Pros and cons lists: a practical guide to better decisions

A pros-and-cons list is one of the simplest ways to make a decision less tangled. Writing down advantages and disadvantages can reveal what matters, what you are assuming and what you still need to find out.

The danger is treating the list as a vote. Six minor advantages do not necessarily outweigh one serious disadvantage. A useful list examines the importance, likelihood and timing of consequences, not just how many lines appear in each column.

This guide shows how to build a better pros-and-cons list for workplace and career decisions, with a fictional example, prompts for uncertainty and a practical way to reach a next step.

What is a pros-and-cons list?

A basic list records likely benefits and drawbacks of an option. "Pros" are reasons in favour; "cons" are reasons against. A more careful version makes the alternative explicit and identifies who experiences each consequence.

For example, "Introduce a four-day working pattern" is incomplete as a decision question. Which pattern, for whom, with what hours, and compared with what? Compressing the same hours into four days is different from reducing working hours. Both differ from allowing a flexible day occasionally.

The broader concept of a decisional balance sheet appears in decision-making and behaviour-change literature. Research using pros and cons in behaviour change does not establish that a simple list reliably selects the best workplace decision. There is also no need to claim a single inventor for the everyday two-column list.

Treat it as a thinking aid, not a formula for certainty.

When is a list useful?

Use one when the options are reasonably clear but competing consequences are difficult to hold in your head. It can help with taking a new role, changing a work pattern, choosing whether to pilot a process or deciding how to deliver a project.

A list is often a good first step before a more structured tool. If you have several options and clear comparison criteria, a decision matrix may be more useful. If you need new possibilities, try SCAMPER.

For high-stakes legal, financial, safeguarding or health decisions, use the appropriate specialist advice and formal process. Listing a statutory requirement as one minor "con" is not an adequate assessment.

The list also works poorly if the actual problem is unclear. Before weighing solutions, check whether you need to investigate causes using the 5 Whys.

Step 1: define the decision and the alternative

Write a precise question, with a timeframe. For example: "Should our team trial a shared morning planning meeting for six weeks instead of the current email update?"

Name the alternatives, including staying with the current arrangement. The status quo has consequences too. It should not receive a free pass because it feels familiar.

Also ask whether the apparent choice is a false binary. You might test a shorter meeting twice a week, improve the email format or use a shared board. A list that compares only "meeting" with "no meeting" can miss a better third option.

Identify who decides and who is affected. A manager's preference is not the only relevant perspective if the change alters colleagues' working arrangements.

Step 2: identify non-negotiable conditions

Before listing trade-offs, identify conditions that every acceptable option must meet. These might include required staffing cover, agreed contractual arrangements, confidentiality or accessibility.

Do not score these away. If an option fails a mandatory requirement, revise it or remove it from consideration until the issue is resolved.

Separate genuine constraints from habits. "We have always held a meeting at nine" is not necessarily a non-negotiable condition. "We need a clear owner for urgent customer issues at opening time" describes a functional requirement that several approaches might meet.

This distinction often improves the decision before the list itself begins.

Step 3: list consequences, not slogans

Make each point specific enough to investigate. "Better communication" is vague. "Everyone can hear urgent changes before starting customer calls" describes a potential mechanism.

Write drawbacks with the same care. "Waste of time" is a judgement. "A daily fifteen-minute meeting could interrupt colleagues whose shift starts earlier" identifies a possible consequence.

Avoid duplicating points. "Faster updates", "quicker communication" and "less time sending messages" may all describe one benefit. Keep them together unless they represent genuinely different effects.

Include what might be lost. A live meeting may reduce written duplication but create a need for a record that absent colleagues can access. An apparent advantage can have a dependency attached to it.

Step 4: consider importance, likelihood and timing

For each point, ask three questions: How much would it matter? How likely does it seem, given the evidence? When would it happen?

You do not need invented probabilities. If the evidence is weak, write "uncertain" and identify what would help you judge. A brief pilot or a conversation with affected colleagues may be enough for an ordinary workplace choice.

Distinguish temporary implementation costs from ongoing consequences. Learning a new process may take time initially but become easier. Losing necessary shift cover may remain a problem every week.

