Migration to Abyssinia 622 and made the hijra to Medina with Muhammad, while a second wave in came to Medina in 628, about 6 years later. The first list of emigrants reported by Ibn Ishaq included the following eleven men and four women: Migration to Abyssinia The Migration to Abyssinia (, "al-hijra ʾilā al-habaša"), also known as the First Hegira ( "hijrah"), was an episode in the early history of Islam, where Prophet Muhammad's first followers (the "Sahabah") fled from the persecution of the ruling Quraysh tribe of Mecca. They sought refuge in the Christian Kingdom of Aksum, present-day Eritrea and Ethiopia (formerly
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