Second migration to Abyssinia Second Emigration, "but that is doubtful." Sahla bint Suhayl is missing from this second list, although her biography asserts that she did indeed go to Abyssinia "in both emigrations". This list also excludes those gone for overseas preaching. Second migration to Abyssinia Following the migration and return of the most Sahabas from the first migration to Abyssinia (Sa'd ibn abi Waqqas and some did not return but left Abyssinia by sea for preaching overseas to east Asia), the Muslims continued to suffer Persecution by the Meccans. This time, in almost one hundred Muslims made a second migration back to Ethiopia
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