Final answer:
One reason societal attitudes toward bullying are changing, according to the bystander effect, is that people are realizing that bullying has long-term effects on society.
Step-by-step explanation:
According to the bystander effect, one reason societal attitudes toward bullying are changing is that people are realizing that bullying has long-term effects on society. The bystander effect is a phenomenon in which witnesses or bystanders do not intervene to help a victim or person in distress. This lack of intervention can lead to the perpetuation of bullying and its negative consequences. Understanding the long-term effects of bullying has made people more aware of the need to change societal attitudes and take action to prevent and address bullying.