Concerning Measures of Self-Concept or Self-Esteem:​

Concerning measures of self-concept or self-esteem:​

A) ​scores on these instruments have steadily declined in the last decade.
B) ​there are major ethnic and racial differences on these instruments.
C) ​the reliabilities of these instruments generally fall between 0.80 to 0.90.
D) ​there is no universal agreement on the definition of the concepts nor how to measure them.