A way of identifying behavioral problems that may be amenable to a nudge intervention is given by the Danish organization iNudgeyou, which use the BASIC model to design interventions. The acronym stands for: B = behavioral mapping: collecting data to define the problem – the what phase. A = analysis: why people are currently behaving as they are – the why phase. S = solution mapping: this is the scientific and systematic process of making suggestions – the how phase. I = interventions – this is the testing of possible nudge solutions before full implementation – this is the test phase. Once a nudge intervention has been selected, there is then C = Continuation: solutions may fail due to poor implementation or lack of maintenance, so a process of on-going monitoring of the success of behavior change is needed, as well as an evaluation of possible unforeseen side-effects – the results stage. An approach such as BASIC is needed whenever nudging is being considered – jumping from general knowledge to specific behavioral problems is fraught with problems.