A data frame with 779 observations on the following variables. The full
dataset is described and analyzed extensively in
Jansen & Van der Maas (2002). The trichotomous data are left, balance, right.
The dichotomous version of the data is scored correct, incorrect.
sexParticipants sex.
agedaysAge in days.
ageAge in years.
t1Trichotomously scored distance item.
t2Trichotomously scored distance item.
t3Trichotomously scored distance item.
t4Trichotomously scored distance item.
d1Dichotomously scored distance item.
d2Dichotomously scored distance item.
d3Dichotomously scored distance item.
d4Dichotomously scored distance item.