Units of measure used in displaying information, data, etc matters a lot and impact choices made on a number of different dimensions:
- anchoring: if you present data in terms of 1 000 milli-something or 1 something, than you use different anchors
- priming: units matter here as well in the same terms. Ex.: steps walked versus kilometers for health habits, bottles or bins for waste recycling, etc.
- vividness: if you use an abstract measure, your messaging will be less impactful. Ex.: targeting recycling 1kg of plastic a week versus 10 plastic bottles a week