Also consider reversibility. A small pilot can be stopped or adjusted. A long contract or a major career move may have greater switching costs. Reversibility changes what level of evidence is sensible before proceeding.

A fictional worked example

A team is considering the six-week morning planning meeting described above. They create a list that includes evidence questions instead of pretending that every consequence is known.

The list contains three pros and three cons, but the count tells us nothing decisive. Some drawbacks may be mitigated; some benefits remain unproven.

The team decides not to introduce the daily meeting immediately. Instead, they test a ten-minute session twice a week, keep a brief written update and agree that customer cover takes priority. They will review missed updates, repetition and colleagues' experience.

This is a fictional illustration, not evidence that meetings are better than email. The point is how the list exposes conditions and leads to a proportionate test.

Should you score the pros and cons?

You can give consequences a simple importance rating to prompt discussion, but be careful about adding everything into a single total.

A score of 5 for one benefit and 5 for another does not necessarily mean they are comparable or independent. Similarly, assigning a large number to a serious risk does not turn the exercise into a professional risk assessment.

If you do use numbers, define the scale before scoring and explain the assumptions. Check for duplicated consequences and distinguish importance from probability. Preserve a written explanation alongside any total.

For multiple options, a weighted decision matrix usually gives a clearer structure because each option is compared against the same criteria. Even then, the result remains sensitive to judgement and evidence.

Use disagreement to improve the list

When someone challenges a point, ask what they believe is missing or overstated. A colleague may see a burden that the decision owner does not experience.

Try gathering initial input independently before discussing it. This helps reduce the chance that the first confident speaker frames every later contribution.

Use Six Thinking Hats if the conversation mixes evidence, reactions and criticism in a way that becomes difficult to follow. The white hat can clarify information; yellow and black can separate potential benefits and cautions; red can acknowledge reactions without treating them as proof.

Do not interpret discomfort as resistance to be eliminated. It may signal a practical issue, a previous negative experience or an unresolved question.

Applying the method to a career decision

Suppose you are considering a new job. Compare the specific offer with your current situation and any realistic alternatives, not with an imagined perfect role.

Potential benefits might include development opportunities, a shorter commute or work that better matches your interests. Potential drawbacks might include uncertain support, a probation period or less flexibility.

Ask what you can verify. What does development actually involve? Who would manage you? What are the agreed hours and location? Which promises appear in the written offer, and which remain informal?

Separate other people's expectations from your own priorities. A prestigious title may matter less to you than predictable hours. Conversely, a short-term inconvenience may be acceptable if the role offers a credible route towards a goal you value.

The list should help you prepare questions, not pressure you to ignore uncertainty or make a decision before you have essential information.

Common mistakes to avoid

Counting entries is the obvious mistake, but confirmation bias is often more subtle. You may describe your preferred option generously and its alternative harshly. Use similar standards of evidence and wording for both.

Watch for sunk costs: time or money already spent may not be recoverable, so the relevant question is what the future options would mean. Past investment can still matter if it affects switching costs, obligations or resources, but it is not by itself a reason to continue.

Do not exclude the consequences of delaying a decision. Waiting can be sensible when useful evidence is forthcoming; it can also allow a known problem to continue. State what you are waiting for and when you will decide.

Finally, avoid endless list-building. Set a decision date appropriate to the stakes and identify the few unresolved questions that could genuinely change the choice.

Close with a decision record and reflection

Record what you chose, why, which trade-offs you accepted and what would make you reconsider. Add an owner and review point for workplace actions.

Afterwards, ask whether the expected consequences occurred and which assumptions were wrong. That review is where a simple list can become a learning habit rather than a one-off exercise.

For a wider choice of methods, return to the ten problem-solving and decision-making techniques. If your challenge is strategic rather than a discrete choice, the SWOT/TOWS guide can help connect the decision to internal capabilities and external conditions.

Sources and further reading

• Research on decisional balance in smoking cessation, 1985
• Open-access research using a decisional balance exercise in behaviour change

These studies concern particular behaviour-change settings, not proof that an unweighted workplace list selects the best option. The workplace examples and steps in this guide are practical suggestions for making trade-offs easier to examine.