.

a

MZ twin correlation significantly larger than DZ twin correlation