In the first substage of sensorimotor development, infants exhibit which behavior?

In the first substage of sensorimotor development, which occurs from birth to about one month, infants primarily engage in reflexive actions. During this period, their responses to stimuli are largely automatic and involuntary. Reflexes such as grasping, sucking, and rooting are essential for survival and help infants interact with their environment in a very basic way. These reflexive behaviors lay the groundwork for subsequent stages of cognitive development, where infants gradually learn to coordinate their movements and begin to explore their surroundings more intentionally.

The other behaviors listed, such as imitative actions, exploratory actions, and goal-directed actions, develop in later substages as infants gain more control over their motor skills and cognitive processes. As they grow, they transition from reflexive responses to more complex behaviors, paving the way for more advanced cognitive functions.