British Expedition to Abyssinia to his fortress at Magdala. He was engaged in constant military campaigns against a wide array of rebels. Likewise, Abyssinia was also threatened by the encroachment of Islam as Muslim Turks and Egyptians repeatedly invaded Ethiopia from the Red Sea and from Sudan while the Muslim Oromo tribe was expanding throughout Central Ethiopia. As a final attempt to recover his standing, Tewodros wrote to the major powers for help. As Donald Crummey recounts, "Now came the definitive attempt, at the turning point of the Emperor's career. Success might stabilize the internal situation; defeat would pull out the last prop. He
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