00381nam a22001097a 4500020002300000082001700023100001500040245004800055260002600103300003100129650011100160  a9780241184837 (hb)  a658.575bEYA  aEyal, Nir   aHooked: How to Build Habit-Forming Products  aCanadabPenguinc2019  ax, 246p.b; ill.,c: 21cm.  aProduct designvBehavioral designvConsumer psychologyvHook ModelvVariable rewardsvUser investmentvFMS