Australian National University · FACULTY OF MANAGEMENT

MGMT8015 Chap.6 Diffusion of Innovation and Adopter Categories

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Chapter 6 of 14 · MGMT8015

Diffusion of Innovation and Adopter Categories

How adoption spreads

Rogers’s diffusion of innovation describes how a new product spreads through a social system over time. Cumulative adoption follows an S-curve: slow at first, steep in the middle and flat near saturation.

Who adopts when

Five categories, from innovators to laggards, describe the sequence of uptake.

Each group needs the product to be more practical, affordable and supported than the group before it did.

Why it matters

The curve explains why early enthusiasm can mislead founders, and how a disruptive product spreads from its first users to the majority.

Reading a case

When you place a product on the curve, look for the conditions that brought each new group in: price, practicality, infrastructure, support and public policy.

In the electric-vehicle case those conditions, not the core idea of an electric car, explain the move from enthusiasts to the early majority.

In this chapter

What this chapter covers

  • 01

    The diffusion S-curve

  • 02

    Innovators to laggards

  • 03

    The electric-vehicle case in three stages

  • 04

    Conditions that move adoption along

  • 05

    Early adopters and false positives

  • 06

    Diffusion and disruption

  • 07

    Reading what moves each group to adopt

Worked example · free

Read a meal-delivery locker scheme against the S-curve

Q [4 marks]. AskSia-authored practice. A city’s food-delivery lockers were used in year 1 mainly by technology hobbyists who tolerated a buggy app. In year 2 the operator cut fees and partnered with supermarkets. In year 3, shift workers with no interest in technology began using them daily. Place each year on the curve and say what the operator should prioritise now. The marks shown are an AskSia study allocation, not an official University marking scheme.
The diffusion S-curve.The diffusion S-curve. The line shows the cumulative share of a market that has adopted over time, flat at the start, steepest in the middle and levelling off near full adoption; the five adopter groups are named in the order they come on board.allnonetimecumulative adoptersInnovatorsEarly adoptersEarly majorityLate majorityLaggards
The diffusion S-curve. The line shows the cumulative share of a market that has adopted over time, flat at the start, steepest in the middle and levelling off near full adoption; the five adopter groups are named in the order they come on board.
  • 1Year 1: hobbyists tolerating flaws are innovators, at the flat start of the curve.
  • 1Year 2: lower fees and supermarket partners lower barriers and attract early adopters.
  • 1Year 3: everyday users with no interest in the technology signal the early majority.
  • 1Priority: the steep middle is starting, so reliability and capacity matter more than new features.
Year 1 sits with innovators, year 2 with early adopters and year 3 marks the arrival of the early majority, so the operator should invest in reliability and capacity for the steep part of the curve.
Sia tip — Place a group on the curve by why it adopts, novelty or practicality, not by how many people it contains.
Glossary

Key terms

Diffusion of Innovation
Rogers’s model of how a new product or practice spreads through a social system over time along an S-curve.
Early Adopters
The second adopter category, who take up an innovation early and help it reach the wider market.
Early Majority
The adopter category that joins once a product is practical and proven, marking the steep middle of the curve.
Laggards
The final adopter category, who take up an innovation last, if they adopt it at all.
FAQ

Diffusion of Innovation and Adopter Categories FAQ

What does the S-curve in diffusion of innovation show?

It plots the cumulative number of adopters against time. Adoption starts slowly among a few enthusiasts, accelerates as the majority joins and levels off as few non-adopters remain. The Week 12 summary also links the curve to innovation portfolio management, since products at different points need different investment.

How did electric vehicles move through the adopter categories?

The lecture describes three stages: technology enthusiasts and environmental advocates buying expensive early models until about 2012; early adopters drawn by practical models and government incentives from about 2012 to 2018; and the early majority since then, as battery costs fell and charging networks grew.

Why can early adopters mislead a founder?

Early adopters buy for novelty and accept flaws that mainstream customers will not. Their enthusiasm says little about whether the majority will adopt, so treating it as proof of demand and scaling on it is the false-positive pattern from the Week 3 lecture.

What are the five adopter categories?

In order of uptake they are innovators, early adopters, the early majority, the late majority and laggards. The Week 12 summary lists them as the sequence in which a market takes up an innovation, from the first enthusiasts to the last people to switch.

How is the diffusion S-curve different from a technology S-curve?

The diffusion curve counts adopters over time. The technology curve in Week 4 plots performance improvement over time and shows a newer technology overtaking an older one after a fermentation era. Both are S-shaped, so label the vertical axis whenever you draw either one.

Study strategy

Exam move

Sketch the S-curve and label the five categories in order. Choose a product you know and write one sentence on what had to change for each new group to adopt it. Finish by naming the group your own venture idea would reach first. For your business model, name the first group you would target and the evidence that would show the next group is ready. Link this to the false-positive pattern before you size your market.

Working through Diffusion of Innovation and Adopter Categories in MGMT8015? Sia is AskSia’s AI Management tutor — ask any MGMT8015 Diffusion of Innovation and Adopter Categories question and get a clear, step-by-step explanation grounded in how MGMT8015 is taught and assessed. Read this chapter free, then take your hardest questions to Sia.

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