The main adverse effect of electroconvulsive shock therapy is

A) temporary speech difficulties.
B) psychotic phases.
C) depression.
D) memory impairment.
E) mania.

The main adverse effect of electroconvulsive shock therapy is memory impairment. This can include difficulty recalling past events, as well as difficulty forming new memories after the procedure. However, these effects are usually temporary and tend to improve over time. Other side effects of electroconvulsive shock therapy may include headache, nausea, and confusion, but these are generally less severe and less common than memory impairment.