Witnessing change: Dynamic norms help resolve diverse barriers to personal change

Recent research has found that dynamic norms—information about collective change in behavior—can promote meaningful personal behavior change, even if that behavior is not currently the norm. Through what psychological processes do dynamic norms operate? We theorized that, when others change, it can lead observers to infer that whatever factors had loomed large as barriers to change do not, in fact, prevent change. If so, dynamic norms may alter...