Step 1: Understanding emotional intelligence.
Emotional intelligence refers to the ability to identify, understand, manage, and use emotions effectively in oneself and others. Psychologists like David Mayer, Robert R. Baron, and others have contributed to this field.
Step 2: Analyzing the options.
- (A) Incorrect, David Mayer is one of the pioneers in the development of emotional intelligence theory.
- (B) Correct, Sigmund Freud is known for his work on psychoanalysis, and his contributions do not directly relate to emotional intelligence.
- (C) Correct, William James is considered a founder of psychology but his work primarily focuses on behavior and consciousness, not emotional intelligence.
- (D) Correct, Robert R. Baron has worked extensively on emotional intelligence, including its development and application.
Step 3: Conclusion.
Thus, the correct answers are (B), (C), and (D).