Leekam, Susan R.Believing and deceiving: Steps to becoming a good liar(англ.). Lawrence Erlbaum Associates, Inc.. — Children's developing success as liars may be related to their developing understanding of another person's belief / a conceptual framework in which lying can be considered at different levels or degrees of complexity / levels of lying [level 1: manipulating behavior, level 2: manipulating belief, level 3: manipulating belief about intentions].