Sergio Caredda

The Marshmallow Challenge is one of the best activities to challenge a process and instil change into a team. It is, therefore, a great tool to be adopted into a Workshop that deals with Change Management. Just be wary of the fact that this workshop has been sometime abused.

Group Size

No more than 5 people per team. If the total group size is just 5 or 6 people, divide the group into teams of 3, if at all possible. Team size is more important than the total number of participants involved in the activity. 

Time Required

45 minutes or less 

5-minute introduction; 18-minute activity; 5-minute video. Additional time for discussion. The 18-minute exercise is fixed. Other times can be adjusted as needed.

Materials

Each team needs 1 yard of tape, 1 yard of string, 20 pieces of spaghetti (uncooked, of course), and one marshmallow. I also recommend making available one or two small scissors for all teams in the group to access during the activity.

Process

1. Divide attendees into teams of 3-5 members. 
2. Give each team the tape, string, spaghetti, and marshmallow. Provide each team access to scissors (it isn’t necessary for each team to have its own). 
3. Read the following instructions to all teams at the same time.
   Each team has 18 minutes to build the tallest, free-standing structure using the materials supplied to each group. The marshmallow must be attached to the top of the structure you build. After 18 minutes, I will measure the height of each structure that remains standing with the marshmallow on top. The winner is the team whose free-standing structure is the tallest. 
4. Answer any questions the teams may have and give the groups a 30-second warning. After 30 seconds, start the activity and stand back. Keep watch on the teams to ensure they are following the rules of the game. Remind them that the marshmallow must be on the top of the structure and that the structure itself must be free-standing when the activity concludes. Let them know how much time has passed until 18 minutes is up. 
5. At the end of 18 minutes, measure those structures created within the rules and that is still standing. 
6. After declaring the winner (assuming there is a structure that remains standing after the marshmallow has been attached), show the participants the video by Tom Wujec that explores the scientific research on the Marshmallow Challenge.

Follow-up

Here a number of questions that can be used to debrief the Marshmallow Challenge.

• Was there a leader on your team? Who was it and who decided who the leader would be? 
• If you had no leader, do you think having designated someone a leader would have helped? 
• If you had a leader, how did he/she do? Of the leadership practices, we have learned so far, which did your leader use? 
• How helpful was everyone on your team in challenging the process of building the tallest structure? Did anyone appear to be an expert? 
• Did any team members tune out of the activity — out of frustration with other members or for some other reason? What could you have done to keep all members of the group fully engaged? 
• Did you feel everyone’s ideas were well received during the activity? 
• How did you feel as the time limit was approaching? Did the pressure increase? If yes, was that helpful or not? 
• In retrospect, what could you have done better to enhance your ability to Challenge the Process? 
• Did you practice outsight? Where might new ideas have come from given your time constraint? 
• Did you celebrate small wins? If yes, how did you do this? 

Additional Resources

Below the official resource on how to run the Marshmallow Challenge.

Comments

Have you ever taken part or used the Marshmallow Challenge? If so, don’t hesitate to add your experience in the comment section.

Cover Photo by Rebecca Freeman on Unsplash