Epiphany (holiday) the calendar used, calling the feast that of the Nativity and Theophany of Our Lord. Origen's list of festivals (in "Contra Celsum", VIII, xxii) omits any reference to Epiphany. The first reference to an ecclesiastical feast of the Epiphany, in Ammianus Marcellinus (XXI:ii), is in 361. In parts of the Eastern Church, January 6 continued for some time as a composite feast that included the Nativity of Jesus: though Constantinople adopted December 25 to commemorate Jesus' birth in the fourth century, in other parts the Nativity of Jesus continued to be celebrated on January 6, a date later devoted exclusively
What Is Intelligence? What Is Intelligence? What Is Intelligence?: Beyond the Flynn Effect is a book by psychologist James R. Flynn which outlines his model for an explanation of the eponymous Flynn effect. The book summarizes much of the work of Flynn in this area, as well as that of his colleague William Dickens of the Brookings Institution. The book begins with a description of what has generally become known as "the Flynn effect": the steady rise from one generation to the next in average scores on IQ tests over time. Flynn notes that this effect apparently contradicts some fundamental beliefs about IQ