How does a designer make
products the right size?
Evaluation and designing
Without proper evaluation and customer feedback,
you can have a
wonderful product or invention idea that fails.
Outline the general criteria used to evaluate products.
the product meet customer needs
-- does the product meet the customer's expectations for useful life and
fredome from repairs?
ease of use--user
-- are materials durable, inexpensive, readily available
-- is the customer willing to pay the price?
Explain how the criteria used to evaluate products will vary depending on the
purpose of the evaluation. For example, crash-testing cars is done
in relation to safety only.
Apply the general criteria to
evaluate products. Explain the use of qualitative and/or quantitative tests,
models and experiments used to evaluate ideas at the design development stage
(developing chosen solution) of the design cycle.
Describe one advantage and one disadvantage of literature
search for data collection.
overwhelming amount of data can become too time consuming to evaluate
Evaluate the importance of ICT in aiding literature searching.
access to information
Describe one advantage and one disadvantage of a user trial to
“user” is a non-specialist, which makes
trials easier and cost-effective.
users may carry out tasks in different ways
from those expected and be inexperienced.
Describe one advantage and one disadvantage of user research
to collect data.
data is relatively easy and cheap to obtain
data is largely qualitative.
Compare user research with user trial.
For example, expert knowledge and advice are
gained (compared to a user trial), but the expert may be biased. It may also
be difficult to locate an expert. Data is usually qualitative.
Describe one advantage
and one disadvantage of using expert appraisal to collect data.
Specifications: Create the above table in Excel and input the
missing information using the internet and the glossary in the IB Design Tech
Deliverable: Place the
completed Excel file in the IB Design Technology folder of your student
Work Group: individuals.
How does a designer make
products the right size?
Evaluation and manufacturing
Identify the nature of evaluation at different stages of the
different types of market research, for
example, evaluating competitive products,
evaluating the success of a new product
evaluating for redesign.
In order to maximize profit, manufacturers require the most cost-effective
production system. This is often the major aim of the brief for designers.
Explain the importance of cost effectiveness to manufacturers.
Compare quality control with quality assurance for
Describe one advantage and one disadvantage of using a field
trial to collect data.
usually quite extensive exercises, so can be
tested in marketplace
data different from lab-based evaluations.
Compare price with value when assessing a product for value
price is too low:
consumers may think the product is too cheap to have much value.
generally established by demand
determined by costs of production
price may be set in relation to its competitors
may be set in accordance with the perceived value of the product.
play a part in product analysis, and they vary according to the individual,
the time (era) and the circumstances. Consumers often value utility, security,
availability, rarity and aesthetics, while designers may consider function,
reliability and ease of maintenance more important.
Explain how consumers apply criteria to evaluate a product for
value for money, referring to before purchase, purchase, initial use and
long-term use. Before purchase: advertising, manufacturer’s specification,
list price, product image, and evaluation by experts and consumer groups.
Purchase: aesthetics, performance, build quality and purchase price. Initial
use: actual performance, safety and ease of use. Long-term use: reliability,
ease of maintenance, durability and running costs.
Discuss how the criteria in 7.3.3 are assigned different
weightings depending on the design context. Value
Explain the relevance of quality assurance to consumers.
consumers do not have to carry out their own
they have a means of
redress if a product fails to match expected standards, for example, via a
Discuss the role of consumer associations for product
independent evaluation manufacturers’ claims
publish data for consumers
compare similar products within a
recommend the best value-for-money products.
Explain the contribution of the media and education to product
consumer and lifestyle programs
the weekend sections of newspapers
consumer journals, and their focus on new products
curriculum development and design education in schools
Summative Assessment: Test Objectives 1-22
Note: Items highlighted in this
are directly related to the 2009 IB Syllabus which is the set of standards for
the class. In many cases the wording has been altered, but every attempt has
been made to preserve the meaning. These objective, however, should not be
considered a substitute for the actual syllabus.