I wonder to what degree navigation is a fundamentally different case. A given driver on a given trip is well-shown to be more attentive to traffic and less dis

I wonder to what degree navigation is a fundamentally different case. A given driver on a given trip is well-shown to be more attentive to traffic and less disruptive if you deny them distractions. (conversation, radio, food, etc) But it seems plausible that a lost driver is a special case and may be less attentive and more disruptive to traffic if you deny them a navigational aid. Anecdotally that feels true, though I don't know if it's been studied specifically.