The visual sequence in Baillargeon's experiment, designed to test infant object knowledge, involves three stages depicted in images. Initially, a toy truck is shown moving freely on a track (Image A). Next, a box is placed in the background, near the track (Image B). Finally, in the 'impossible event,' the truck is shown appearing to pass directly through the box, which has been moved to obstruct the track (Image C).

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In a key study demonstrating early object knowledge, researcher Renée Baillargeon presented 3-month-old infants with an 'impossible event' where a toy truck appeared to roll unimpeded through a solid box blocking its path. The infants gazed significantly longer at this impossible scenario compared to a possible one, leading researchers to conclude that the infants understood solid objects cannot pass through each other, even without prior physical experience.

Baillargeon's Impossible Event Experiment

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

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