gwen's first trip to an amusement park was as a chaperone for a class of first grade students who were allowed to fill up on sugar on the bus trip to the park. by the end of the day, gwen was very frustrated and very tired. later when she revisited the amusement park, gwen could not enjoy the experience because she kept remembering how miserable she had been acting as a chaperone. gwen's satisfaction with amusement parks was adversely influenced by: