[Visual nonverbal set in preschool- and schoolchildren]

Area of Science:

• Cognitive Psychology
• Developmental Neuroscience

Background:

• Perceptual set influences how individuals process sensory information.
• Cognitive flexibility and set formation change significantly during childhood.

Purpose of the Study:

• To investigate visual set formation in preschool and school-aged children.
• To examine the relationship between set rigidity, reaction time, and age.
• To explore the role of frontal cortical development in set stability.

Main Methods:

• A visual perception task involving unequal circles was administered.
• Participants included 5-6-year-old preschoolers (n=30) and 9-10-year-old schoolchildren (n=43).
• Reaction time to a probe stimulus was measured and analyzed in relation to set stability.

Main Results:

• Younger children (5.3-6.1 years) exhibited less rigid visual sets compared to older children (9-10 years).
• Reaction time was significantly influenced by the stability and stage of the set.
• Set rigidity emerged as a significant factor in cognitive activity.

Conclusions:

• Visual set formation becomes more rigid with age, potentially linked to frontal lobe maturation.
• Cognitive flexibility, as indicated by set rigidity, plays a key role in perceptual processing and reaction time.
• These findings highlight the developmental trajectory of cognitive control and its neural underpinnings.