Modeling Dyadic Tactile Interactions

Exploring the Dynamics of Social Touch

TMEET is a research initiative exploring how mediated digital touch can foster perceptual and emotional engagement. It observes how two people adjust to, constrain, and respond to each other through distal tactile contact across collaboration, competition, conflict, and exchange modes.

SIMULATED DYADIC MOVEMENT STRATEGIES Collaboration

Relational modeling framework

Interaction modes are modeled in a minimalist virtual world

Each mode is designed to isolate a distinct interactional structure and is then expressed through a series of minimalist virtual games that reveal its relational dynamics.

01
Interaction / social mode

Collaboration

Game: Moving Hill

Two users must work together to achieve a shared goal. Success requires mutual cooperation and coordination.

Minimal Condition:

At least two participants who must coordinate their actions to achieve a common objective that neither can accomplish alone.

02
Interaction / social mode

Competition

Game: Sound-Guided Agent

Two users strive for the same goal, but only one can succeed. The presence of the other may hinder individual progress but does not block it.

Minimal Condition:

At least two participants pursuing the same goal where only one (or a limited number) can achieve success, creating rivalry.

03
Interaction / social mode

Conflict

Game: Moving Flag

The primary goal is to prevent the other from winning. Only one user can reach the target at a time.

Minimal Condition:

At least two participants with opposing objectives where one's success directly requires preventing the other's success.

04
Interaction / social mode

Exchange

Game: Partner Identification

Two users engage in sequential reciprocity.

Minimal Condition:

At least two participants each engage in an alternating sequence of action and response, with every contribution eliciting a contingent reply and roles reversing over time.

Research scope

Dyadic touch motion models

Our paired-motion models will use the four relational tasks described above to simulate how two people coordinate, compete, resist, and respond through mediated touch.

All four tasks take place in a shared simulated minimalist world, where each participant controls a cursor and encounters the other through mediated touch.

Research foundations

Social touch emerges through embodied, reciprocal sense-making

Grounded in enactive and embodied accounts of participatory sense-making, TMEET treats touch as an ongoing sensorimotor coordination process: meaning emerges through the reciprocal timing, resistance, and adaptation of action–perception coupling across the dyad.

01

To understand social touch, it is important to understand which interpersonal and tactile dynamics carry emotional value—and how they emerge through movement, contact, reciprocal adjustment, physiological variation, and reported experience.

Our Method

A

Observe the coupling

Track approach, contact, maintenance, rupture, resumption, synchrony, resistance, and avoidance.

B

Align the experience

Synchronize trajectories and contact episodes with Empatica measures and individual self-reports.

C

Learn a response

Recognize strategies, predict transitions, and guide tactile responses suited to the ongoing relation.

Pseudo-haptic conditions

One encounter, three control–effect relationships

Pseudo-haptics create a sense of touch or force without specialized haptic hardware, using visual, auditory, and interaction-based illusions. TMEET uses these effects to study how perceived texture, resistance, attraction, and movement can make digital contact more immersive and emotionally expressive. Bump, Hole, and Flat vary the control–effect relationship to reveal how these sensations reshape approach, contact, and coordination.

Estimating intent and effort. Pseudo-haptic gain changes the relationship between physical mouse movement and the cursor displacement shown on screen—the control–display ratio. Comparing input displacement with the visual result helps estimate motor effort and movement intent, even when the displayed motion is amplified or constrained. This discrepancy provides the AI model with an additional behavioral signal.

Resistance

Bump constrains approach

Pseudo-haptic resistance changes the control–effect relationship as participants approach or remain in contact.

Dataset and learning

From synchronized signals to an appropriate tactile response

The study synchronizes three complementary data streams—dyadic movement and contact, physiological activity, and participant reports—on one timeline. The model then learns how patterns across these signals correspond to interaction strategies and likely next responses.

01

Segment

Approach, contact, maintenance, separation, and recontact become time-bounded episodes.

02

Encode

Specialized branches describe dyadic movement, physiological change, and expressed experience.

03

Fuse

The relational mode conditions the model so the same contact can mean different things.

04

Predict

Recognize the current strategy, anticipate the partner’s response, and guide a contingent touch.

Multimodal AI pipeline

From a synchronized dyadic dataset to a context-sensitive response

Each recorded trial becomes a time-aligned example that links what the dyad did, how their bodies responded, and how the interaction was experienced.

01

Dataset inputs

Movement & touchTACTOS

Cursor trajectories, distance, contact events, and relational task

PhysiologyEMPATICA

EDA, cardiac activity, movement, and skin temperature

Participant reportsTYPEFORM

Valence, emotion, intention, and perceived control

02

Prepare features

  1. SynchronizePlace every signal on one shared timeline.
  2. SegmentIdentify approach, contact, separation, and recontact episodes.
  3. EncodeTurn each modality into learnable temporal features.
03

Relational model

Multimodal temporal fusionMovement + physiology + experience + intent/effort

Conditioned by interaction mode

CollaborationCompetitionConflictExchange
04

Model outputs

RecognizeCurrent interaction strategy
PredictLikely partner response
GenerateContext-sensitive tactile action
Training unit

One dyad × one trial × one interaction episode, with all three data streams aligned to the same timestamps.

Proposed dataset and learning architecture for TMEET A26.
A human hand moving toward a robotic hand A robotic hand moving toward a human hand

Long-term direction

Teach embodied AI to respond to a relationship—not repeat an isolated gesture.

The protocol aims to uncover regularities that help future systems interpret, predict, and generate social touch with context-sensitive emotional value.

Explore the protocol resources

Resources

Explore the TMEET A26 research

Video, publications, project writing, and the social touch model diagram will be added as the research develops.

01

VIDEO PRESENTATION

Watch the TMEET A26 research presentation

(Coming soon)
02

ACADEMIC PAPERS

Read publications and preprints

(Coming soon)
03

RESEARCH BLOG

Follow project updates and reflections

(Coming soon)
04

MODEL DIAGRAM

Inspect the social touch learning architecture

(Coming soon)