Fig 1.
An illustration of the temporal dependency hypothesis.
Individual looks occur within trials of the habituation protocol. Individual look durations positively predict subsequent look durations. Previous trial durations predict subsequent trial durations.
Table 1.
Sample demographics.
Table 2.
Habituation trials and individual looks.
Table 3.
Model predicting look duration with five previous looks (lags).
Fig 2.
Individual look durations are predicted by previous individual look durations (A–C) and trial durations are predicted by the previous trial duration (D). Durations are displayed in seconds on a log 10 scale. A. The modeled effect of five previous look durations predicts the duration of the nth in a series of looks (see Table 3). B. The modeled effect of look count (habituation) and previous look duration predicts the duration of the nth in a series of looks (see Table 4). C. The modeled effect of look count (habituation) and the duration of the last look of a previous trial predicts the duration of the first look of the next trial (see Table 5). D. The modeled effect of trial count (habituation) and previous trial duration predict the duration of the nth in a series of trial durations (see Table 6).
Table 4.
Final model predicting individual look durations.
Table 5.
Final model predicting the first individual look of a habituation trial.
Table 6.
Final Model Predicting Trial Durations.
Fig 3.
Individual infants’ temporal dependency parameters were derived from the final multilevel model (Table 4).
A. Infants with shorter mean look length had higher levels of temporal dependency, r(125) = -.42, p <.001. B. Using a median split, short lookers exhibited stronger temporal dependency than long lookers, t(125) = 5.28, p <.001. Bars indicate standard errors of the mean.