Question

1. if a split - brain patient was asked to rebuild a specific design out of blocks using just one hand, why would the patient have an easier time using his or her left hand?

because the right hemisphere dominates in recognizing shapes and sizes
because the right hemisphere dominates visual information
because the left hemisphere dominates in recognizing shapes and sizes
because the left hemisphere controls the left muscles

Explanation:

Split-brain patients have severed corpus callosums, so the two brain hemispheres function independently. The right hemisphere is specialized for spatial, visual, and shape-related tasks, and it controls the left hand (contralateral motor control). This makes the left hand more adept at the spatial task of rebuilding a block design, as the right hemisphere (linked to the left hand) handles the shape/visual processing needed for the task.

Answer:

A. because the right hemisphere dominates in recognizes shapes and sizes