A transient time window for early predispositions in newborn chicks

Area of Science:

• Developmental Psychology
• Ethology
• Comparative Cognition

Background:

• Neonates across species possess innate predispositions influencing early responses to stimuli.
• Human neonates and chicks share predispositions for attending to speed changes, faces, and biological motion.
• The temporal dynamics and genetic variability of these early predispositions are not well understood.

Purpose of the Study:

• To investigate the temporal course of early predispositions in neonates.
• To examine the preference for speed-changing motion versus linear motion in different chicken breeds.
• To determine if this predisposition is stable or changes over time and is influenced by genetic variability.

Main Methods:

• Tested object preference (speed change vs. linear motion) in three chicken breeds (Padovana, Polverara, Robusta maculata).
• Evaluated preferences at two time points: within one day after hatching and three days after hatching.
• Assessed the role of visual experience in maintaining these predispositions.

Main Results:

• A shared predisposition for attending to speed changes was observed in all tested breeds within the first day of life.
• This preference for speed changes significantly diminished by the third day after hatching.
• The results suggest the predisposition is transient and not dependent on prior visual experience.

Conclusions:

• Early predispositions in neonates can be transient, existing within a narrow developmental window.
• The observed predisposition for speed changes in chicks is innate and short-lived.
• This transient nature highlights the dynamic interplay between innate factors and development in early life.