Attachment representations have traditionally been considered a stable trait, although evidence is found that attachment varies over time and situations conditional upon exposure to life-events and diverse contextual factors. This suggests that attachment consists of both trait and state like components. The current study aimed to evaluate if experiences with maternal support modulate children's state trust in mother's availability. For this purpose, we set up an experimental procedure. First, children watched a negative mood inducing video to activate negative emotions. In the following experimental phase, mothers were randomly assigned to one of three conditions. In condition one, mothers were instructed to provide secure base support to the distressed child. In the second condition, mother