A researcher records scores on a parenting skills assessment among parents who are married and parents who are single before and again after a family training course. He compares parenting skills scores at both times for both types of parents. What type of quasi-experimental research design is described in this example?

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.

answer; passive listening;

answer; multidisciplinary;