Michelle was driving home from running errands with her four children when her car broke down about a mile from her house. She tried to get it to start but it just would not do anything. She tried to call her husband to come help her but received no answer. Michelle decided to walk home with her four children. After walking about half a mile in the 95-degree weather with her children Michelle could see her street in the distance. It seemed like she would never get home. It felt like she had been walking for hours. Michelle's perception of the distance to her home is being influenced by:.