We have the tendency to remember what comes first. From our first encounter, some memories deftly imprint themselves on our minds with remarkable clarity—the enduring mark of a first impression.
Becky's personality is described as smart, hardworking, pleasant, and lazy. Lynn is described as lazy, pleasant, hardworking, smart. Most people would prefer Becky over Lynn even though they possess the same personality.
As an employee, if you want your opinion packs more punch, voice it out first. Your unwary colleagues and boss will be drawn to your side.
As a boss, avoid this primacy effect by seeking opinion from random staffs, not the smartest one first.