| Category,Code,Item Label,Definition (EN) | |
| Speech-related,hs1,rhythm,Rhythmic vertical movements naturally occurring during speech | |
| Speech-related,hs2,emphasis,Salient single nod aligned with vocal accent for emphasis | |
| Speech-related,hs3,completion,Single nod signaling utterance completion at turn end | |
| Speech-related,hs4,turn-yielding,Vertical nod directed toward the next speaker for turn yielding or prompting | |
| Speech-related,hs5,confirm response,Small movement with gaze maintained for reaction checking | |
| Speech-related,hs6,ask for agreement,Vertical movement at tag-question timing for implicit agreement seeking | |
| Speech-related,hs7,question,Nodding at the end of a neutral or open question | |
| Speech-related,hs8,think to speak,"Movement during speech reflecting thinking, word search, rehearsal, or self-reflection" | |
| Speech-related,hs9,unsure about speaking,Movement accompanying hesitation or lack of confidence before or during speech | |
| Speech-related,hs10,signaling,Attention-getting movement directed toward another person | |
| Speech-related,hs11,self-affirmation,Self-affirming movement reflecting confidence or internal acknowledgment | |
| Speech-related,hs12,acting,"Expressive, enacted, or gesticulatory movement within speech" | |
| Speech-related,hs13,repair,"Movement for repair, revision, negation, or supplementation of one's prior utterance" | |
| Reaction,hr1,back-channel,Vertical nod accompanying backchannel listening | |
| Reaction,hr2,response,"Response movement to another's question, prompt, or address" | |
| Reaction,hr3,ask to repeat,Repetition-request movement for previous speech | |
| Reaction,hr4,turn-taking,Nod signaling acceptance or active acquisition of the next turn | |
| Reaction,hr5,thinking,Movement while trying to understand or formulate a response | |
| Reaction,hr6,understanding,Movement indicating understanding or acceptance | |
| Reaction,hr7,uncertain,Neutral uncertainty due to unclear meaning or inability to answer | |
| Reaction,hr8,doubt,Doubtful or distrustful reaction to the speaker's utterance | |
| Reaction,hr9,surprise,Surprised reaction movement | |
| Reaction,hr10,puzzlement,Puzzled or confused reaction to the utterance | |
| Reaction,hr11,affirmation,"""Yes""-type nod including acceptance, agreement, or approval" | |
| Reaction,hr12,negation,"""No""-type movement including rejection, disagreement, or refusal" | |
| Other,hc1,positive emotion,"Positive affective display such as empathy, liking, or admiration" | |
| Other,hc2,negative emotion,"Negative affective display such as discomfort, anger, sadness, or fear" | |
| Other,hc3,inattentiveness,"Boredom, inattentiveness, mind-wandering, or post-turn relief" | |
| Other,hc4,encourage speaker,Listener movement encouraging or pressuring continuation of speech | |
| Other,hc5,synchronization,Intentional synchronization of movement timing with another person | |
| Other,hc6,prosocial,"Greeting, bowing, gratitude, apology, or acknowledgment movement" | |
| Other,hc7,laughter,Movement accompanying audible laughter | |
| Other,hc8,gaze shift,Movement accompanying gaze shifts | |
| Other,hc9,other,Habitual or idiosyncratic movement | |
| Other,hc10,unknown,"Initial state, undetermined interval, or low-confidence label" |