Two positions for research assistants are assigned to Ms. X’s professorship. Ms. Y, who holds a doctorate, works in one of these positions. Ms. Y has two children. She works part-time (75% of a full-time position). Ms. Y did not want a part-time arrangement. She was not offered full employment. The second position as a research assistant is held by Mr. Z. Mr. Z does not have a doctorate. He has just completed his studies. Mr. Z does not have any children. Mr. Z has a full-time position.