MGMT 4400 Week 8 Social Proof Influence Memo Example

Memorandum

To: Owners, Brennan Family Kitchens

From: Operations Associate

Date: October 13, 2026

Re: What the tablet rollout at the bistro teaches about introducing the next change

The Puzzle

In April you sent a written instruction to all staff at the Overland Park bistro to take orders on the new handheld tablets instead of paper pads. For a month almost no one did. Servers kept writing orders by hand and keying them in at the terminal. Then, in late May, Darlene, the most senior server at the bistro, who had transferred from the flagship diner, carried a tablet for a week on her own initiative. Her section turned tables noticeably faster, since orders reached the kitchen the moment she entered them. Within three weeks, nearly every server was using a tablet. Nothing in the instruction changed. This memo explains why the same change failed by order and succeeded by example, because the lesson applies to the central prep kitchen you are planning.

Six Principles, One Chosen

Cialdini (2009) described six principles that raise the odds that someone will say yes when asked: reciprocity, commitment and consistency, social proof, authority, liking and scarcity. The one that fits these facts is social proof: when people are uncertain how to act, they look to what others like them are doing, especially others they see as similar or competent. Servers were uncertain whether the tablets would slow them down on a busy night, and no one wanted to be the first to find out in front of a full section. Darlene's week answered the question with evidence from someone whose judgment they trusted.

Rivals Tested in Order

Authority should have worked if it were the relevant principle, since the instruction came from the owners, and it did not. That suggests authority alone was not enough under uncertainty. Liking may have played a part, since Darlene is well liked, but servers who do not get along with her adopted the tablets too, which points to the evidence of her faster table turns rather than affection. Reciprocity, commitment and scarcity have no clear role: no one owed Darlene a favor, no one had committed in advance to the tablets and there was no shortage involved. Social proof explains both the month of resistance, when no peer had shown the tablets working, and the rapid spread afterward, once one had.

What the Faster Tables Added

The principle alone would predict some spread, but the speed of adoption suggests that the visible result mattered as much as the example. Servers could see Darlene's section turning faster and could connect it to the tablet. Robbins and Judge (2019) note that people adopt new practices more readily when the benefits are observable, and here they were observable on the floor every night.

Implications for the Central Prep Kitchen

The central prep kitchen will face the same uncertainty. Line cooks at the bistro do not yet know whether centrally prepared sauces and stocks will hold up on the line. A written announcement is unlikely to settle that. Instead, I recommend asking one respected cook at the bistro to trial the central kitchen's products for two weeks on a single station, with results shared openly, before the change is rolled out. If the products work, the trial will do more than any instruction; if they do not, you will learn that before committing all four restaurants. Piderit (2000) argues that resistance often reflects genuine uncertainty that people need resolved, and a trusted peer's trial resolves it with evidence.

References

Cialdini, R. B. (2009). Influence: Science and practice (5th ed.). Pearson.

Piderit, S. K. (2000). Rethinking resistance and recognizing ambivalence: A multidimensional view of attitudes toward an organizational change. Academy of Management Review, 25(4), 783-794. https://doi.org/10.5465/amr.2000.3707722

Robbins, S. P., & Judge, T. A. (2019). Organizational behavior (18th ed.). Pearson.