A causal chain links a concept to a business outcome with reasons, one step at a time. It answers “so what?” and “why?” after every statement, until the chain reaches the objective in the question.
This lesson follows selecting a relevant fact and belongs to case analysis and evaluation.
What does a chain look like?
A chain has four parts: the concept or action, what it changes inside the business, what that does to costs or revenue, and what that means for the objective. Words such as “because”, “which means” and “so” connect them.
A weak answer gives the first and last part only: “Training improves the business.” A chain fills in the middle.
How do you build one?
- Start from a case fact, such as a problem or a planned action.
- Ask “what does this change in the process?” and write that step.
- Ask “what does that do to cost or revenue?” and use a figure if the case gives one.
- Finish at the objective named in the question.
- Read it aloud. If a step needs “somehow”, a link is missing.
Worked example
Studio Batik Aina in Kuching makes 1,000 batik pieces a month. At present 10% are faulty, and each faulty piece wastes RM15 of cloth and dye.
The owner plans a staff training course costing RM3,600, after which faults should fall to 4%. The objective is to raise profit.
Step 1, the action: staff training.
Step 2, what changes: staff handle dye and wax more skilfully, so fewer pieces are made faulty.
Step 3, numbers: before, 10% of 1,000 = 100 faulty pieces. After, 4% of 1,000 = 40 faulty pieces. That is 60 fewer.
Step 4, cost effect: 60 × RM15 = RM900 less wasted material each month.
Step 5, objective: lower waste raises profit by RM900 a month. The course cost is recovered in 3,600 ÷ 900 = 4 months.
Written as a chain:
“Training staff means fewer pieces are made faulty, which cuts waste from 100 to 40 pieces a month. At RM15 each, this saves RM900 a month, so profit rises and the RM3,600 course pays for itself in four months.”
This chain uses estimates from the case, so a careful answer adds that the fall to 4% is not certain. The cash versus profit bridge shows why the RM3,600 leaves the bank at once while the savings arrive month by month.
The mistake to watch for
A common slip is to skip straight from the concept to profit.
Mistaken answer: “Training motivates staff, so profit increases.”
The answer names a concept and an outcome but not how one produces the other. It also uses nothing from the case.
The correction is to add the middle links with case evidence: fewer faults, less wasted cloth, a saving of RM900. Each link answers “why?” for the one before.
Check yourself
Try these on paper, then open each answer.
1. Complete the missing link: “Online advertising leads to more website visits, so ___, which raises revenue.”
Show answer
A missing link is that some of the extra visitors place orders, because a visit raises revenue only when it turns into a sale. For example: “so some visitors place orders”.
2. A shop pays RM2,000 for an advert. It brings 80 extra orders, and each order adds RM30 contribution. Did the advert raise profit?
Show answer
Extra contribution: 80 × 30 = RM2,400. Subtract the cost: 2,400 − 2,000 = RM400 gain. So yes, on these figures.
3. A firm cuts its price from RM10 to RM9. Each unit costs RM6 to make, and it sells 500 units at RM10. What is the least it must sell at RM9 to earn at least the same total contribution?
Show answer
At RM10: contribution per unit is 4, and 500 × 4 = RM2,000. At RM9: contribution per unit is 3. Units needed: 2,000 ÷ 3 = 666.67, so at least 667 units. Check: 667 × 3 = 2,001 and 666 × 3 = 1,998.
Where this leads next
With a chain built, you can turn it into options in developing two conditional alternatives. The mixed practice set tests all five skills together. The ratios tool helps when a chain needs a percentage, for example a fault rate.
Students often know each concept but cannot yet explain the steps between them. That is the kind of gap our teachers work on in online one-to-one Business tuition.