There are many experts on how things have been done up to now. If you



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1.0

  Why

2.0

 When


3.0 

How


Facilitation

 Tips


References/ Sources

Plus/ 


Delta

THERE ARE MANY EXPERTS 



ON HOW THINGS HAVE BEEN 

DONE UP TO NOW. IF YOU 

THINK SOMETHING COULD 

USE A LITTLE IMPROVEMENT, 

YOU ARE THE EXPERT. ” 

|



Robert Brault



|

A collaborative presentation from over a 

dozen experienced Lean IPD practitioners. 

© 2015 Lean Construction Institute




PLUS DELTA  | 2

1.0

Why


A  primary  pillar  of  a  Lean  culture  is  continuous  improvement.  One  very  effective  way  to  strive  for  this  is  through

Retrospection

. Plus/Delta is a quick, simple retrospective to improve meetings, planning sessions, or repetitive activities.

By using Plus/Delta, teams can continuously improve meetings or activities and show respect for people by discussing

the value of or ability to improve the time spent on events. Using this practice appropriately will help develop and sus-

tain the Lean culture. Over time, participants will ideally develop a regular practice of making timely assessments and

adjustments.

Plus/Deltas are typically done in last 10 minutes of a meet-

ing or activity. Projects and organizations that really look to

maximize their learning from the practice also use it mid-way

through a longer meeting or work session. It can be particu-

larly helpful as a coaching tool when a meeting is going off-

track – it will help recalibrate the team around the meeting’s

objective and potentially help them identify a new objective.

2.0

When


The Plus/ Delta enables continuous 

improvement as a regular practice.

^



PLUS DELTA | 3

Typically, the 



facilitator

does the following.

1.  Plan 10 minutes in the agenda for the Plus/Delta. Make sure the time slot doesn’t get used up by another topic.

This is not something to be rushed and completed for the sake of completion. Attendees may at first be unwilling

to appear to criticize the meeting. They may be afraid to participate. The facilitator should expect encourager

participation until the practice becomes commonplace.

2.  Explain to the group every time what a plus/delta is.

•  Plus: what brought value and how does the team repeat it?

•  Delta: what can the team change or add to bring more value? How can the team do better? The team should

focus on the process of each particular meeting rather than focusing on people. The facilitator should be

prepared to return to emphasizing the objectives of the meeting and how to better achieve these objectives.

3.  Draw a line down the middle of a flip chart or white board, label the top with “Plus” and “Delta”

4.  Ask the team for pluses and deltas – in action phrase format. They should start their comment by stating whether

it is a Plus or a Delta.

•  Again, all comments should be discussed in action format. If someone says “There was good conversation”

as a plus, ask “What action occurred to allow that to happen?” If someone says “we had too many sidebar

conversations,” ask “What action can we take to prevent that next time?” Try to get to the root cause so the

appropriate countermeasure can be determined.

•  This may take some probing. Some teams go around the table so that everyone provides a plus and a delta,

others let the group organically respond. If the room remains quiet, wait for a few minutes. You may eventu-

ally need to call on some participants to get the exercise started.

•  Encourage both deltas and pluses. The intent is to both improve and sustain what is working well.

•  Don’t let people off the hook. Encourage all to speak up. Validate comments with the group to ensure value

to most before helping define the action.

•  Ask in terms of “Who has another plus or delta?” or “What else?” until it is time to close the session. Then

shift the question to “Is there anything else?”

•  Capture these actions on the flip chart. If an action has too many words or is not easy to write, ask the person

who said it to rephrase it in a few words. “Translating” is not recommended as often the intent is missed.

•  Ask for owners of each action, along with a commitment date. It is okay to decide not to take action.

•  At the beginning of the next meeting, review the status of the actions from the prior plus/delta.



3.0

How


^


PLUS DELTA | 4

Helpful 


facilitation

 points:


•  No “junk words” allowed. If someone says “the meeting was too long,” ask them to define “too long” or to

rephrase the statement into a recommended improvement. (For example: “We should meet for 45 minutes.”)

•  If a participant found nothing to be of value in the meeting and has no improvements to offer, ask that participant

if he really needed to attend. What action can be taken for the next meeting to ensure the right participants are

there at the right time?

•  Everything brought up is fair game. Do not discount anyone’s pluses or deltas. Discounting feedback can prevent

others from speaking up. Anything brought up that is completely off-topic should then be captured in a “Parking

Lot.”


•  Pay attention to the mood of the group. The group must be open and feel safe to speak up.

•  Ensure your application is appropriate for the environment. For very large groups (like conferences) a technical

application may be helpful. Generally, more value comes from the group discussing these together.

•  Set the goal of not having the same delta from one meeting to the next. Having the same delta means the action

was not implemented the first time.

•  This process can become stale and not add value if not facilitated as described above. There may come a time

when the team agrees the meetings are high performing and do not need a Plus/Delta. However, if the meeting

value becomes suspect, begin the practice again, perhaps in a more intentional way to bring the value back.

•  Meetings tend to become habit, the need for the meetings change with time, the length of the meeting may need

to change, or any number of factors may alter the value proposition. The Plus/Delta process can help the change

occur as needed.

3.0

How


Return to Learning Laboratory >>

^


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