Perceived quality plays a central role in product development and often determines whether a design succeeds. To fully grasp Perceived Quality, we first need to explore what “quality” itself means. Yet defining quality is notoriously challenging, and researchers have examined it from numerous perspectives.
Broadly speaking, “quality” functions both as a philosophical idea and a practical, everyday concept. It describes the characteristics of products as well as the performance of individuals, organizations, and even societies. At the same time, quality is inherently relative – its meaning shifts depending on context and the criteria used to evaluate it.
Because of this complexity, scholars have proposed many definitions and models. Different situations call for different interpretations, each with its own advantages and limitations in terms of measurement, usefulness, and relevance. For this reason, a single universal definition of quality is unlikely to exist.
A practical approach is to break quality into separate dimensions and assess each one individually. These dimensions include:
- Performance (core product characteristics)
- Features (additional enhancements)
- Reliability (likelihood of failure)
- Conformance (alignment with specifications)
- Durability (expected lifespan)
- Serviceability (ease and speed of repair)
- Aesthetics (appearance and finish)
- Perceived quality (reputation and intangible impressions).
Quality Attributes and How Perceptions Form
Building on this foundation, “quality attributes” refer to the functional and psychosocial characteristics of a product. Some attributes emerge through direct interaction and are therefore considered experience attributes. Others become apparent only over time or require expert knowledge, making them credence attributes – durability and reliability fall into this category.
Consumers form perceptions of product quality by combining intrinsic and extrinsic cues with knowledge gained from both experience and credence attributes. Personal preferences and situational factors heavily influence this process, ultimately shaping Perceived Quality.
Quality perception is both a physical and cognitive process. Sensory input typically initiates it, and human senses provide the basis for interpreting product qualities. As a result, sensory experience is fundamental to Perceived Quality.
Frameworks for Understanding Product Quality
- Garvin’s Framework of Product Quality
Garvin’s framework identifies several independent dimensions of product quality, each contributing to the overall evaluation.
However, the meaning of “perceived quality” varies across disciplines. Engineers assess Perceived Quality by examining sensory characteristics such as touch, smell, sound, taste, and visual appearance. Marketers, on the other hand, focus on psychological mechanisms shaped by brand image, reputation, and communication.
This distinction highlights a key difference from Garvin’s original definition. In his model, perceived quality is tied primarily to subjective impressions like reputation, while aesthetics refers to sensory qualities – how a product looks, feels, sounds, tastes, or smells – and depends on personal judgment.
- The Perceived Quality Framework (PQF)
Engineers often face a core question: which Perceived Quality attributes should they prioritize to maximize customer satisfaction? Closely related is the challenge of determining how to measure the importance of individual attributes or attribute groups.
Figure 1. Attributes levels of the PQF (source – research.chalmers.se)
To address this, researchers developed the Perceived Quality Framework (PQF), which organizes perceived quality attributes into a structured taxonomy. The Perceived Quality Attributes Importance Ranking (PQAIR) method supports evaluation and decision-making.
The PQF reflects an attribute-focused engineering viewpoint shaped by studies in the automotive industry, where products are highly complex. Within this framework, engineers categorize Perceived Quality attributes according to human sensory systems:
- Visual quality
- Tactile quality
- Auditory quality
- Olfactory quality
- Gustatory quality.
This structure helps designers identify relevant attributes and understand how they contribute to Total Perceived Quality (TPQ). Because the framework originated in the automotive sector, it adapts well to complex products and supports deeper analysis when necessary.
3. The PQAIR Method
The Perceived Quality Attributes Importance Ranking (PQAIR) method helps engineers assess the relative importance of different Perceived Quality attributes. It combines objective measurements with subjective customer evaluations.
Figure 2. PQAIR method analysis procedure (source – research.chalmers.se)
Contact us today to learn how LA NPDT can assist in realizing your project.
At its core, the method requires ranking all identified ground attributes by importance. These rankings may be based on:
• Internal expertise, such as expert assessments
• External data, including surveys, interviews, customer feedback systems, and large datasets
Engineers can also apply the method to specific sensory categories, helping define precise product requirements and improve Perceived Quality outcomes.
Sensory-Based Perceived Quality
In real-world settings, consumers rely heavily on sensory input when evaluating products. They often make quick judgments without conscious analysis, using visual, tactile, and auditory cues. These processes strongly influence Perceived Quality.
Color, texture, and material weight immediately shape impressions. These signals extend beyond the product itself, influencing perceptions of brand value and reinforcing judgments about Perceived Quality.
First Impressions and Sensory Signals
Human cognition prioritizes speed and efficiency, leading people to form rapid judgments based on limited information. When encountering a product, individuals interpret its visual appearance, texture, and sound almost instantly.
For example, a frosted glass bottle often appears more premium and eco-friendlier than a glossy plastic one, even if both contain the same product.
These sensory cues act as mental shortcuts and shape expectations:
• Visual appeal → shape, color, and finish define initial impressions
• Tactile experience → weight, texture, and materials signal durability and substance
• Sound cues → subtle noises, like a closing lid, suggest strength or fragility
Cognitive Biases and Decision-Making
- Early Judgments Beyond the Label
Consumers often form opinions before examining detailed information. Context strongly influences these impressions. A product displayed in a high-end boutique appears more valuable than the same item in a discount store.
While rapid judgment helps people make decisions efficiently, it also increases vulnerability to misleading cues. Design and marketing can mask poor durability or environmental impact, distorting Perceived Quality.
Perceived quality reflects not only physical characteristics but also the meanings consumers attach to them. Brand narratives, pricing strategies, and cultural expectations all shape these interpretations. This effect is especially relevant in sustainability, where visual cues often substitute for deeper evaluation.
Products that look sustainable – natural textures, muted colors, minimalist design – often lead consumers to assume genuine sustainability, even when that assumption is incorrect.
- Mental Shortcuts in Buying Decisions
Consumers simplify decisions using heuristics, such as:
• Trusting brand reputation
• Associating higher prices with better quality
• Responding to repeated marketing exposure
As a result, people often interpret higher prices as indicators of superior materials or craftsmanship, even when no such relationship exists. This creates challenges for sustainable products, which may lack premium pricing or strong marketing support.
Common interpretations include:
• High price → signals better materials, advanced features, exclusivity
• Premium packaging → suggests careful production and brand prestige
• Strong brand → implies reliability and consistent performance
• Attractive design → communicates innovation and thoughtful engineering
The Role of Packaging and Design
Packaging and product design significantly influence Perceived Quality by communicating subtle but meaningful cues. Materials, construction, and visual presentation all contribute to these impressions.
For example, simple recyclable packaging often signals responsibility and thoughtful design, while excessive plastic layers may suggest wastefulness.
Design choices also communicate expected product lifespan:
• Durable, repairable designs imply longevity
• Fragile or sealed designs imply disposability
Consumers interpret these signals – often unconsciously – and form expectations accordingly. This link between design and perceived durability is crucial in shaping Perceived Quality in sustainable consumption.
Approaches to Perceived Quality in Product Development
Several approaches to perceived quality have emerged:
• Traditional manufacturing approaches often overlook perceived quality
• Marketing approaches emphasize customer perception
• Emotional (affective) engineering focuses on subjective experience
• Robust Design and Geometrically Robust Design address engineering aspects, mainly visual quality
Figure 3. Visual robustness is a part of Appearance Conformance Quality (source – www.diva-portal.org/smash/get)
Despite these developments, researchers still lack a comprehensive engineering approach that integrates Perceived Quality, quantification, and design impact. This gap remains significant in both theory and practice.
