Geschenkgutschein: what are common causes?

The question about common causes for gift vouchers is not addressed in the provided context. Generally, gift vouchers are given for various reasons: as a practical gift when the recipient's preferences are unknown; as a last-minute present; or to allow the recipient freedom of choice. Companies also use vouchers as incentives or bonuses. However, scientific evidence on this topic is weak – it relies more on social psychology and marketing observations. Without specific data from the context, the explanatory power is limited.