Recall That Anthony Greenwald and His Colleagues (1991)provided Participants with Audiotapes

Recall that Anthony Greenwald and his colleagues (1991) provided participants with audiotapes that contained subliminal messages to improve memory or to raise self-esteem.After participants had listened to the tapes,the researchers assessed their memory or self-esteem.Greenwald and his colleagues found that subliminal messages

A) increased self-esteem,but did not improve memory.
B) worked to enhance memory or self-esteem only when participants thought they worked.
C) did nothing to enhance memory or increase self-esteem.
D) did nothing more than relax participants,improving their performance on memory tasks.