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Affective Elicitation

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by

Alessandro Canossa

on 2 December 2016

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Transcript of Affective Elicitation

Thank You!
Affective Science
Characterizing emotional states is in terms of their underlying unified affective state. Valence, the degree of pleasure or displeasure, and Activation, the degree of arousal.

Conditions:
Participants:
- Interact with the 4 game scenarios
- retrospective self-assessment (using continuous circumplex and Likert scales)
- psychophysiological assessment

- Watching a video of their own play through
- rate retroactively the scenarios (select a specific emotion)
Valence = Facial EMG
Preliminary Results
- self-assessment on the AV circumplex:
complete agreement of all subjects

- retrospective self-assessment rating of video of playthrough selecting emotion:
disagreement

- EDA and Facial EMG while playing through the scenario:
very subjective - Task performance overrides physiological response (frustration, elation)
removing pants of war victim
failing to deliver flower
different apparaisal of casino

Current and Future Work
Functional Magnetic Resonance Imaging
Experimental Setup
game scenarios as active stimuli for personalized emotional responses
Affective Elicitation
Measuring AFFECT
self reports are the gold standard
physiological markers
measure in the moment--experience sampling
restrospective measures
Instigating stimuli:
International Affective Picture System
International Affective Digital Sounds

psycho-physiological constructs
vary along two principal dimensions: valence, arousal
The Basic Thory of Emotions (Ekman)
there exists a set of discrete, innate, biological, and universal emotional states



Dimensional Approach
Corrugator supercilii muscle activity -frowning
Measurements
Arousal = EDA
Electro Dermal Activity
hypotheses:
- task activity overrides affective appraisal
- task activity is overlaid on affective appraisal
Implications:
affective value of stimulus is enhanced/cancelled by interactivity
Alessandro Canossa, Lisa Barrett, Magy Seif el-Nasr, Karen Quigley, Jiahe Zhang, Eric Anderson, Jeremy Badler
!context!
Context strongly shapes how facial expressions are interpreted. In fact, context really drives what emotions we see in other people.
external surroundings in which facial actions take place
brain processes that dynamically constrain or shape how structural information is processed
Interactive scenarios allow modeling of context

To explore the utility of the CAT we designed a short game intended to elicit different affective states
(dominant scientific paradigm)
Once an emotion is triggered, the presumed result is an automated set of obligatory synchronized changes in response systems that produce the signature emotional response.

This view predicts that the experience and perception of emotions are fairly universal, so little variability within or between people would be observed.
NO PERSONALIZATION NECESSARY
The 'basic' emotion view is not well supported by the data.
- Variability is the rule rather than the exception.
- No signatures for emotions: Quantitative studies did not find signatures of emotions in the body or brain
- People from different cultures perceive emotions differently
- People within within a culture have varied emotional lives
BUT...
Evidence of affect is grounded in the physical fluctuations of the body: somatovisceral, kinesthetic, proprioceptive, and neurochemical.

People in all cultures around the world seem to have affective experiences as do animals.

Unlike emotions, affect is more clearly measured in the facial expressions, in the voice, and in the peripheral nervous system.
The CAT hypothesizes that affective experience (valence and arousal) becomes a specific emotion (fear, anger, etc.) when categorized as such using the emotion concept knowledge of a perceiver.
Conceptual Act Theory
Concepts learned from language, socialization, and experience.
Concepts created in the brain, instantaneous, ongoing, obligatory, and automatic.
No sense of agency, effort or control in constructing an emotion.
Feels like emotions just happen.
1) There is variability in how people will respond to stimuli. This can be due to participants’ past experiences, or contextual elements present in the situation that can be interpreted differently by different participants.

2) The context is critical for the experience users will have. A snake may elicit fear in one context, but amusement in another.

3) The sequence of events that lead to a specific situation is important when developing an emotional scenario.
Takeaway
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