Rethinking attention in time: Expectancy violations reconcile contradictory developmental evidence

Area of Science:

• Cognitive Psychology
• Developmental Neuroscience
• Neuroscience

Background:

• Temporal expectations significantly impact perception and action.
• Previous research on children's endogenous temporal attention yields contradictory findings regarding developmental trajectories.

Purpose of the Study:

• To reconcile conflicting evidence on children's temporal attention development.
• To investigate the role of expectancy violations (invalid trials) in temporal attention.
• To examine age-related differences in endogenous temporal orienting.

Main Methods:

• Tested three age groups: young children (4–7), older children (8–12), and adults.
• Utilized temporal cues to create expectations for target onset.
• Incorporated invalid trials (25%) where targets appeared unexpectedly.

Main Results:

• Younger children showed faster responses to valid (expected) than invalid (unexpected) trials, indicating reliance on temporal cues.
• Younger children exhibited larger validity effects compared to older children and adults.
• Validity effects positively correlated with performance on invalid trials, suggesting better adaptation with age.

Conclusions:

• Young children actively use temporal expectations for endogenous attention.
• The reduction in validity effects with age reflects improved adaptation to expectancy violations.
• Findings support a distinction between rigid and flexible temporal orienting mechanisms, developing progressively through childhood.