Miller’s general approach seems much like Seligman’s. His most recent book was published in 2011. In writing The Spiritual Child, Miller now, in 2015, seems to wear her professor’s publishing mantle.
Miller isn't denominational. She recognizes that many religions provide uniques names and descriptions of the higher power. She doesn’t tie spirituality to a particular religion, but does claim that it's a scientifically verifiable human capacity, and universal. Science demonstrates that children are biologically engineered for spirituality.