The researchers conclude: These findings are striking in two respects. First, though many Christians claim that God’s appearance is unknowable, our sample of believers did appear to have stable representations of God’s face that included differentiable physical features (e.g. masculinity, youthfulness, and Whiteness) and psychological characteristics (e.g. lovingness). Second, even though American Christians ostensibly believe in the same God, people perceived Him in their own way, their perceptions reflecting their political ideologies and their own personal appearance.
For the original study, go to "The faces of God in America: Revealing religious diversity across people and politics" journals.plos.org/plosone/article?id=10.1371/journal.pone.0198745