TY - JOUR T1 - Sleep on it, but only if it is difficult: Effects of sleep on problem solving JO - Memory & Cognition PY - 2013/02/07 AU - Sio UN AU - Monaghan P AU - Ormerod T ED - DO - DOI: 10.3758/s13421-012-0256-7 PB - Springer Science and Business Media LLC VL - 41 IS - 2 SP - 159 EP - 166 Y2 - 2025/06/25 ER -