Table 1 Variables in the Human Penguin Project.

Body temperature

Oral temperature (measured twice)

Physiological information

Whether people used medication or not (and what kind)*

Whether people smoke or not (and if so, how many cigarettes)

Daily sugary drinks consumption (“gluctot”)

Diet drinks consumption (“artgluctot”)²⁷

Basic information

Birth year

Gender

Height*

Weight*

Sexual orientation*

Whether people were in a romantic relationship or not,

To what degree people identified themselves being monogamous,

Self-reported health condition

Language.

Location and whether

Minimum temperature of the day

Average humidity of the day

Distance from equator

Longitude*

Social network

Three subscales of the Social Network Index, 32 items³⁴: network size, embedded in the social network (socialembedded), complex social integration (CSI)

Established psychological scales

Trait Self Control Scale²⁸ (13 items)

Perceived Stress Scale³⁵ (14 items)

Southampton Nostalgia Scale (6 items about nostalgia and item about frequencies of nostalgia experience^22,23)

Home Attachment Scale (9 items from two sub-scales - home experience and rootness - of the place attachment scale by Harris et al. 1996³⁶)

Nomophobia questionnaire³⁷ (attach to phone, items 1–9; online id, item 10–20)

Experiences in Close Relationships Questionnaire-Revised (ECR-R)²⁹, (anxiety, items 1–18; avoidance, items 19–36)

Two subscales from the revised version of Toronto Alexithymia Scale (TAS-20)³⁰: Difficulties in Identifying and Describing Feelings (DIDF), 11 items; Externally oriented thinking (EOT) 5 items

New scales

Social Thermoregulation and Risk Avoidance Questionnaire (STRAQ-1)^{32 #}

Kama Muta Frequency Scale (KAMF)³⁸