I think I really dislike the dialog choice mechanic when taking in new personas. It's just so often completely arbitrary that it becomes frustrating.
100% success rate if you read the tutorial that the game doesn't give you.
Upbeat - jokes, no serious/vague
Timid - kind, no jokes/vague
Irritable - serious, no kind/vague
Gloomy - vague, no serious/jokes
Timid - kind, no jokes/vague
Irritable - serious, no kind/vague
Gloomy - vague, no serious/jokes