<P> Due to research development in recent years , backchannel responses have been expanded to include sentence completions , requests for clarification , brief statements , and non-verbal responses and now fall into three categories : non-lexical , phrasal , and substantive . A non-lexical backchannel is a vocalized sound that has little or no referential meaning but still verbalizes the listener 's attention . In English , sounds like `` uh - huh '' and `` hmm '' serve this role . Phrasal backchannels most commonly assess or acknowledge a speaker 's communication with simple words or phrases ( for example , `` Really ? '' or `` Wow ! '' in English ) . Substantive backchannels consist of more substantial turn - taking by the listener and usually manifest as asking for clarification or repetitions . </P>
<P> Due to research development in recent years , backchannel responses have been expanded to include sentence completions , requests for clarification , brief statements , and non-verbal responses and now fall into three categories : non-lexical , phrasal , and substantive . A non-lexical backchannel is a vocalized sound that has little or no referential meaning but still verbalizes the listener 's attention . In English , sounds like `` uh - huh '' and `` hmm '' serve this role . Phrasal backchannels most commonly assess or acknowledge a speaker 's communication with simple words or phrases ( for example , `` Really ? '' or `` Wow ! '' in English ) . Substantive backchannels consist of more substantial turn - taking by the listener and usually manifest as asking for clarification or repetitions . </P>
backchanneling cues such as yes and uh-huh come under which stage of listening
backchanneling cues such as yes and uh-huh come under which stage of listening
non-lexical
non-lexical