* 社会认同:人们会更倾向于接受其他人都在做的事情。例如,如果看见其他人晚餐之后把剩饭剩菜用来堆肥,这会影响他们也去这样做<ref>{{cite journal|author=Sussman, R.|author2=Gifford, R.|name-list-style=amp|year=2013|title=Be the Change You Want to See: Modeling Food Composting in Public Places|journal=Environment & Behavior|volume=45|issue=3|pages=323–343|doi=10.1177/0013916511431274|url=https://semanticscholar.org/paper/0de18b4adf6b128027a3f4c0bc8d757426f20421}}</ref>。