An effective listener is defined as someone who

An effective listener is defined as someone who is attuned to nonverbal cues. Effective listening involves not only hearing the words but also understanding the speaker's body language, tone, and other nonverbal signals, which can provide significant context and understanding beyond the spoken words.

References:

Adler, R. B., Rosenfeld, L. B., & Proctor, R. F. (2018). Interplay: The Process of Interpersonal Communication (14th Edition).

Brownell, J. (2012). Listening: Attitudes, Principles, and Skills (5th Edition).