A cortical cell originally responded to stimulation of the middle finger. After amputation of that finger, it begins responding to the second and fourth fingers. Which action most likely accounts for this?
a. Growth of completely new axons
b. Altered pattern of blood vessels in the brain
c. A psychotic reaction
d. Synaptic reorganization

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.