Table 1.
Mean values (SDs) and statistical test results for BMI, age, gender, and manipulation check
| Variables | High intake norm | Low intake norm | No norm | Control | Test statistic and p-value |
|---|---|---|---|---|---|
| (n = 36) | (n = 37) | (n = 35) | (n = 35) | ||
| BMI (z-score) | .30 | .35 | .42 | .10 | F(3,139) = .77, p = .51 |
| (1.10) | (.81) | (.96) | (.87) | ||
| Age (years) | 9.07 | 9.20 | 9.01 | 8.85 | F(3,139) = .45, p = .72 |
| (1.35) | (1.14) | (1.21) | (1.50) | ||
| Gender | |||||
| Boys (n) | 17 | 20 | 18 | 15 | X 2(3, n = 143) = 1.04, p = .79 |
| Girls (n) | 19 | 17 | 17 | 20 | |
| Belief about amount of carrots eaten by other children (manipulation check) a | 2.7 | 1.6 | 2.0 | 2.0 | F(3,139) = 45.1, p < .001 |
| (.48) | (.55) | (.24) | (.24) |
aChildren selected one of three options regarding their beliefs about the amount of carrots eaten by other children: almost all, some, or none. A higher mean corresponds to a belief that other children had eaten a large amount of carrots