Introvert / Extrovert Neuroscience Simulator

Based on DeYoung et al. (2010), Forsman et al. (2012), Smillie et al., Eysenck (1967). Faces reflect current neurological state.

Where are you on the spectrum?

introvertambivertextrovert
Your profile: slightly introverted — arousal baseline 65, RPE reactivity 0.42, sensitivity 0.72
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within tolerance
Isaac
Introvert
cortical arousal?Baseline 72. Isaac starts near the ceiling. High sensitivity (0.85) means every stimulus lands harder. Quiet lets arousal drift toward the Yerkes-Dodson sweet spot (45-65).
72
social energy100
performance cost?PFC override cost. Acting extroverted is metabolically expensive for Isaac. Crash at 80 forces mandatory recovery.
0
focus / output-
At rest. Arousal elevated but stable - the introvert's characteristic resting state.
within tolerance
You
slightly introverted
cortical arousal65
social energy100
performance cost0
focus / output-
Your profile is set by the slider. Adjust it to match how you feel in social situations.
below optimum
Elijah
Extrovert
cortical arousal?Baseline 32. Elijah starts well below the deep-work sweet spot. Stimulation-seeking is a corrective drive, not preference. Social environments efficiently raise arousal via dopamine hits.
32
social energy100
below optimum?Understimulated. Elijah's arousal is below 40. Focus is shallow and the drive to seek stimulation is strong. This is the extrovert discomfort zone.
yes
focus / output-
Understimulated. The drive toward stimulation is already active - Elijah's arousal sits below the functional floor.

Day so far

Isaac
no activity yet
You
no activity yet
Elijah
no activity yet
deep focus comms / meetings social recovery

Choose a scenario

Click to run instantly. Drag cards into the day planner below to sequence a full day.

Recovery

Recovery paths are opposite by type - removing input vs adding rewarding input.

🌿
Isaac alone
90 min solitude - arousal decays, performance cost clears
90 min
🔄
You recover
Adapts to your personality type - solitude or social
60-90 min
☕
Elijah socializes
60 min casual social - RPE returns exceed cost, scales with depletion
60 min
🤫
Elijah in silence
60 min quiet - minimal return, may drop below optimum
60 min
↺
Reset all
Return everyone to initial state
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Build your day

Drag scenarios into slots, then run the full sequence. Preset days give instant starting points.

morning

afternoon

evening

event log

ready - set your personality, pick a scenario, or build your day