Which of the following have been criticized the most for offering concepts that are vague and based on the theorists' personal opinions rather than on scientific methods?

A) behaviorists
B) humanistic theorists
C) psychodynamic theorists
D) Jungian theorists

Humanistic Theorists

Psychologists who emphasize the importance of personal growth and self-actualization in understanding human behavior.

Vague Concepts

Ideas or notions that are not clearly defined or are lacking in precision and distinctness.

Scientific Methods

A systematic approach for conducting research, which involves observation, hypothesis formation, experimentation, and conclusion to establish empirical findings.