The New York Times – Janet Maslin: Here come the debating points that are embedded in Ms. Donoghue’s story. Was the world inside Room somehow safer than the world outside? Will it be damaging for Jack to have to share his mother with new people in her life—or with the people she left behind? Will Ma still be content to do nothing but interact with her frisky son? Is it harder to choose freely from a whole bowl of lollipops than to have no choice at all? Room is sophisticated in outlook and execution, but it’s not too complicated to use actual lollipops to frame that theoretical question. Fortunately Ms. Donoghue makes both Ma and Jack too unpredictable for any of those answers to be easy.