Q2 - According to Hall (2015), there are several factors the court takes into consideration when evaluating if the search was truly voluntary; 1) Suspects knowledge of the right to refuse; 2) Age, intelligence and language skill of the suspect; 3) Degree of cooperation by the suspect; 4) Length of detention; 5) Suspects attitude about the likelihood of discovery during the search; 6) Nature of the detention and questioning by police and whether the suspect was intimidated or coerced by the officer statements.
As far as lying goes, this is a slippery slope. The courts are all over the place on this as to the degree or “totality of the circumstances” as to what is permissible. An example is Contreras-Ceballos v. U.S. (1993); state and federal