Page 211 - Emotions through the eyes of our closest living relatives- Exploring attentional and behavioral mechanisms

Appendix D
Supplementary Materials for Chapter 6
Appendix to participants and procedure
Table S1. Overview of test subjects, their sex, age, and relationship.
Appendices
Name
Amos Baju Indah
Kawan
Kevin Sandy Samboja Wattana
Sex Birth year
Male 2000 Male 2015 Female 2017
Male 2010
Male 1982 Female 1982 Female 2005 Female 1995
Developmental stage
Adult Juvenile Infant
Adolescent (unflanged)
Adult Adult Adult Adult
Relationship
Father of Kawan, Baju, and Indah Son of Amos and Wattana
Daughter of Amos and Samboja, granddaughter of Sandy
Son of Amos and Wattana
Born in the wild, no kin in group
Mother of Samboja, grandmother of Indah Daughter of Sandy, mother of Indah Mother of Kawan and Baju
Note: Two adult females (Wattana one adult male.
and Samboja) were always housed with their offspring and sometimes with
Test sessions were carried out in mornings and afternoons (between 10:00-15:30)
in the inside enclosures (Figure 1 in Chapter 6). During testing, two observers and
occasionally a zookeeper were presen. Sometimes, volunteer guides belonging to the
park visited the orangutans during testing. Furthermore, nearing the end of the testing
period one of the individuals had fallen ill and therefore two caretakers were present
during testing almost daily. At the beginning of every session, the screen was placed
in front of one of the enclosures. An enclosure usually housed one to four individuals
(often mother-offspring and one adult male), and testing only started when the focal
individual was in a position that allowed it to see the screen. Furthermore, if a focal
individual did not see at least one full clip (yawn or control), another attempt was
made by moving the screen or waiting until the focal was in a suitable position. All
individuals in the enclosure were filmed with two cameras. If the focal individual A moved, the observers adjusted the position of the screen as well.
Yawns that occurred during the primer or while it was clear that the subject had no direct line of sight towards the screen when the stimuli were presented, were recorded as spontaneous yawns and not taken into account in subsequent analyses. Note however, that the number of spontaneous yawns was almost exactly equal between the two conditions (18 and 17 in the yawn and control condition, respectively).
209