Baby Jay accidently sucked his thumb, now seems to love to suck his thumb, and has learned to do it over and over again. This best exemplifies the concept of a

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A primary circular reaction is a repetitive action that a baby performs on his or her own body or objects in the environment. This includes actions like sucking on a thumb or a toy, which bring pleasure or satisfaction to the baby. As Baby Jay seems to love to suck his thumb and has learned to do it over and over again, it best exemplifies the concept of a primary circular reaction.

Baby Jay Accidently Sucked His Thumb, Now Seems to Love