Your sleep knows you better than you realize.
We often focus on personality, interests, and talents—but have you ever truly understood your “sleep”? The nightly rhythms, depth, and stability of your rest—shape who you are.
The Sleep Phenotype Indicator (SPTI)
is a new scientific tool using insights from sleep science and personality psychology.
Through three core dimensions, it accurately analyzes your sleep and reveal your corresponding personality traits.
Your sleep phenotype consists of three dimensions:
1. Chronotype
Your natural preference for being a morning person or a night owl.
2. Sleep Duration
The amount of sleep your body personally needs to function best.
3. Sleep Sensitivity
How deeply or lightly you typically sleep, reflecting your nervous system's reactivity.
Sleep Phenotype & Personality: Research-Backed Connections
Research shows consistent links between sleep patterns and behavior. For example:
- • Dawn types tend to be planners and prefer preparing in advance
- • Stable sleepers often handle stress better and adapt more easily
- • Natural short sleepers may excel at multitasking and directing energy outward
The SPTI brings together sleep science and psychology to connect your nighttime rest with your daytime self.
