Which issue cannot currently be treated either surgically or through the use of corrective lenses?

In order to help her music students learn the lines of the treble clef in musical notation, Susan has them learn the sentence "Every Good Boy Does Fine," in which the starting letter of each word represents the name of a note. This is an example of ______

a. maintenance rehearsal. b. a mnemonic. c. the serial-position effect. d. pattern recognition.

Which one of the following factors generally indicates a favorable prognosis for

recovery from schizophrenia? a. sudden onset of symptoms b. no symptoms of anxiety or depression c. early age of onset of symptoms d. no specific triggering event