Review the text Understanding Altruism: Self and Other Concerns (pp. 425 - 435) Determine whether the following behaviours are "true altruism" or "social exchange (reciprocal altruism)". In your response, identify the reward and/or cost of the helping behaviour, and also whether self-concern and other-concern (or both) played a role in the helping behaviours. Point form is appropriate here: Iris donates a litre of blood in exchange for $10. Bill stops to help an attractive woman on the highway to change a flat tire. In 2007, the UK band Radiohead decided to buck the recording industry system and offer its new album In Rainbows directly to fans at whatever price they felt like paying. Although they could have downloaded songs for free, thousands of people paid something anyway. When Sherry renews her driver's licence, she checks off the box that indicates that she is willing to donate her organs to others when she dies