Add new term: perceived facial attractiveness of person source

[oleksiikartashovde-glitch]

Module: Source
Suggested parent class: BCIO_050981 (physical appearance attribute of person source)
Proposed label: perceived facial attractiveness of person source

Definition: A physical appearance attribute of person source that is the degree
to which the person source's face is perceived as physically attractive by the
intervention participant.

Examples: high facial symmetry, clear skin, features perceived as attractive
in the relevant cultural context.

Rationale: Perceived facial attractiveness activates the nucleus accumbens
(reward system) in the observer, producing automatic positive affect and elevated
trust attribution prior to content evaluation (Aharon et al., 2001). The effect
operates through the 'what is beautiful is good' heuristic (Dion et al., 1972)
and is cross-culturally robust for symmetry-based attractiveness (Perrett et al.,
1999). Attractive sources are perceived as more competent, trustworthy and
persuasive independent of their actual expertise. This constitutes an operationally
significant source attribute not currently captured in BCIO. Note: this issue is
contingent on acceptance of the proposed parent class "physical appearance attribute
of person source".

References:

• Aharon, I., et al. (2001). Beautiful faces have variable reward value. Neuron, 32(3), 537–551.
• Dion, K., Berscheid, E., & Walster, E. (1972). What is beautiful is good. Journal of Personality and Social Psychology, 24(3), 285–290.
• Perrett, D.I., et al. (1999). Symmetry and human facial attractiveness. Evolution and Human Behavior, 20(5), 295–307.
• Willis, J., & Todorov, A. (2006). First impressions. Psychological Science, 17(7), 592–598.

Suggested label: new term