Ten-month-old Dora delights in her newly found ability to turn the TV on and off by grabbing the TV's on/off button with her thumb and forefinger and pushing. This developmental change involves Dora's use of a

Question

Quizplus · Accepted Answer

Dora's ability to use her thumb and forefinger to grab and push the TV's on/off button indicates the use of a pincer grasp, which involves the coordination of the muscles in the fingers and thumb to pick up and manipulate small objects. This is a fine motor skill, not a gross motor skill which refers to the use of large muscles for movement. Lateralization, which involves the specialization of brain functions in one hemisphere or the other, is not relevant to this situation. The ulnar grasp, which involves holding objects with the fingers against the palm, is typically used by younger infants who have not yet developed the pincer grasp.

Ten-Month-Old Dora Delights in Her Newly Found Ability to Turn