Second migration to Abyssinia of Ethiopia. Ibn Ishaq reports a dispute over this list: people believed either Abu Sabra or Abu Hatib was involved in this emigration, but not both of them. According to Ibn Ishaq, there were 101 adults (83 men and 18 women) who embarked on the second migration to Abyssinia. However, the names he actually lists amount to 104 persons. His list does not include children who accompanied their parents, although he does list ten of the children who were born to the Muslims in Abyssinia. Ibn Ishaq adds that some people believed Ammar ibn Yasir was also included in the
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