Answer:
Irish dialect.
Step-by-step explanation:
In Frank O'Connor's "First Confession", the story revolves around the 7 year old boy Jackie's life. The short story dwells on the importance of doing penance and making confessions in the lives of the characters in the city of Ireland.
The story dwells on the importance that the Irish people give to their confessions and penance in the church as a way of dissolving their sins. But with the trivial things even thought to be major, the story is also a sort of satirical take on the Irish community's belief system. And with the inclusion of Irish dialects throughout the whole story, the author adds to the way the story captures our attention.