The production team behind Full House did not want people to know that Michelle was played by a set of twins, so the girls were credited as "Mary-Kate Ashley Olsen" for most of the show's run (making it appear as if a single actress had the first name Mary-Kate and the middle name Ashley). Although the two were credited separately as "Mary-Kate Olsen and Ashley Olsen" during the closing credits in the series' first season (they were not officially added to the opening title sequence until season two but were credited in the syndicated versions of the season one opening titles), it was not until the eighth and final season that the twins were credited as "Mary-Kate and Ashley Olsen" in the opening titles. Despite the fact that the Olsens are fraternal twins, their physical appearances were nonetheless similar enough so that few could tell the difference between the two over the course of the show's run. In season one, Mary-Kate was used more often due to the fact Ashley cried when she was put on set for a scene.

Answer this question based on the passage: which olsen twin was in full house more? Okie... think carefully first, then make a decision:
The important part for answering this question is: The production team behind Full House did not want people to know that Michelle was played by a set of twins, so the girls were credited as "Mary-Kate Ashley Olsen" for most of the show's run (making it appear as if a single actress had the first name Mary-Kate and the middle name Ashley). So, the answer is Michelle was played by a set of twins , so the girls were credited as '' Mary - Kate Ashley Olsen '' for most of the show 's run ( making it appear as if a single actress had the first name Mary - Kate and the middle name Ashley ).