Complex sentence: The social skills that are impaired by alcohol abuse include impairments in perceiving facial emotions, prosody perception problems, and theory of mind deficits; the ability to understand humor is also impaired in alcohol abusers.
Split into simpler sentences: The social skills that are impaired by alcohol abuse, include impairments in perceiving facial emotions, prosody perception problems, and theory of mind deficits. The ability to understand humor is also impaired in alcohol abusers.