TABLE 2.
Phenotypic and CT/CT ICCs for V and FF, and F and FF1
| CT/CT ICCs (95% CIs)4 |
||||
| Scales | Phenotypic correlations2 | Twin and scale3 | Monozygotic | Dizygotic |
| Vegetable liking × FF | −0.61 | Twin 1 V × twin 2 FF | −0.58 (−0.64, −0.52) | −0.29 (−0.35, −0.23) |
| Twin 2 V × twin 1 FF | −0.58 (−0.64, −0.52) | −0.32 (−0.38, −0.26) | ||
| Fruit liking × FF | −0.42 | Twin 1 F × twin 2 FF | −0.45 (−0.53, −0.38) | −0.20 (−0.26, −0.13) |
| Twin 2 F × twin 1 FF | −0.42 (−0.50, −0.34) | −0.19 (−0.26, −0.13) | ||
1
CT/CT, cross-twin, cross-trait; F, fruit liking; FF, food fussiness; ICC, intraclass correlation; V, vegetable liking.
2
Pearson’s product-moment correlation coefficients; n = 2523–2660. All correlations were significant at the 0.01 level (2 tailed).
3
Randomly allocated twin (1 or 2) and the scale used in the CT/CT correlation. CT/CT ICCs were calculated for monozygotic and dizygotic pairs for the residualized vegetable and fruit liking scores paired with residualized FF scores.
4
Monozygotics: n = 438–458 pairs; dizygotics: n = 855–872 pairs.